腎細胞癌の早期発見におけるCTおよびUSの意義について

概要

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1962年8月より22年間に腎細胞癌と診断した83例を集計し,臨床統計的観察を行ない,腹部診断にCTおよびUSが導入された前後について検討した.1)CTやUSが導入された1980年以後,腎細胞癌の症例が増加しており,とくにlow stageの症例の占める割合が増加している.2)CTやUS導入以後,他科疾患にて精査中に発見された腎細胞癌を11例経験した.そのうち,尿路外症状を含めた腎細胞癌に関する症状がまったくみられないincidental tumorが6例みられ,うち5例はlow stageの早期癌で,早期腎摘出術を施行しえたEighty-three cases of renal cell carcinomas admitted to Nara Medical University and its related hospitals from August, 1962 through July, 1984 were reviewed. We have been using computed tomography (CT) and ultrasonography (US) for early detection of renal cell carcinomas since 1980. Thereafter the number of patients with low stage renal cell carcinoma was significantly increased. Furthermore 6 carcinomas were incidentally detected by CT and/or US examination for checkup of other diseases. We believe that CT and US may be valuable as a screening modality for early detection of renal cell carcinoma.