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[Lung carcinomas with interstitial pneumonia; detection of lung cancers by CYFRA and selection of surgical procedure].

Interstitial pneumonia (IP) may occur with the chest radiographic abnormality at the bilateral, predominantly basal and subpleural area of the lower lobe. And the incidence of lung cancer are markedly increased among patients with IP. From 1993 to 2003, 15 cases (male 14, female 1; average age 65.9-year-old), who were complicated IP, underwent surgical treatment in our hospital. Concerning detective tumor markers of lung cancers with IP, CYFRA showed very high sensitivity (92.3%) for any type of carcinoma. There were no case of perioperative death, however, 3 cases occurred severe deterioration of IP within 1 month and 6 cases died of respiratory failure. The risk factors, which aggravated IP at the postoperative period, were administration of prednisolone or immunosuppressive drugs from pre-operation and resection of the relatively non-fibrotic and non-honeycomb lobe which was affected with cancer. If it is possible to prognosticate the postoperative deterioration of IP, segmentectomy should be considered.