Surgical analysis for metastatic lung tumor originating from renal cell carcinoma
Okubo, T.; Okayasu, T.; Hasegawa, N.; Osaka, Y.; Tanabe, T.
Nihon Kyobu Geka Gakkai 41(4): 614-618
1993
ISSN/ISBN: 0369-4739 PMID: 8515161 Document Number: 420449
In this study, we evaluated 16 surgically treated cases of metastatic lung tumors originating from renal cell carcinoma. Ten males and 6 females with ages ranging from 31 years to 74 years (average 60.8 years) were examined. Five cases had solitary metastasis, 4 had ipsilateral multiple metastasis, and 7 had bilateral metastasis. The average number of lung metastatic legion was 3.3. Disease free intervals ranged from 0 to 120 months (average 22.6 months). Tumor doubling time calculated in only 8 cases, ranged from 36 to 510 days (average 126 days). In 8 cases, tumor doubling time could not be calculated because tumor growth was too slow. Partial resection or segmental resection was performed in 14 cases, 8 with ipsilateral and 6 with bilateral lung metastasis. Lobectomy was performed in only two cases. Five year survival rate was 43% as determined by the Kaplan-Meier method. We believe that such cases possessing a slow tumor growth rate have a better survival rate.