Angiomyolipoma differential diagnosis: Difference between revisions
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{{Angiomyolipoma}} | {{Angiomyolipoma}} | ||
{{CMG}} {{AE}}{{Faizan}} | {{CMG}} {{AE}}{{Faizan}} | ||
When an AML has typical appearances there is essentially no differential. If atypical, especially when fat-poor other lesions to consider include: | When an AML has typical appearances there is essentially no differential. If atypical, especially when fat-poor other lesions to consider include: | ||
*retroperitoneal liposarcoma invading the kidney: | *retroperitoneal liposarcoma invading the kidney: | ||
**presence of a large vessel extending into the renal cortex suggestive of AML; liposarcoma is hypovascular | **presence of a large vessel extending into the renal cortex suggestive of AML; liposarcoma is hypovascular | ||
**renal parenchymal defect at the site of tumour contact favours exophytic angiomyolipoma- claw sign | **renal parenchymal defect at the site of tumour contact favours exophytic angiomyolipoma- claw sign | ||
**calcifications suggest liposarcoma | **calcifications suggest liposarcoma | ||
*adrenal myelolipoma | *adrenal myelolipoma | ||
*renal cell carcinoma (RCC) | *renal cell carcinoma (RCC) | ||
**may contain fat: lipid necrosis or osseous metaplasia | **may contain fat: lipid necrosis or osseous metaplasia | ||
*oncocytoma: may contain fat | *oncocytoma: may contain fat | ||
*Wilms tumour: may contain fat | *Wilms tumour: may contain fat | ||
*perirenal fat entrapment / renal junctional parenchymal defect | *perirenal fat entrapment / renal junctional parenchymal defect | ||
==References== | ==References== | ||
{{Reflist|2}} | {{Reflist|2}} |
Revision as of 14:41, 21 September 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Faizan Sheraz, M.D. [2] When an AML has typical appearances there is essentially no differential. If atypical, especially when fat-poor other lesions to consider include:
- retroperitoneal liposarcoma invading the kidney:
- presence of a large vessel extending into the renal cortex suggestive of AML; liposarcoma is hypovascular
- renal parenchymal defect at the site of tumour contact favours exophytic angiomyolipoma- claw sign
- calcifications suggest liposarcoma
- adrenal myelolipoma
- renal cell carcinoma (RCC)
- may contain fat: lipid necrosis or osseous metaplasia
- oncocytoma: may contain fat
- Wilms tumour: may contain fat
- perirenal fat entrapment / renal junctional parenchymal defect