Renal angiomyolipomas: Typical and atypical features on computed tomography and magnetic resonance imaging.

IF 1.4 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Andres Labra, Giancarlo Schiappacasse, Diego Constenla, Joaquin Cristi
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引用次数: 0

Abstract

Angiomyolipomas (AMLs) represent the most common benign solid renal tumors. The frequency of their detection in the general population is increasing owing to advances in imaging technology. The objective of this review is to discuss computed tomography (CT) and magnetic resonance imaging findings for both typical and atypical renal AMLs, along with their associated complications. AMLs are typically defined as solid triphasic tumors composed of varying amounts of dysmorphic and tortuous blood vessels, smooth muscle components and adipose tissue. In an adult, a classical renal AML appears as a solid, heterogeneous renal cortical mass with macroscopic fat. However, up to 5% of AMLs contain minimal fat and cannot be reliably diagnosed by imaging. Fat-poor AMLs can appear as hyperattenuating masses on unenhanced CT and as hypointense masses on T2WI; other AMLs may be isodense or exhibit cystic components. Hemorrhage is the most common complication, and AMLs with hemorrhage can mimic other tumors, making their diagnosis challenging. Understanding the variable and heterogeneous nature of this neoplasm to correctly classify renal AMLs and to avoid misdiagnosis of other renal lesions is crucial.

肾血管平滑肌脂肪瘤:计算机断层和磁共振成像的典型和不典型特征。
血管平滑肌脂肪瘤(AMLs)是最常见的良性实体肾肿瘤。由于成像技术的进步,在一般人群中检测到这些疾病的频率正在增加。本综述的目的是讨论典型和非典型肾aml的计算机断层扫描(CT)和磁共振成像结果及其相关并发症。aml通常被定义为由不同数量的畸形和扭曲的血管、平滑肌成分和脂肪组织组成的实体三相肿瘤。在成人中,典型的肾性急性髓性白血病表现为固体的、不均匀的肾皮质肿块,伴肉眼可见的脂肪。然而,高达5%的aml含有少量脂肪,不能通过影像学可靠地诊断。非增强CT表现为高衰减肿块,T2WI表现为低密度肿块;其他aml可能呈等密度或囊性成分。出血是最常见的并发症,伴有出血的aml可以模仿其他肿瘤,使其诊断具有挑战性。了解这种肿瘤的多变性和异质性对正确分类肾脏aml和避免误诊其他肾脏病变是至关重要的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
World journal of radiology
World journal of radiology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
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8.00%
发文量
35
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