Angiomyolipoma: Difference between revisions
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Demonstration of fat in renal tumor is virtually diagnostic of angiomyolipoma. Most small lesions are asymptomatic and incidental findings on images. | Demonstration of fat in renal tumor is virtually diagnostic of angiomyolipoma. Most small lesions are asymptomatic and incidental findings on images. | ||
==Diagnostic Findings== | ===Diagnostic Findings=== | ||
[http://www.radswiki.net Images courtesy of RadsWiki] | [http://www.radswiki.net Images courtesy of RadsWiki] | ||
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[[Image:Angiomyolipoma 002.jpg|thumb|left|350px|CT: Large right angiomyolipoma]] | [[Image:Angiomyolipoma 002.jpg|thumb|left|350px|CT: Large right angiomyolipoma]] | ||
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==Complications== | |||
Complications include [[hematuria]], [[flank pain]], and [[shock]] as a result of spontaneous [[hemorrhage]]. | |||
==External links== | ==External links== | ||
Revision as of 17:29, 7 March 2009
| Angiomyolipoma | |
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| ICD-10 | D30.0 |
| ICD-9 | 223.0 |
| ICD-O: | M8860/0 |
| DiseasesDB | 29496 |
| MeSH | D018207 |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
Angiomyolipoma is a benign renal lesion. It is a choristoma composed of variable amounts of fat, vascular, and smooth muscle elements. The lesion is well demarcated and contains mature elements. The incidence is about 0.3-3%. It occurs in more than 50% of individuals with tuberous sclerosis, often bilaterally.
It is twice as common in females as in males. The fat density of the tumour on CT is pathognomonic.
Types
- Isolated Angiomyolipoma (80%)
- Angiomyolipoma is about 4 times more common in women than in men.
- Interestingly, 80% of the cases involve the right kidney.
- Angiomyolipoma associated with tuberous sclerosis (20%).
- Angiomyolipoma occurs in 80% patients with tuberous sclerosis.
- Angiomyolipoma also occurs young women with lymphangiomyomatosis without other stigmata of tuberous sclerosis. Angiomyolipoma and lymphangiomyomatosis are sometimes considered the forme fruste of tuberous sclerosis.
Diagnosis
Demonstration of fat in renal tumor is virtually diagnostic of angiomyolipoma. Most small lesions are asymptomatic and incidental findings on images.
Diagnostic Findings
Complications
Complications include hematuria, flank pain, and shock as a result of spontaneous hemorrhage.