An unusual cause of rectal pressure and difficult defecation: Giant pelvic myelolipoma

Abstract

Myelolipoma is a rare benign neoplasm consisting of mature adipose and haematopoietic tissues and usually found in the adrenal gland. However, myelolipoma can be rarely detected in extra-adrenal regions but often detected incidentally in imaging studies performed for other reasons or at autopsy. While adrenal myelolipomas are easily recognised given its typical imaging features, the diagnosis of extra-adrenal myelolipomas may be challenging. Herein, we aimed to present computed tomography and magnetic resonance imaging findings of pelvic extra-adrenal myelolipoma in a 77-year-old woman with hepatocellular carcinoma and to describe the differential diagnoses.