CASE 71 A 41-year-old man presents with right inguinal pain. Axial contrast-enhanced computed tomography (CT) image through the upper abdomen shows a small nonenhancing right adrenal mass lesion with central fat density (Fig. 71.1). Myelolipoma Myelolipoma is a benign lesion found in adrenal and extra-adrenal sites that contains mature fat and marrow elements. Extra-adrenal sites of myelolipoma are the retroperitoneum, presacral region, perirenal locations, liver, and mediastinum. Myelolipoma is usually asymptomatic and is an incidental finding on imaging studies done for other indications.
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