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| {{Infobox_Disease
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| | Name = {{PAGENAME}}
| | {{Endometriosis}} |
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| | Caption =
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| | DiseasesDB = 4269
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| | ICD10 = {{ICD10|N|80||n|80}}
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| | ICD9 = {{ICD9|617.0}}
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| | ICDO =
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| | OMIM = 131200
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| | MedlinePlus = 000915
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| | eMedicineSubj = med
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| | eMedicineTopic = 3419
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| | eMedicine_mult = {{eMedicine2|ped|677}} {{eMedicine2|emerg|165}}
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| | MeshID = D004715
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| }} | |
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| {{CMG}} | | {{CMG}}; {{AE}} {{AKI}} |
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| {{Editor help}} | | {{SK}} Endometrioma, Chocolate cyst of the ovary, Endometrosis |
| | ==[[Endometriosis overview|Overview]]== |
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| | ==[[Endometriosis historical perspective|Historical Perspective]]== |
| '''Endometriosis''' is a common medical condition characterized by growth of the [[endometrium]], the tissue that lines the [[uterus]], beyond or outside the uterus.
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| Affecting an estimated 89 million women (usually around 30 to 40 years of age who have never been pregnant before) of reproductive age around the world, one in every 5 females get endometriosis.[http://womenshealth.about.com/cs/endometriosis/a/endotreatdiagsu.htm] . However, endometriosis can occur very rarely in postmenopausal women. <ref name="AMN" /> An estimated 2%-4% of endometriosis cases are diagnosed in the postmenopausal period.
| | ==[[Endometriosis classification|Classification]]== |
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| In endometriosis, the [[endometrium]] (from ''endo'', "inside", and ''metra'', "[[womb]]") is found to be growing outside the uterus, on or in other areas of the body. Normally, the endometrium is shed each month during the menstrual cycle; however, in endometriosis, the misplaced endometrium is usually unable to exit the body. The endometriotic tissues still detach and bleed, but the result is far different: internal bleeding, degenerated blood and tissue shedding, inflammation of the surrounding areas, pain, and formation of [[scar]] tissue may result. In addition, depending on the location of the growths, interference with the normal function of the [[bowel]], [[Urinary bladder|bladder]], [[small intestines]] and other organs within the [[pelvic cavity]] can occur. In very rare cases, endometriosis has also been found in the [[skin]], the [[lungs]], the [[eye]], the [[Thoracic diaphragm|diaphragm]], and the [[brain]].
| | ==[[Endometriosis pathophysiology|Pathophysiology]]== |
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| == Symptoms == | | ==[[Endometriosis causes|Causes]]== |
| A major symptom of endometriosis is severe recurring pain. The amount of pain a woman feels is not necessarily related to the extent or stage (1 through 4) of endometriosis. Some women will have little or no pain despite having extensive endometriosis affecting large areas or having endometriosis with scarring. On the other hand, women may have severe pain even though they have only a few small areas of endometriosis.
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| Symptoms of endometriosis can include (but are not limited to):
| | ==[[Endometriosis differential diagnosis|Differentiating Endometriosis from other Diseases]]== |
| * Painful, sometimes disabling menstrual cramps ([[dysmenorrhea]]); pain may get worse over time (progressive pain)
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| * [[Chronic pain]] (typically lower back pain and pelvic pain, also abdominal)
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| * Painful sex ([[dyspareunia]])
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| * Painful bowel movements (dyschezia) or painful urination ([[dysuria]])
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| * Heavy menstrual periods ([[menorrhagia]])
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| * Nausea and vomiting
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| * Premenstrual or intermenstrual spotting (bleeding between periods)
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| * [[Infertility]] and subfertility. Endometriosis may lead to [[fallopian tube obstruction]]. Even without this, there may be difficulty conceiving. In some women, subfertility is the sole symptom, and the endometriosis is only discovered after fertility investigations.
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| * Bowel obstruction (possibly including vomiting, crampy pain, diarrhea, a rigid and tender abdomen, and distention of the abdomen, depending on where the blockage is and what is causing it) or complete urinary retention.
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| In addition, women who are diagnosed with endometriosis may have gastrointestinal symptoms that may mimic [[irritable bowel syndrome]], as well as fatigue.
| | ==[[Endometriosis epidemiology and demographics|Epidemiology and Demographics]]== |
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| Patients who rupture an endometriotic cyst may present with an [[acute abdomen]] as a [[medical emergency]]. Endometriotic cysts in the [[thoracic cavity]] may cause some form of thoracic endometriosis syndrome, most often [[catamenial pneumothorax]].
| | ==[[Endometriosis risk factors|Risk Factors]]== |
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| == Epidemiology == | | ==[[Endometriosis screening|Screening]]== |
| Endometriosis can affect any woman, from [[menarche|premenarche]] to [[menopause|postmenopause]], regardless of her race, ethnicity or whether or not she has had children. Endometriosis often persists after [[menopause]]. Endometriosis in postmenopausal women is an extremely aggressive form of this disease characterized by complete progesterone resistance and extraordinarily high levels of aromatase expression. <ref name=Medscape>{{cite web | Serdar E. Bulun, M.D., Hironobu Sasano, M.D. and Evan R. Simpson, Ph.D. | title =Aromatase Expression in Postmenopausal Endometriosis | publisher=Medscape | work = Aromatase in Aging Women | url=http://www.medscape.com/viewarticle/417903_6 | year = 1999 | accessdate=2007-9-23}}</ref> A majority of 50 postmenopausal women diagnosed with endometriosis had no previous history of the disease. In less common cases, girls may have endometriosis before they even reach menarche.<ref>{{cite journal | author=Batt RE | coauthors=Mitwally MF | date=2003-12-01 | title=Endometriosis from thelarche to midteens: pathogenesis and prognosis, prevention and pedagogy | journal=Journal of pediatric and adolescent gynecology | volume=16 | issue=6 | pages=337–47 | id=PMID 14642954 | url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=14642954&dopt=Abstract | accessdate=2006-04-15}}</ref><ref>{{cite journal | author=Marsh EE | coauthors=Laufer MR | date=2005-03-01 | title=Endometriosis in premenarcheal girls who do not have an associated obstructive anomaly | journal=Fertility and sterility | volume=83 | issue=3 | pages=758–60 | id=PMID 15749511 | url=http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15749511&dopt=Abstract | accessdate=2006-04-15}}</ref>
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| Current estimates place the number of women with endometriosis at between 5% and 20% of women of reproductive age. About 30% to 40% of women with endometriosis are infertile, making it one of the leading causes of infertility. However, endometriosis-related infertility is often treated successfully with surgical destruction of the disease. Some women do not find out that they have endometriosis until they have trouble getting pregnant. While the presence of extensive endometriosis distorts pelvic anatomy and thus explains [[infertility]], the relationship between early or mild endometriosis and infertility is less clear. The relationship between endometriosis and infertility is an active area of research.
| | ==[[Endometriosis natural history, complications and prognosis|Natural History, Complications and Prognosis]]== |
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| Early endometriosis typically occurs on the surfaces of organs in the pelvic and intraabdominal areas. Health care providers may call areas of endometriosis by different names, such as implants, lesions, or nodules. Larger lesions may be seen within the ovaries as ''endometriomas'' or chocolate cysts (They are termed chocolate because they contain a thick brownish fluid, mostly old blood). Endometriosis may trigger inflammatory responses leading to scar formation and [[Adhesion (medicine)|adhesions]].
| | ==Diagnosis== |
| Most endometriosis is found on structures in the [[pelvic cavity]]:
| | [[Endometriosis history and symptoms|History and Symptoms]] | [[Endometriosis physical examination|Physical Examination]] | [[Endometriosis laboratory findings|Laboratory Findings]] | [[Endometriosis electrocardiogram|Electrocardiogram]] | [[Endometriosis chest x ray|Chest X Ray]] | [[Endometriosis CT|CT]] | [[Endometriosis MRI|MRI]] | [[Endometriosis echocardiography or ultrasound|Echocardiography or Ultrasound]] | [[Endometriosis other imaging findings|Other Imaging Findings]] | [[Endometriosis other diagnostic studies|Other Diagnostic Studies]] |
| * [[Ovary|Ovaries]]
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| * [[Fallopian tube]]s
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| * The back of the [[uterus]] and the posterior culdesac
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| * The front of the uterus and the anterior culdesac
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| * Uterine [[ligament]]s such as the broad or round ligament of the uterus
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| * [[Intestine]]s, particularly the [[vermiform appendix|appendix]]
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| * [[Urinary bladder]]
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| Endometriosis may spread to the [[cervix]] and [[vagina]] or to sites of a surgical abdominal incision. | | ==Treatment== |
| In extremely rare cases, endometriosis areas can grow in the [[lungs]] or other parts of the body.
| | [[Endometriosis medical therapy|Medical Therapy]] | [[Endometriosis surgery|Surgery]] | [[Endometriosis primary prevention|Primary Prevention]] | [[Endometriosis secondary prevention|Secondary Prevention]] | [[Endometriosis cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Endometriosis future or investigational therapies|Future or Investigational Therapies]] |
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| Surgically, endometriosis can be staged I-IV (Revised Classification of the [[American Society of Reproductive Medicine]]).
| | ==Case Studies== |
| | [[Type page name here case study one|Case #1]] |
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| == Causes ==
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| While the exact cause of endometriosis remains unknown, many theories have been presented to better understand and explain its development. These concepts do not necessarily exclude each other.
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| # Endometriosis is a condition caused by excess [[estrogen]] created each month in the female body, and is seen primarily during the reproductive years. In experimental models, excess estrogen is necessary to induce or maintain endometriosis. Medical therapy is often aimed at lowering estrogen levels to control the disease. It is hypothesized that excess estrogen levels may be measured by a female taking her morning temperature (with a thermometer showing a tenth decimal) at the same time each day for a month or two. To learn more about taking your waking temperature, please see the book: "Taking Charge of Your Fertility" by Toni Weschler, MPH. A normal woman's body temperature varies from 98.5 to 97.5 degrees Fahrenheit (36.9 to 36.3 degrees Celsius), however it is hypothesized that someone with endometriosis may see temperatures of 98.5 to 97.0 °F (36.9 to 36.1 °C). The lower temperatures signify the estrogen phase of a normal female's cycle, therefore it is logical that women with excessively lower body temperatures, may have an excess of estrogen, thus endometriosis. Research is needed to determine the reliability of using waking temperatures to diagnose endometriosis and its severity. Additionally, the current research into Aromatase, an estrogen-synthesizing enzyme produced by the implants themselves, has provided evidence as to why and how the disease persists after menopause and hysterectomy.
| | [[Category:Projects]] |
| # "Retrograde menstruation", in which some of the menstrual debris of menstruation flows into the pelvis, may play an important role (John A. Sampson). While most women may have some retrograde menstrual flow, typically their immune system is able to clear the debris and prevent implantation and growth of cells from this occurrence. However, in some patients, endometrial tissue transplanted by retrograde menstruation is able to implant and establish itself as endometriosis. Factors that might cause the tissue to grow in some women, but not in others, need to be studied, and some of the possible causes below may provide some explanation, e.g. hereditary factors, toxins, or a compromised immune system. It can be argued that the uninterrupted occurrence of regular menstruation month after month for decades, is a modern phenomenon, as in the past women had more frequent menstrual rest due to pregnancy and lactation.
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| # A competing theory suggests that endometriosis does not represent transplanted endometrium but starts ''de novo'' from local [[stem cells]]. This process has been referred to as coelomic [[metaplasia]]. Triggers of various kind (including [[menses]], toxins, or immune factors) may be necessary to start this process.
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| # Hereditary factors play a role. It is well recognized that daughters or sisters of patients with endometriosis are at higher risk of developing endometriosis themselves. A recent study (2005) published in the ''American Journal of Human Genetics'' found a link between endometriosis and chromosome 10q26.<ref>Treloar SA, Wicks J, Nyholt DR, Montgomery GW, Bahlo M, Smith V, Dawson G, Mackay IJ, Weeks DE, Bennett ST, Carey A, Ewen-White KR, Duffy DL, O'connor DT, Barlow DH, Martin NG, Kennedy SH. Genomewide linkage study in 1,176 affected sister pair families identifies a significant susceptibility locus for endometriosis on chromosome 10q26. Am J Hum Genet. 2005 Sep;77(3):365-76. Epub 2005 Jul 21. PMID 16080113. [http://www.medicine.ox.ac.uk/ndog/oxegene/Papers/ASHG%20%282005%29.pdf Full Text].</ref> One study found that, in female siblings of patients with endometriosis the [[relative risk]] of endometriosis is 5.7:1 versus a control population.<ref>Kashima K, Ishimaru T, Okamura H, Suginami H, Ikuma K, Murakami T, Iwashita M, Tanaka K. Familial risk among Japanese patients with endometriosis. Int J Gynaecol Obstet. 2004 Jan;84(1):61-4. PMID 14698831</ref>
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| # It is accepted that in specific patients endometriosis can spread directly. Thus endometriosis has been found in abdominal [[incision]]al scars after surgery for endometriosis.
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| # On rare occasions endometriosis may be transplanted by [[blood]] or by the [[lymphatic system]] into peripheral organs (e.g. [[lungs]], [[brain]]).
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| # Recent research is focusing on the possibility that the [[immune system]] may not be able to cope with the cyclic onslaught of retrograde menstrual fluid. In this context there is interest in studying the relationship of endometriosis to [[autoimmune disease]], [[allergy|allergic]] reactions, and the impact of [[toxins]].<ref>Capellino S, Montagna P, Villaggio B, Sulli A, Soldano S, Ferrero S, Remorgida V, Cutolo M. Role of estrogens in inflammatory response: expression of estrogen receptors in peritoneal fluid macrophages from endometriosis. Ann N Y Acad Sci. 2006 Jun;1069:263-7. PMID 16855153</ref>
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| Another area of research is the search for endometriosis markers. These markers are substances made by or in response to endometriosis that health care providers can measure in the blood, urine, or daily waking temperature. If markers are found, health care providers could diagnose endometriosis by testing a woman's blood, urine, or daily waking temperature, which might reduce the need for surgery. [[CA-125]] is known to be elevated in many patients with endometriosis,<ref>{{cite journal |author=do Amaral V, Ferriani R, de Sá M, Nogueira A, e Silva J, e Silva A, de Moura M |title=Positive correlation between serum and peritoneal fluid CA-125 levels in women with pelvic endometriosis |journal=Sao Paulo Med J |volume=124 |issue=4 |pages=223-7 |year=2006 |pmid=17086305}}</ref> but not specifically indicative of endometriosis.
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| == Diagnosis ==
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| A health history and a physical examination can in many patients lead the physician to suspect the diagnosis.
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| Use of imaging tests may identify larger endometriotic areas, such as nodules or endometriotic cysts. The two most common imaging tests are [[ultrasound]] and [[magnetic resonance imaging]] (MRI). Normal results on these tests ''do not'' eliminate the possibility of endometriosis--areas of endometriosis are often too small to be seen by these tests.
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| The only sure way to confirm an endometriosis diagnosis is by [[laparoscopy]]. The diagnosis is based on the characteristic appearance of the disease, if necessary corroborated by a [[biopsy]]. Laparoscopy also allows for surgical treatment of endometriosis.
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| Generally, endometriosis-directed drug therapy (other than the oral contraceptive pill) is utilized after a confirmed surgical diagnosis of endometriosis.
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| == Cause of pain ==
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| The way endometriosis causes pain is the topic of much research. Because many women with endometriosis feel pain during or related to their periods and may spill further menstrual flow into the pelvis with each menstruation, some researchers are trying to reduce menstrual events in patients with endometriosis.
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| Endometrial tissue reacts to hormonal stimulation and may "bleed" at the time of menstruation. It accumulates locally, causes swelling, and triggers inflammatory responses with activation of [[cytokines]]. It is thought that this process may lead to pain perception.
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| Endometriosis is thought to be an auto-immune condition and if the immune system is compromised with a food intolerance, then removing that food from the diet can, in some people, have an effect. Common intolerances in people with endometriosis are wheat and dairy. <ref> Dian Mills & Michael Vernon. "Endometriosis A Key to Healing and Fertility through Nutrition"</ref>
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| == Treatments ==
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| Currently, there is no cure for endometriosis, though in some patients menopause (natural or surgical) will abate the process. Nevertheless, a hysterectomy and/or removal of the ovaries will not guarantee that the endometriosis areas and/or the symptoms of endometriosis will not come back. Conservative treatments usually try to address pain or infertility issues. Medical herbal treatments can sometimes be effective in controlling the disease.
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| The treatments for endometriosis pain include:
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| * [[NSAID]]s and other pain medication: They often work quite well as they not only reduce pain but also menstrual flow. They are commonly used in conjunction with other therapy. For more severe cases narcotic prescription drugs may be used.
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| *[[GnRH agonist|Gonadotropin Releasing Hormone (GnRH) Agonist]]: These agents work by increasing the levels of GnRH. Consistent stimulation of the GnRH receptors results in downregulation. This causes a decrease in FSH and LH, thereby decreasing estrogen and progesterone levels.
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| * It is suggested but unproven that pregnancy and childbirth can stop endometriosis.
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| * Hormone suppression therapy: This approach tries to reduce or eliminate menstrual flow and estrogen support. Typically, it needs to be done for several months or even years.
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| ** [[Progesterone]] or [[Progestins]]: Progesterone counteracts estrogen and inhibits the growth of the endometrium. Such therapy can reduce or eliminate menstruation in a controlled and reversible fashion. Progestins are chemical variants of natural progesterone.
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| ** Avoiding products with [[xenoestrogen]]s, which have a similar effect to naturally produced estrogen and can increase growth of the endometrium.
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| ** Continuous [[hormonal contraception]] consists of the use of [[combined oral contraceptive pill]]s without the use of placebo pills, or the use of [[NuvaRing]] or the [[contraceptive patch]] without the break week. This eliminates monthly bleeding episodes.
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| ** [[Danazol]] (Danocrine) and [[gestrinone]] are suppressive steroids with some androgenic activity. Both agents inhibit the growth of endometriosis but their use remains limited as they may cause [[hirsutism]]. There has been some research done at Case Western Reserve University on a topical Danocrine, applied locally, which has not produced the hirsutism characteristics. The study has not yet been published in a medical journal.
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| ** Gonadotropin releasing hormone agonists ([[GnRH agonist]]s) induce a profound [[hypoestrogenism]] by decreasing FSH and LH levels. While quite effective, they induce unpleasant menopausal symptoms, and over time may lead to [[osteoporosis]]. To counteract such side effects some estrogen may have to be given back (add-back therapy).
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| **[[Aromatase inhibitor]]s are medications that block the formation of estrogen and have become of interest for researchers who are treating endometriosis.<ref>Attar E, Buttun SE. Aromatase inhibitors: the next generation of therapeutics for endometriosis? Fertil Steril 2006;85:1307-18 PMID 16647373</ref>
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| * Surgical treatment is usually a good choice if endometriosis is extensive, or very painful. Surgical treatments range from minor to major surgical procedures.
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| ** [[Laparoscopy]] is very useful not only to diagnose endometriosis, but to treat it. With the use of scissors, cautery, lasers, hydrodissection, or a sonic scalpel, endometriotic tissue can be ablated or removed in an attempt to restore normal anatomy. Studies have shown that with true excision [http://www.endometriosissurgeon.com] such as the Redwine Method, recurrence rates are less than 20%.
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| ** [[Laparotomy]] can be used for more extensive surgery either in attempt to restore normal anatomy, or at least preserve reproductive potential.
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| **[[Hysterectomy]] (removal of the [[uterus]] and surrounding tissue) and bilateral salpingo-oophorectomy (removal of the [[fallopian tubes]] and [[ovaries]]).
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| **[[Bowel resection]] can be useful if there is bowel involvement.
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| **For patients with extreme pain, a presacral [[neurectomy]] may be indicated where the nerves to the uterus are cut.
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| * Raising your [[serotonin]] level: low serotonin levels reduce the pain threshold, and make people more vulnerable to every pain. Women particularly need adequate amounts of light during the second half of their menstrual cycles, when their serotonin levels may already be low.
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| ** Many people like sweets: eating sugar or chocolate temporarily increases serotonin levels, but creates a rebound effect, characterized by heightened PMS symptoms.
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| ** [[Melatonin]] and [[serotonin]] are increased by [[meditation]], and the stress hormone [[cortisol]] is decreased. Melatonin causes you to go into delta-sleep, during which period Human Growth Hormone is released. As melatonin levels drop from childhood (100%) to age 20 (30%) and age 30 (20%), recovering takes more time, so good deep sleep is essential.
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| ** Serotonin is manufactured by the body from a partial protein or amino acid called tryptophan. This amino acid is found in many foods, including soy, turkey, chicken, halibut, and beans.
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| ** [[Lavender]], primarily in the form of oil, has been found to reduce several physiological parameters of stress by stimulating serotonin and inducing a feeling of calm and happiness.
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| ** [[Light therapy]] increases your [[serotonin]] levels.
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| * Complementary or [[Alternative medicine]] are used by many women who get great relief from the pain and discomforts from a variety of available treatments.
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| ** [[Nutrition]]: There has been research showing that prostaglandins series 1 and 3 have an anti inflammatory effect which can help with endometriosis. Nutrition can also help to boost the immune system, which is important if endometriosis is an auto-immune disorder.
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| ** Avoid coffee and alcohol. Both can increase the levels of estrone.
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| ** In many cases, [[cannabis (drug)|marijuana]] ([[cannabis sativa]]) has proven to relax or suppress the pain and relieve stress. Although doctors consider this to be an unorthodox method given all the treatments available for this condition and the fact that it may not produce any long term effects, this may still be an effective way to combat endometriosis. Research on this method is minimal since the drug is illegal in many countries.
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| ==Prognosis==
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| Proper counseling of patients with endometriosis requires attention to several aspects of the disorder. Of primary importance is the initial operative staging of the disease to obtain adequate information on which to base future decisions about therapy. The patient's symptoms and desire for childbearing dictate appropriate therapy. Most patients can be told that they will be able to obtain significant relief from pelvic pain and that treatment will assist them in achieving pregnancy. <ref name=AMN>{{cite web | author = Sanaz Memarzadeh, MD, Kenneth N. Muse, Jr., MD, & Michael D. Fox, MD | title =Endometriosis| work =Differential Diagnosis and Treatment of endometriosis. | url=http://www.health.am/gyneco/endometriosis/ | year = 2006 | month= Sep 21 | publsiher=Armenian Health Network, Health.am | accessdate=2006-12-19}}</ref>
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| ==Complications==
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| The main complication of endometriosis is impaired fertility. Approximately one-third to one-half of women who have difficulty becoming pregnant have endometriosis.
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| For pregnancy to occur, an egg must be released from an ovary and travel through the fallopian tube to the uterus (womb), where it can be fertilized by a male's sperm and then attach to the uterine wall to begin development. Endometriosis can produce adhesions that can trap the egg near the ovary. It may inhibit the mobility of the fallopian tube and impair its ability to pick up the egg. In most cases, however, endometriosis probably interferes with conception in more complex ways.
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| * Internal scarring
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| * Adhesions
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| * Pelvic cysts
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| * Chocolate cysts
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| * Ruptured cyst
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| * Infertility - occurs in about 30-40% of cases.
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| Complications of endometriosis consist of bowel and ureteral obstruction resulting from pelvic adhesions. Rarely, endometriosis can be extraperitoneal and is found in the lungs and CNS. <ref name=WebMD >{{cite web | author = Shawn Daly, MD, Consulting Staff, Catalina Radiology, Tucson, Arizona | title =Endometrioma/Endometriosis| work = | url=http://www.emedicine.com/radio/topic250.htm | year = 2004 | month= Oct 18 | publsiher=WebMD | accessdate=2006-12-19}}</ref>
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| == Infertility ==
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| Endometriosis is associated with a lowered fertility and is the second leading cause of infertility in females that ovulate normally (the leading cause is [[pelvic inflammatory disease]]).
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| === Treatment of infertility ===
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| Laparoscopy to remove or vaporize the growths in women who have mild or minimal endometriosis is effective in improving fertility. One study has shown that surgical treatment of endometriosis approximately doubles the [[fecundity]] (pregnancy rate).<ref>Marcoux S, Maheux R, Berube S. Laparoscopic surgery in infertile women with minimal or mild endometriosis. Canadian Collaborative Group on Endometriosis. N Engl J Med. 1997 Jul 24;337(4):217-22. PMID 9227926.</ref>
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| In patients with small amounts of endometriosis treatment with fertility medication [[clomiphene]] may lead to success.
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| [[In-vitro fertilization]] (IVF) procedures are effective in improving fertility in many women with endometriosis. IVF makes it possible to combine sperm and eggs in a laboratory and then place the resulting embryos into the woman's uterus. IVF is one type of assisted reproductive technology that may be an option for women and families affected by infertility related to endometriosis.
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| == Relation to cancer ==
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| Endometriosis is not the same as [[endometrial cancer]]. However it is hypothesized that the excess estrogen creation and abnormal cell growth caused by endometriosis may eventually cause ovarian or other cancers over a woman's lifetime. The staging of endometriosis is similar to the staging of cancers, as well, in the sense that they both gauge the spread of disease in a similar fashion to different zones of the body.
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| Current research has demonstrated an association between endometriosis and certain types of cancers.<ref>{{cite web
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| | title = Endometriosis cancer risk
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| | publisher = medicalnewstoday.com
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| | date = 5 July 2003
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| | url = http://www.medicalnewstoday.com/medicalnews.php?newsid=3890
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| | accessdate = 2007-07-03 }}</ref><ref>{{cite web
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| | last = Roberts
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| | first = Michelle
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| | title = Endometriosis 'ups cancer risk'
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| | work = [[BBC News]]
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| | publisher = BBC / news.bbc.co.uk
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| | date = 3 July 2007
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| | url = http://news.bbc.co.uk/2/hi/health/6262140.stm
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| | accessdate = 2007-07-03 }}</ref> Endometriosis often also coexists with [[leiomyoma]] or [[adenomyosis]], as well as autoimmune disorders.
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| ==References==
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| {{Reflist|2}}
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| ==See also==
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| * [[Ovarian cyst]] (Endometrioid cyst)
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| ==External links==
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| * {{DMOZ|Health/Women%27s_Health/Conditions_and_Diseases/Uterus/Endometriosis/}}
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| == Endometriosis UK ==
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| '''Endometriosis UK''' is the leading UK charity that supports women living with endometriosis. They provide information and support, and work to increase understanding through campaigning and awareness. They provide services that enable those with endometriosis to understand their disease and to take control of their condition. These services include Local Groups and a free UK Helpline 0808 808 2227, both of which are staffed by trained volunteers. For more information please visit http://www.endometriosis-uk.org[http://www.endometriosis-uk.org]
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| <br />
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| {{Diseases of the pelvis, genitals and breasts}}
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| [[Category:Gynecology]]
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| [[Category:Menstruation]]
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| [[bg:Ендометриоза]]
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| [[fr:Endométriose]]
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| [[mk:Ендометриоза]]
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| [[ms:Endometriosis]]
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| [[nl:Endometriose]]
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| [[ja:子宮内膜症]]
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| [[nn:Endometriose]]
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| [[pl:Endometrioza]]
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| [[pt:Endometriose]]
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| [[ru:Эндометриоз]]
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| [[sl:Endometrioza]]
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| [[fi:Endometrioosi]]
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| [[sv:Endometrios]]
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| [[tr:Endometriosis]]
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