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angiomyolipoma, MedPix™ : 9254 - Medical Image Database and Atlas
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Location and Category

Location:
More Like This ? Abdomen - Generalized 		Sublocation:
More Like This ? Retroperitoneum		Category:
More Like This ? Neoplasm, benign
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More Like This ? angiomyolipoma
Topic 9254 - Created: 2009-06-28 21:41:52-04 - Modified: 2009-07-08 12:17:02.164612-04
ACR Index: 8.-1

Angiomyolipoma (AML)
• Hamartoma
» Fat, smooth muscle, blood vessels
• May bleed if >4cm
» Smaller lesions are not treated
• Typically enhance strongly
» Predominantly myxomatous AMLs may be hypovascular
• Strong association of Tuberous Sclerosis: 80% of Tuberous Sclerosis patients have mutliple AML's, usually bilateral

Radiographic Features
• Presence of fat is virtually diagnostic
» Case reports of Renal Cell Carcinoma with sequestered fat, make sure fat is not from renal pelvis
• No calcifications
• Variable appearance
» Predominance of vessel-T2 bright, strong enhancement
» Predominance of muscle-looks like Renal cell carcinoma


Contributor Credits

Submitted by: John B Clark - Author Info
Affiliation: Walter Reed Army Medical Center
Approved By: Marcia C. Javitt - Editor Info
Affiliation: Walter Reed Army Medical Center

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