Hamartoma differential diagnosis: Difference between revisions
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'''Hypothalamic hamartomas''' | '''Hypothalamic hamartomas''' | ||
The differential diagnosis is broadly that of suprasellar and hypothalamic lesions, although the imaging characteristics of hypothalamic hamartomas significantly reduces the differential. Hypothalamic-chiasmatic glioma is the main differential. Most other lesions encountered in the region either have markedly different signal intensity or demonstrate enhancement on MRI.<ref name=“radio"> Hypothalamic hamartoma. Dr Donna D'Souza et al.http://radiopaedia.org/articles/hypothalamic-hamartoma Radiopedia Accessed on December 08, 2015 </ref> | *The differential diagnosis is broadly that of suprasellar and hypothalamic lesions, although the imaging characteristics of hypothalamic hamartomas significantly reduces the differential. | ||
*Hypothalamic-chiasmatic glioma is the main differential. | |||
The table below summarizes the findings that differentiate [[hypothalamic hamartoma]] from other conditions that are also suprasellar and hypothalamic lesions. <ref name="pmid16611766">{{cite journal |vauthors=Amstutz DR, Coons SW, Kerrigan JF, Rekate HL, Heiserman JE |title=Hypothalamic hamartomas: Correlation of MR imaging and spectroscopic findings with tumor glial content |journal=AJNR Am J Neuroradiol |volume=27 |issue=4 |pages=794–8 |year=2006 |pmid=16611766 |doi= |url=}}</ref> | *Most other lesions encountered in the region either have markedly different signal intensity or demonstrate enhancement on MRI.<ref name=“radio"> Hypothalamic hamartoma. Dr Donna D'Souza et al.http://radiopaedia.org/articles/hypothalamic-hamartoma Radiopedia Accessed on December 08, 2015 </ref> | ||
*The table below summarizes the findings that differentiate [[hypothalamic hamartoma]] from other conditions that are also suprasellar and hypothalamic lesions. <ref name="pmid16611766">{{cite journal |vauthors=Amstutz DR, Coons SW, Kerrigan JF, Rekate HL, Heiserman JE |title=Hypothalamic hamartomas: Correlation of MR imaging and spectroscopic findings with tumor glial content |journal=AJNR Am J Neuroradiol |volume=27 |issue=4 |pages=794–8 |year=2006 |pmid=16611766 |doi= |url=}}</ref> | |||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''Hypothalamic-chiasmatic [[glioma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''Hypothalamic-chiasmatic [[glioma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Hypothalamic-optochiasmatic gliomas are a subset of astrocytic tumours which have tendency to occur in patients with [[neurofibromatosis type 1]] | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Hypothalamic-optochiasmatic gliomas are a subset of astrocytic tumours which have tendency to occur in patients with [[neurofibromatosis type 1]] | |||
*These may involve the optic nerves, the optic chiasm, and the [[optic tracts]] | |||
* Between 20 and 50% of patients with hypothalamic [[gliomas]] have a positive family history of von Recklinghausen disease ([[NF-1]]) | |||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''[[Craniopharyngioma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''[[Craniopharyngioma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Craniopharyngioma is a type of brain tumor derived from pituitary gland embryonic tissue | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Craniopharyngioma is a type of brain tumor derived from pituitary gland embryonic tissue | |||
*Occurs most commonly in children but also in men and women between 50 -60 years of age | |||
*Symptoms may present with bitemporal inferior [[quadrantanopia]] leading to bitemporal [[hemianopia]], as the tumor may compress the optic chiasm | |||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''[[Rathke's pouch|Rathke's cleft cyst]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''[[Rathke's pouch|Rathke's cleft cyst]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Rathke's cleft cyst is a benign growth found on the pituitary gland in the brain, specifically a fluid-filled cyst in the posterior portion of the [[anterior pituitary gland]] | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Rathke's cleft cyst is a benign growth found on the pituitary gland in the brain, specifically a fluid-filled cyst in the posterior portion of the [[anterior pituitary gland]] | |||
*Rathke's cleft cyst occurs when the Rathke's pouch does not develop properly and ranges in size from 2 to 40mm in diameter | |||
*Asymptomatic cysts are commonly detected during autopsies in 2 - 26% of individuals who have died of unrelated causes | |||
*Females are twice as likely as males to develop a cyst | |||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''[[Pituitary macroadenoma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''[[Pituitary macroadenoma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Pituitary macroadenoma is a common pituitary gland tumor | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Pituitary macroadenoma is a common pituitary gland tumor | |||
*Patients with pituitary adenoma may progress to develop lethargy, headache, nausea, and vomiting | |||
*Common complications of pituitary adenoma include bitemporal hemianopia, anosmia, acromegaly, and gigantism | |||
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'''Pulmonary hamartomas''' | '''Pulmonary hamartomas''' | ||
The differential is dependent on whether fat or calcification is identifiable within the lesion. If fat is | *The differential is dependent on whether fat or calcification is identifiable within the lesion. If fat is visualized then the differential is narrow, with almost all cases representing pulmonary hamartoma. | ||
*The presence of calcification also significantly narrows the differential, but to a lesser degree. | |||
*If neither fat, nor calcification is present, then the differential is that of a solitary pulmonary nodule and is significantly broader. | |||
*The table below summarizes the findings that differentiate [[pulmonary hamartoma]] from other conditions that cause a fat containing solitary pulmonary nodule. | |||
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| style="padding: 5px 5px; background: #DCDCDC;" | '''[[Lipoma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" | '''[[Lipoma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Lipoma is a fat exclusive, well circumcised mass | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Lipoma is a fat exclusive, well circumcised mass | |||
*Lipomas are likely to have been present for many years, and may change size with weight fluctuation | |||
*These can also be an incidental finding | |||
*In 5-15% of patients lipomas are multiple, and approximately a third of these will be familial<ref name=“radio"> Lipoma. Dr Ahmed Abd Rabou and A.Prof Frank Gaillard et al.http://radiopaedia.org/articles/lipoma Accessed on December 08, 2015</ref> | |||
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| style="padding: 5px 5px; background: #DCDCDC;" | '''[[Myelolipoma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" | '''[[Myelolipoma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Myelolipoma is a very rare, benign pulmonary lesion, usually presenting as an asymptomatic pulmonary nodule | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Myelolipoma is a very rare, benign pulmonary lesion, usually presenting as an asymptomatic pulmonary nodule | |||
*Myelolipoma is mainly composed of mature adipose tissue and normal hematopoietic cells.<ref name="pmid25789022">{{cite journal |vauthors=Xu Q, Yin X, Huang W, Sun J, Wu X, Lu L |title=Intrapulmonary myelolipoma and its computed tomography features: A case report and literature review |journal=Oncol Lett |volume=9 |issue=4 |pages=1677–1680 |year=2015 |pmid=25789022 |pmc=4356384 |doi=10.3892/ol.2015.2913 |url=}}</ref> | |||
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| style="padding: 5px 5px; background: #DCDCDC;" | '''[[Metastatic disease]]''' | | style="padding: 5px 5px; background: #DCDCDC;" | '''[[Metastatic disease]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Pulmonary metastases are common and usually asymptomatic, with constitutional symptoms relating to disseminated metastatic disease and those attributable to the primary tumour dominating | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Pulmonary metastases are common and usually asymptomatic, with constitutional symptoms relating to disseminated metastatic disease and those attributable to the primary tumour dominating | |||
*Common symptoms include hemoptysis and pneumothorax | |||
*Pulmonary metastases tend to be single or multiple<ref name=“radio"> Pulmonary metastases. Dr Ahmed Abd Rabou and A.Prof Frank Gaillard et al.http://radiopaedia.org/articles/pulmonary-metastases Accessed on December 08, 2015</ref> | |||
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| style="padding: 5px 5px; background: #DCDCDC;" | '''Pulmonary Chondroma''' | | style="padding: 5px 5px; background: #DCDCDC;" | '''Pulmonary Chondroma''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Pulmonary chondromas are usually associated with Carney’s triad | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Pulmonary chondromas are usually associated with Carney’s triad | |||
*On CT scan, chondromas appear as smoothly marginated, round, or slightly lobulated, small areas of fat | |||
*Pulmonary chondromas are common in adolescents or young adults<ref>Carneys triad.https://en.wikipedia.org/wiki/Carney's_triad Accessed on December 08, 2015 </ref> | |||
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'''Heart''' | '''Heart''' | ||
*The table below summarizes the findings that differentiate [[cardiac hamartoma]] from other conditions that cause a fat containing lesion within the striated muscle of the heart. | |||
The table below summarizes the findings that differentiate [[cardiac hamartoma]] from other conditions that cause a fat containing lesion within the striated muscle of the heart. | |||
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| style="padding: 5px 5px; background: #DCDCDC;" | '''Hibernoma''' | | style="padding: 5px 5px; background: #DCDCDC;" | '''Hibernoma''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" | | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Hibernoma is a benign neoplasm of vestigial brown fat | |||
*The majority of patients present with a slow-growing, painless, solitary mass, usually of the [[subcutaneous tissue]]s | |||
*It is much less frequently noted in the intramuscular tissue. It is not uncommon for symptoms to be present for years | |||
*In general, imaging studies show a well-defined, heterogeneous mass, usually showing a mass which is [[hypointense]] to [[subcutaneous fat]] on magnetic resonance [[T1]]-weight images. Serpentine, thin, low signal bands (septations or vessels) are often seen throughout the tumor | |||
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| style="padding: 5px 5px; background: #DCDCDC;" | '''[[Metastasis]]''' | | style="padding: 5px 5px; background: #DCDCDC;" | '''[[Metastasis]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" | | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Metastases are uncommon tumors of the heart, arising by lymphatic or hematogenous spread of a primary neoplasm | |||
*Presents with [[dyspnea]],[[congestive heart failure]], [[hypotension]] and malignant [[pericardial effusion]] | |||
*Any primary malignancy may metastasize to the heart, however, lung cancer is among the most common.<ref>Secondary cardiac neoplasm. Radiopedia.http://radiopaedia.org/articles/secondary-cardiac-neoplasms Accessed on November 24, 2015 </ref> | |||
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'''Spleen, kidneys and vascular organs''' | '''Spleen, kidneys and vascular organs''' | ||
The table below summarizes the findings that differentiate [[spleen]], [[kidneys]] and vascular organs from other conditions that cause a incidental findings that resemble hamartoma. | *The table below summarizes the findings that differentiate [[spleen]], [[kidneys]] and vascular organs from other conditions that cause a incidental findings that resemble hamartoma. | ||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''Splenic [[hemangioma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''Splenic [[hemangioma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Splenic hemangiomas, are considered the second most common focal lesion on the spleen | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Splenic hemangiomas, are considered the second most common focal lesion on the spleen | |||
*Most [[hemangioma]]s tend to be discovered in adults from mid-30s to mid-50s years of age | |||
*They may be associated with splenomegaly, [[abdominal pain]], dyspnea,and [[diarrhea]].<ref name="“radio”">Splenic hemangioma. Dr Jan Frank Gerstenmaier and Dr Yuranga Weerakkody et al http://radiopaedia.org/articles/splenic-haemangioma Accessed on December 08, 2015 </ref> | |||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''[[Retroperitoneal liposarcoma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''[[Retroperitoneal liposarcoma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" | | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Retroperitoneal liposarcoma is the most common primary retroperitoneal neoplasm | |||
*Retroperitoneal liposarcoma is a subtype of liposarcoma, a malignant tumour of mesenchymal origin that may arise in any fat-containing region of the body | |||
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| style="padding: 5px 5px; background: #DCDCDC;" |'''[[Adrenal myelolipoma]]''' | | style="padding: 5px 5px; background: #DCDCDC;" |'''[[Adrenal myelolipoma]]''' | ||
| style="padding: 5px 5px; background: #F5F5F5;" |Adrenolipomas are rare benign neoplasms that histologically consist of fat and bone marrow in varying proportions | | style="padding: 5px 5px; background: #F5F5F5;" | | ||
*Adrenolipomas are rare benign neoplasms that histologically consist of fat and bone marrow in varying proportions | |||
*In general, most tumors are unilateral, they show no predilection to one peculiar side. Symptoms of [[adrenolipoma]] include abdominal pain, haematuria, and abdominal fullness | |||
*They are rich in adipose tissue and hematopoietic elements | |||
*Most lesions are small and asymptomatic | |||
*Adrenolipomas are usually detected incidentally in autopsy or by imaging studies performed for other reasons | |||
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Revision as of 22:19, 25 January 2016
Hamartoma Microchapters |
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Hamartoma differential diagnosis On the Web |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Maria Fernanda Villarreal, M.D. [2]
Overview
Hamartomas must be differentiated from other diseases that result on fat containing lesions such as lipomas and metastases.
Differentiating Hamartoma from other Diseases
Hypothalamic hamartomas
- The differential diagnosis is broadly that of suprasellar and hypothalamic lesions, although the imaging characteristics of hypothalamic hamartomas significantly reduces the differential.
- Hypothalamic-chiasmatic glioma is the main differential.
- Most other lesions encountered in the region either have markedly different signal intensity or demonstrate enhancement on MRI.[1]
- The table below summarizes the findings that differentiate hypothalamic hamartoma from other conditions that are also suprasellar and hypothalamic lesions. [2]
Disease | Findings | |
---|---|---|
Hypothalamic-chiasmatic glioma |
| |
Craniopharyngioma |
| |
Rathke's cleft cyst |
| |
Pituitary macroadenoma |
|
Pulmonary hamartomas
- The differential is dependent on whether fat or calcification is identifiable within the lesion. If fat is visualized then the differential is narrow, with almost all cases representing pulmonary hamartoma.
- The presence of calcification also significantly narrows the differential, but to a lesser degree.
- If neither fat, nor calcification is present, then the differential is that of a solitary pulmonary nodule and is significantly broader.
- The table below summarizes the findings that differentiate pulmonary hamartoma from other conditions that cause a fat containing solitary pulmonary nodule.
Disease | Findings | |
---|---|---|
Lipoma |
| |
Myelolipoma |
| |
Metastatic disease |
| |
Pulmonary Chondroma |
|
Heart
- The table below summarizes the findings that differentiate cardiac hamartoma from other conditions that cause a fat containing lesion within the striated muscle of the heart.
Disease | Findings |
---|---|
Hibernoma |
|
Metastasis |
|
Spleen, kidneys and vascular organs
- The table below summarizes the findings that differentiate spleen, kidneys and vascular organs from other conditions that cause a incidental findings that resemble hamartoma.
Disease | Findings |
---|---|
Splenic hemangioma |
|
Retroperitoneal liposarcoma |
|
Adrenal myelolipoma |
|
References
- ↑ 1.0 1.1 1.2 Hypothalamic hamartoma. Dr Donna D'Souza et al.http://radiopaedia.org/articles/hypothalamic-hamartoma Radiopedia Accessed on December 08, 2015
- ↑ Amstutz DR, Coons SW, Kerrigan JF, Rekate HL, Heiserman JE (2006). "Hypothalamic hamartomas: Correlation of MR imaging and spectroscopic findings with tumor glial content". AJNR Am J Neuroradiol. 27 (4): 794–8. PMID 16611766.
- ↑ Xu Q, Yin X, Huang W, Sun J, Wu X, Lu L (2015). "Intrapulmonary myelolipoma and its computed tomography features: A case report and literature review". Oncol Lett. 9 (4): 1677–1680. doi:10.3892/ol.2015.2913. PMC 4356384. PMID 25789022.
- ↑ Carneys triad.https://en.wikipedia.org/wiki/Carney's_triad Accessed on December 08, 2015
- ↑ Secondary cardiac neoplasm. Radiopedia.http://radiopaedia.org/articles/secondary-cardiac-neoplasms Accessed on November 24, 2015
- ↑ Splenic hemangioma. Dr Jan Frank Gerstenmaier and Dr Yuranga Weerakkody et al http://radiopaedia.org/articles/splenic-haemangioma Accessed on December 08, 2015