進行性に増大した無症候性副腎血腫の1例

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66歳女.腹部CTで左副腎に65mm大で辺縁整,類円形の腫瘤を認め,腫瘤の中心部・辺縁部に造影効果がみられた.又,一部に石灰化がみられた.腹部MRIでは,T1強調画像にて腫瘤腹側に低信号,腫瘤背側に高信号を示し,T2強調画像にて不均一な高信号を示し,増大傾向を示した.内分泌非活性腺腫が疑われ,経腹式右副腎摘除術を施行した.摘出標本は大きさ60×55×40mm,85g,表面平滑な腫瘤であり,割面は中央部で黄色～淡褐色,周辺部では暗褐色を呈した.又,一部に石灰化,小嚢胞を認めた.術後経過良好にて術後7日目に退院したWe report a case of asymptomatic adrenal hematoma that enlarged during a 3-year follow-up. A 66-year-old woman exhibited a 4 cm right adrenal mass, incidentally discovered by computed tomography of abdomen, which progressively enlarged to 6 cm in diameter during the 3 years. The patient underwent right adrenalectomy with a diagnosis of a suspected non-functional adrenal tumor. Histopathological examination indicated adrenal hematoma without tumor cells. The patient had received aspirin medication for 4 years, and it is possible that the enlargement of the mass might have been due to aspirin medication.