Simultaneous pulmonary metastases from colon and prostate cancer to the same lobe.

Simultaneous pulmonary metastases from different primary tumors to the same lobe are extremely rare, and we herein report the case. Surgical specimen of the pulmonary metastasis from colon cancer contained two additional nodules that were confirmed as metastases from prostate cancer.

Pulmonary metastasis from prostate cancer rarely forms nodules, and there is a discrepancy in the incidence of pulmonary metastases between autopsy and clinical findings. This case suggests that different malignant tumors could simultaneously metastasize to the same pulmonary lobe, and more pulmonary metastases from prostate cancer might exist than expected.

Surgical case reports. 2015 Mar 31 [Epub]

Toru Nakamura, Tomonari Oki, Yoshiro Otsuki, Tatsuaki Yoneda, Yasuyuki Kobayashi, Kazuhito Funai, Futoru Toyoda

Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. Department of Pathology, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. Department of Urology, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. Departments of Colorectal Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. First Department of Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashiku, Hamamatsu, Shizuoka, Shizuoka, 431-3192, Japan.  Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan.