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Vol.40 No.1 contents | Japanese/English |
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- Case Report -
A Case of Primary Adenosquamous Carcinoma of the Lung with a Rare Contralateral Metastatic Pattern
Masaya Tamura1, Yasuhiko Ohta1, Makoto Oda1, Yoh Watanabe1, Hiroshi Minato2, Akitaka Nonomura21First Department of Surgery, Kanazawa University School of Medicine, 2Department of Clinical Pathologyb, Kanazawa University School of Medicine
We report a rare case of adenosquamous carcinoma of the lung, in which the adenocarcinoma and squamous cell carcinoma component metastasized to the opposite lung independently of each other. In 75-year-old-man who was followed up after resection for colon cancer an abnormal shadow was pointed out on chest X-ray film. Chest CT showed an irregularly-shaped nodule in left S3, and two distinct nodules in S10 and S5. There was no other evidence of recurrence or metastasis. At first, video assisted thoracoscopical partial resection of the two nodules in the right lung was performed. The resected specimen from the right S5 revealed adenocarcinoma and that from S10 was squamous cell carcinoma. Secondly, left upper lobectomy was performed, and the tumor was pathologically diagnosed as adenosquamous carcinoma. Metastasis of the adenocarcinoma component was noted in the mediastinal and hilar lymph nodes. The adenocarcinoma and squamous cell carcinoma of the right lung were histologically similar to the adenocarcinoma and squamous cell carcinoma component of the adenosquamous carcinoma, respectively, and they were considered to be metastases of the adenosquamous carcinoma.
key words: Adenosquamous carcinoma of the lung, Metastasis to the contralateral lung
Received: November 1, 1999
Accepted: January 5, 2000
JJLC 40 (1): 57-61, 2000
