空洞性肺癌の臨床的検討

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  • Clinical Features of Cavitary Lung Cancer.

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The clinical features of primary lung cancers with cavitation were studied. Cavitation was observed in 48 cases (6%) out of 794 patients with lung cancer histologically diagnosed in our hospital from April 1980 to March 1992. There were 39 males and 9 females, with an average age of 67.9 years old. Epidermoid carcinoma was most common and occupied 63%(30 cases), adenocarcinoma was 31%(15 cases), large cell carcinoma was 4%(2 cases), and other carcinoma was 2%(1 case). The overall incidence of cavity formation was 6%, 11% in epidermoid carcinoma, 6% in large cell carcinoma, and 5% in adenocarcinoma. Cavitation was not found in any of the 140 small cell carcinoma cases. The diagnostic value of sputum and cytological specimens obtained from fiberoptic bronchoscopy was similar in cavitary and non-cavitary lung cancer. There was a correlation between tumor size and cavity formation in epidermoid carcinoma, but it could not be noted in adenocarcinoma. The ratio of stage N cases was significantly lower in cavitary lung cancer (25%), compared with non-cavitary lung cancer (51%). There were no definite radiological findings indicating the histological subtype of cavitary lung cancer. However, the cavity of epidermoid carcinoma had a tendency to have an irregular inner wall (80%). Six patients with cavitary lung cancer died of massive hemoptysis. All cases showed irregular-walled cavitation before their episodes of hemoptysis.

収録刊行物

  • 肺癌

    肺癌 34 (3), 355-361, 1994

    特定非営利活動法人 日本肺癌学会

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