Massive retroperitoneal hemorrhage owing to a ruptured adrenal cyst

We report a rare case of massive retroperitoneal hemorrhage owing to rupture of an adrenal cyst after blunt abdominal trauma. A large retroperitoneal hematoma was evacuated and subtotal adrenalectomy was performed. Convalescence was uneventful. Histology revealed an endothelial-lined adrenal cyst suggesting a vascular or lymphatic etiology.