An autopsy case of lung cancer metastasizing to renal cell cancer and rectal villous adenoma
Takiguchi, Y.; Kasamatsu, N.; Hashizume, I.; Hanzawa, S.; Sasaki, K.; Baba, M.; Okamoto, K.; Ozawa, A.
Nihon Kyobu Shikkan Gakkai Zasshi 32(12): 1204-1208
1994
ISSN/ISBN: 0301-1542 PMID: 7853780 Document Number: 424243
A 67-year-old woman with bloody stool was admitted to our hospital. Chest radiograph on admission showed a tumor shadow in the right lower lung field. Lung adenocarcinoma of right S6 and villous adenoma of the rectum were detected. Although she was treated with chemotherapy and radiotherapy, she died of respiratory failure. At autopsy, moderately differentiated adenocarcinoma of the right lung, renal cell carcinoma, and villous adenoma of the rectum were confirmed. Lung adenocarcinomas were detected in the focus of the renal cell carcinoma and in the villous adenoma. Metastasis of a cancer into another coexisting tumor in the same individual is extremely rare, and a satisfactory explanation for this phenomenon has not yet been offered.