Filariasis differential diagnosis: Difference between revisions

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! colspan="7" |Symptoms
! colspan="7" |Symptoms


! Signs
! rowspan="2" | Signs


! rowspan="2" | Gold standard Investigation to diagnose
! rowspan="2" | Gold standard Investigation to diagnose
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!Scrotal swelling
!Scrotal swelling
!Symptoms of primary disease
!Symptoms of primary disease
!
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* Scrotal elephantiasis
* Scrotal elephantiasis
* [[Lymphadenopathy|Lymphadenopathies]]
* [[Lymphadenopathy|Lymphadenopathies]]
* [[Rhonchi]] may be present in patients with Pulmonary tropical eosinophilia syndrome
* [[Rhonchi]] may be present in patients with Pulmonary tropical eosinophilia syndrome.
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|
'''Preparing Blood Smears'''  
'''Preparing Blood Smears'''  
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| +


(If congenial , Venous insufficiency un testicular veins may form scrotal swelling)
(If congenial)
| -
| -
|
|
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([[hypothyroidism]] )
([[hypothyroidism]] )
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|
* Pretibial myxedema
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* Thyroid function tests.
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|-
|([[Cellulitis]]-[[Erysipelas|erysipelas-]]<nowiki/>skin abcess)
|([[Cellulitis]]-[[Erysipelas|erysipelas-]]<nowiki/>skin abcess)
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|According to the primary cause ( Echo- LFT- RFT)
|According to the primary cause ( Echo- LFT- RFT)
|-
| colspan="10" |
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|}


==References==
==References==
{{reflist|2}}
{{reflist|2}}

Revision as of 15:31, 30 June 2017

Filariasis Microchapters

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Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Filariasis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

X Ray

CT Scan

MRI

Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

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Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Mohammed Abdelwahed M.D[2]


Filariasis Microchapters

Home

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating Filariasis from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

X Ray

CT Scan

MRI

Ultrasound

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Surgery

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Filariasis differential diagnosis On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

slides

Images

American Roentgen Ray Society Images of Filariasis differential diagnosis

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Filariasis differential diagnosis

on Filariasis differential diagnosis

Filariasis differential diagnosis in the news

Blogs on Filariasis differential diagnosis

Directions to Hospitals Treating Filariasis

Risk calculators and risk factors for Filariasis differential diagnosis

Overview

Lymphatic filariasis must be differentiated from other causes of lower limb edema, such as chronic venous insufficiency, acute deep venous thrombosis, lipedema, myxedema, cellulitis and causes of generalized edema. Hydrocele sholud be differentiated from other causes of testicular masses. Breast lymphedema must be differentiated from breast cancer.

Differentiating filariasis from other diseases

Lymphatic filariasis must be differentiated from other causes of lower limb edema like chronic venous insufficiency, acute deep venous thrombosis, lipedema, myxedema, cellulitis and causes of generalized edema.

Diseases Symptoms Signs Gold standard Investigation to diagnose
History Onset Pain Fever Laterality Scrotal swelling Symptoms of primary disease
Lymphatic filariasis
  • History of living in endemic area or travelling to it
Chronic + + Bilateral + -

Preparing Blood Smears

Thick Smears

Thick smears consist of a thick layer of dehemoglobinized (lysed) red blood cells (RBCs).Thick smears allow a more efficient detection of parasites (increased sensitivity).

Thin Smears Thin smears consist of blood spread in a layer such that the thickness decrease.

By the ultrasound, the following findings can be observed:

  • Dilated lymphatic channels
  • Living worms tend to be in motion which called "filarial dance" sign.
Chronic venous insufficiency
  • History of untreated varicose veins
  • Painful bilateral lower limb swelling increase with standing and decreased by rest and leg elevation
Chronic + - Bilateral +

(If congenial)

-
  • Typical varicose veins
  • Skin change distribution correlate with varicose veins sites in the medial side of ankle and leg
  • Reduction of swelling with limb elevation.
Duplex ultrasound will demonstrate typical findings of venous valvular insufficiency
Acute deep venous thrombosis
  • History of prolonged recumbency
  • Classic symptoms of DVT include acute unilateral swelling, pain, and erythema
Acute + - Unilateral - May be associated with primary disease mandates recumbency for long duration
  • Dilated superficial veins
  • Difference in calf diameter were twice as likely to have DVT(most impotant sign )[1]
  • Calf pain on passive dorsiflexion of the foot Homan's sign) isn't realiable sign.
Lipedema Family history especially in women; X-linked dominant or autosomal dominant condition[2] Abnormal deposition of fat and edema and easy bruising. Chronic + - Bilateral - - Tender with palpation

Negative Semmer sign to differentiate from liphedema;[3]

(pinching) the skin on the upper surface of the toes. If it t is possible to grasp a thin fold of tissue the it is negative result. In a positive result, it is only possible to grasp a lump of tissue.

MRI offers strong qualitative and quantitative parameters in the diagnosis of lipedema [4]
Myxedema
  • History of untreated hypothyroidism
  • Infiltration of the skin with glycosaminoglycans with associated water retention
Chronic + - Bilateral - +

(hypothyroidism )

  • Pretibial myxedema
  • Thyroid function tests.
(Cellulitis-erysipelas-skin abcess) Acute painful swelling and may be fever Acute + + Unilateral - -
  • Tenderness,hotness and may be flactuation if abscess formed
  • Lymphangitis in nearby lymph nodes.
  • Toxemia and fever in severe cases.
  • Cellulitis involves the deeper dermis erysipelas involves the upper dermis.[5]
  • Usually it doesn't need any laboratory tests to diagnose.[6]
  • Blood cultures are warranted for patients in the following circumstances:[7]
  1. Systemic toxicity
  2. Extensive skin or soft tissue involvement
  3. Underlying comorbidities
  4. persistent cellulitis
Other causes of generalized edema History of chronic general condition(cardiac-liver-renal) Chronic - - Bilateral - + According to the primary cause ( Echo- LFT- RFT)

References

  1. Goodacre S, Sutton AJ, Sampson FC (2005). "Meta-analysis: The value of clinical assessment in the diagnosis of deep venous thrombosis". Ann Intern Med. 143 (2): 129–39. PMID 16027455. Review in: ACP J Club. 2006 Mar-Apr;144(2):46-7 Review in: Evid Based Med. 2006 Apr;11(2):56
  2. Child AH, Gordon KD, Sharpe P, Brice G, Ostergaard P, Jeffery S; et al. (2010). "Lipedema: an inherited condition". Am J Med Genet A. 152A (4): 970–6. doi:10.1002/ajmg.a.33313. PMID 20358611.
  3. Trayes KP, Studdiford JS, Pickle S, Tully AS (2013). "Edema: diagnosis and management". Am Fam Physician. 88 (2): 102–10. PMID 23939641.
  4. Dimakakos PB, Stefanopoulos T, Antoniades P, Antoniou A, Gouliamos A, Rizos D (1997). "MRI and ultrasonographic findings in the investigation of lymphedema and lipedema". Int Surg. 82 (4): 411–6. PMID 9412843.
  5. Stevens DL, Bisno AL, Chambers HF, Dellinger EP, Goldstein EJ, Gorbach SL; et al. (2014). "Practice guidelines for the diagnosis and management of skin and soft tissue infections: 2014 update by the infectious diseases society of America". Clin Infect Dis. 59 (2): 147–59. doi:10.1093/cid/ciu296. PMID 24947530.
  6. Raff AB, Kroshinsky D (2016). "Cellulitis: A Review". JAMA. 316 (3): 325–37. doi:10.1001/jama.2016.8825. PMID 27434444.
  7. Woo PC, Lum PN, Wong SS, Cheng VC, Yuen KY (2000). "Cellulitis complicating lymphoedema". Eur J Clin Microbiol Infect Dis. 19 (4): 294–7. PMID 10834819.
  8. Leppard BJ, Seal DV, Colman G, Hallas G (1985). "The value of bacteriology and serology in the diagnosis of cellulitis and erysipelas". Br J Dermatol. 112 (5): 559–67. PMID 4005155.