A Case of Squamous Cell Lung Cancer after Treating with Radiation for Small Cell Lung Cancer

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  • 肺小細胞癌の放射線療法後に発生した扁平上皮癌の 1 例

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Abstract

A 77-year-old man was admitted due to an abnormal shadow on a chest X-ray film in September 1993. Small cell lung cancer was diagnosed by transbronchial lung biopsy of left S^3. Because of his pulmonary and renal dysfunction, he received only 40Gy irradiation alone, and the tumor shadow disappeared. After 38 months' observation, a new nodular shadow was detected in the left upper lung field in March 1997. A tumor was found in left B^3 by bronchoscopy, and biopsy revealed squamous cell carcinoma. Because of his advanced age and hypoxia, he has had no active treatment. This was a rare case of small cell lung cancer with long term survival, treated only by radiation, in which a different histologic type of carcinoma appeared in the same radiation field.

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