Abstract
The angiomyolipoma (AML) is a mixed mesenchymal tumor that rarely arises in the liver, being more frequent in the kidney. It presents as single or multiple lesions. It is constituted from smooth muscle cells, adipocytes, and blood vessels in variable percentages influencing imaging appearance. AML is benign and rarely evolves into a malignant form with invasion of adjacent vessels and metastases in the omental zone [1]. The preoperative diagnosis is not easy because of the not-infrequent overlapping findings with other benign or malignant lesions with fatty content [2]. The size can vary from few millimeters up to 30 cm, so AML can be an incidental finding in asymptomatic patients or, in large lesions, presents with abdominal pain due to compression of adjacent structures or rupture with bleeding [3].
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Bartolotta, T.V., Taibbi, A., Midiri, M. (2015). Other Rare Lesions. In: Atlas of Contrast-enhanced Sonography of Focal Liver Lesions. Springer, Cham. https://doi.org/10.1007/978-3-319-17539-3_5
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DOI: https://doi.org/10.1007/978-3-319-17539-3_5
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