Idiopathic unilateral adrenal hemorrhage in an elderly patient.

We report the case of an 85-year-old woman who has been undergoing treatment for hypertension but has not received anticoagulation therapy. The patient was admitted to our hospital for the evaluation of a right adrenal tumor (size, 10 × 9 cm²). Preoperative contrast-enhanced computed tomography and magnetic resonance imaging findings were indicative of adrenal hemorrhage (AH). Laboratory data revealed mild anemia but no adrenal dysfunction. The final pathological diagnosis was simply idiopathic adrenal hematoma. There is no case report of exactly idiopathic AH over 80 years old. We report an unusual case of idiopathic unilateral adrenal hematoma in an elderly patient. It is important to distinguish this benign lesion from a neoplasm and to consider idiopathic AH in an adrenal tumor during differential diagnosis in elderly patients who have not received anticoagulation therapy or suffered from trauma.