2025年3月1日 · Renal angiomyolipomas (AML) are a type of benign renal neoplasm encountered both sporadically and as part of a phakomatosis, most commonly tuberous sclerosis. They are considered one of a number of tumors with perivascular epithelioid cellular differentiation (PEComas) and are composed of vascular, smooth muscle and fat elements.

2017年7月20日 · Angiomyolipoma (AML) is the most common benign solid renal tumor [1 – 3]. Most AMLs contain fat that is clearly visible on CT and MR images, so these tumors can be easily diagnosed without biopsy or surgery. Approximately 5% of renal AMLs, however, have too little fat to be identified in a CT or MRI examination [3, 4].

2022年10月5日 · 大多数aml可以通过显示肿瘤内部代表脂肪的低密度区获得诊断，其ct值多低于-10hu。 然而，大约4％—5％的AML不含或仅含有极少量脂肪组织，影像上无法识别。

Renal angiomyolipoma (AML) is an uncommon renal tumour, generally composed of mature adipose tissue, dysmorphic blood vessels and smooth muscle. Identification of intratumoral fat on unenhanced CT images is the most reliable finding for establishing the diagnosis of renal AML.

2017年2月1日 · Because most RCC demonstrates early enhancement and rapid washout, 53 some have suggested that gradual enhancement on CT is suggestive of AML. 54 However, others maintain that most AMLs show early strong enhancement with subsequent washout. 45 These discrepancies may have been the result of including both hyperattenuating and …

2024年1月1日 · An overview of the imaging features of acute AML rupture will be provided, principally relating to computed tomography (CT) assessment. A series of cases will be presented, including a case of peripartum renal AML rupture during Caesarean section leading to diagnostic dilemma.

Angiomyolipoma (AML) is the most common benign solid renal tumor [1–3]. Most AMLs contain fat that is clearly visible on CT and MR images, so these tumors can be eas- ily diagnosed without biopsy or surgery. Ap- proximately 5% of renal AMLs, however, have too little fat to be identified in a CT or MRI examination [3, 4].

2019年1月8日 · CT or MRI features can provide clues for differentiating fat-rich AML from fat-containing RCC and fat-poor AML from clear cell RCC. Fat-invisible AML, however, is difficult to differentiate from non–clear cell RCC on the basis of CT or MRI features.

2024年11月10日 · Classic angiomyolipoma (AML): Lipid-rich echogenic mass with posterior acoustic shadowing • Fat-poor subtype (“AML with minimal fat”): Usually hyperechoic but fat not detected by CT or MR • CT/MR more specific than US • Color Doppler: Absent from fatty component, may be present in soft tissue/vascular components . Top Differential ...

We review recent developments and provide a radiological classification of angiomyolipomas that helps physicians understand the various types and learn how to both diagnose and manage them. Keywords: Angiomyolipoma, Perivascular epithelioid cell tumors, PEComa, Renal cell carcinoma, Fat poor AML, AML with minimal fat.