食道癌を原発とする転移性腎腫瘍の2例

Abstract

症例1:57歳男.食道癌で胸部食道全摘術を行い, 2ヵ月後CTで上右腎に楔状のlow density areaが出現, 増大した為, 経腰的単純右摘出術を行った.組織学的にsquamous cell carcinomaであり食道癌の右腎転移と診断された.3ヵ月後の現在生存中である.症例2:57歳男.胸部大動脈, 左房への直接浸潤を伴った食道癌の為, 放射線照射を行い1年6ヵ月後血尿, 右側腹部痛を訴え, CTで右腎に楔状のlow density areaが出現, 増大, 下大静脈内腫瘍塞栓を認め, 経腹的右腎摘出術, 下大静脈内腫瘍塞栓摘出術を施行, squamous cell carcinomaで食道癌よりの転移と考えられ, 2ヵ月後死亡した

We report 2 cases of esophageal cancer metastatic to the kidney. The first case was in a 57-year-old man who complained of severe right flank pain. He had underwent an operation for esophageal cancer 2 months previously. A computerized tomography (CT) scan revealed a wedge-shaped, low-density mass in the right kidney. Right nephrectomy revealed squamous cell carcinoma. He has remained free of recurrence 3 months postoperatively. The second case was in a 57-year-old man with esophageal cancer treated by radiation therapy. Severe right flank pain and gross hematuria appeared after 1 year. A CT scan showed a wedge-shaped, low-density tumor in the right kidney accompanied with a tumor thrombus in the inferior vena cava. Right nephrectomy as well as resection of the thrombus were performed. Pathological diagnosis was squamous cell carcinoma. He died of cancer 2 months postoperatively.