title: Colon metastasis 20 years after the removal of ovarian cancer: Report of a case.
abstract: This report describes the case of a patient who had undergone surgery to resect bilateral ovarian tumors and then presented with colon metastasis 20 years later. A 69-year-old woman was admitted to the hospital for a clinical survey. She had been operated on for bilateral ovarian cancer in 1987 and was treated by postoperative adjuvant chemotherapy. The patient's follow-up showed no abnormality until 2006. Colonoscopy revealed an elevated irregular lesion in the cecum. A biopsy of the lesion showed a group V, moderately differentiated adenocarcinoma. A right hemicolectomy with a partial resection of the ileum and a lymphadenectomy was performed. Immunohistochemical staining during the pathological diagnosis showed the lesion to be colon metastasis from a serous papillary adenocarcinoma of the ovary. Immunohistochemical staining was positive for cytokeratin 7, carbohydrate antigen (CA)-125, and estrogen receptors, and negative for cytokeratin 20, carcinoembryonic antigen, and CA19-9. The use of immunohistochemistry demonstrated the tumor to be of ovarian origin.
authors.affiliation: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Shibahara
authors.forename: Kazuya
authors.initials: K
authors.lastname: Endo
authors.forename: Tetuo
authors.initials: T
authors.lastname: Ikeda
authors.forename: Hisanobu
authors.initials: H
authors.lastname: Sakata
authors.forename: Noriaki
authors.initials: N
authors.lastname: Sadanaga
authors.forename: Masaru
authors.initials: M
authors.lastname: Morita
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Kakeji
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Maehara
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000556:secondary* / Q000601:surgery; D000368:Aged; D001706:Biopsy; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000556:secondary* / Q000601:surgery; D003113:Colonoscopy; D005260:Female; D006801:Humans; D010051:Ovarian Neoplasms / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed