Hemorrhagic Adrenal Myelolipoma after Trauma to Left Adrenal Gland: A Case Report

Myelolipomas are rare benign tumors comprised of mature adipose tissue and hematopoietic elements. Adrenal myelolipomas associated with traumatic adrenal injury are relatively rare and less common on the left due to the limited size and well-protected position of the gland. A 59-year-old female admitted to the emergency department with intermittent left flank pain radiating to the left abdomen after falling from the bed six hours earlier. Her vital signs were stable, and she had tenderness over the left flank area and left abdomen. Her initial hemoglobin level was 12.9 g/dL. Bedside focused assessment with sonography for trauma revealed unclear left kidney margins. Contrast abdominal computed tomography (CT) revealed a space-occupying mass, 11.6×10.4×8.8 cm in dimension, in the left suprarenal region with active bleeding in the lower pole. Angiography did not reveal any active contrast medium extravasation. The CT-guided biopsy, was well performed concomitantly with angiography. Pathological assessment of the biopsy specimen revealed the presence of mostly adipose tissue with few erythrocytes and leukocytes. She was diagnosed with adrenal myelolipoma and admitted to the urology ward for left adrenalectomy with tumor resection. Traumatic adrenal injury, an unusual presentation of adrenal myelolipoma incidentally found in less than 5% of all abdominal blunt injuries, should be considered in cases of bleeding with trauma to the flank for prompt treatment.