title: Simultaneous pulmonary metastases from colon and prostate cancer to the same lobe.
abstract: 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.
authors.affiliation: Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. tonakamu@sis.seirei.or.jp.
authors.forename: Toru
authors.initials: T
authors.lastname: Nakamura
authors.affiliation: Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. white.crystal.t.6187@gmail.com.
authors.forename: Tomonari
authors.initials: T
authors.lastname: Oki
authors.affiliation: Department of Pathology, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. otsuki@sis.seirei.or.jp.
authors.forename: Yoshiro
authors.initials: Y
authors.lastname: Otsuki
authors.affiliation: Department of Urology, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. yonet@sis.seirei.or.jp.
authors.forename: Tatsuaki
authors.initials: T
authors.lastname: Yoneda
authors.affiliation: Departments of Colorectal Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. cobayasu@sis.seirei.or.jp.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Kobayashi
authors.affiliation: First Department of Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashiku, Hamamatsu, Shizuoka, Shizuoka, 431-3192, Japan. kfunai@hama-med.ac.jp.
authors.forename: Kazuhito
authors.initials: K
authors.lastname: Funai
authors.affiliation: Department of General Thoracic Surgery, Seirei Hamamatsu General Hospital, Sumiyoshi 2-12-12, Naka-ku, Hamamatsu, Shizuoka, Shizuoka, 430-8558, Japan. toyodas@sis.seirei.or.jp.
authors.forename: Futoru
authors.initials: F
authors.lastname: Toyoda
keywords: Colon cancer; Prostate cancer; Pulmonary metastases