Abstract

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• Spontaneous retroperitoneal hematoma (SRH) is a rare, potentially lethal entity that can arise from a variety of etiologies. We present a case of SRH secondary to hemorrhage from the right inferior adrenal artery in a 22-year-old woman. The patient presented to the emergency room with significant right flank pain, and computed tomography (CT) demonstrated a large, right-sided retroperitoneal hematoma with no identifiable etiology. Renal angiography revealed active extravasation from the right inferior adrenal artery. The patient was definitively treated with endovascular coiling of the ruptured artery, and long term follow up demonstrated resolution of the retroperitoneal hematoma.