Case report demonstrates a rare retroperitoneal extrarenal angiomyolipoma, highlighting its role in the differential diagnosis of retroperitoneal masses.
INTRODUcTIONAngiomiolipomas (AML) are benign mesenchymal tumors of unknown origin, that consist of mature adipose tissue, muscle fibers and blood vessel with thickened wall (1).Renal AMLs represent 1% of renal tumors.However, extra-renal AMLs are extremely rare, and 60 cases have been described.Most extra--renal AMLs were observed at liver (18 patients) and at retroperitoneum (16 cases) (2).We report a retroperitoneum extra-renal AML.
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Wroclawski et al. (2018) studied this question.
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