title: Concurrence of primary malignant melanoma of the esophagus with adenocarcinoma of sigmoid colon and villous adenoma of cecum: a case presentation.
abstract: In this paper, a 74 years old male patient with complaints of dysphagia and hemoptysis is presented. Endoscopy revealed black colored mass protruding to the lumen at distal esophagus. Diagnosis of malignant melanoma was confirmed with biopsy. Examinations for staging purposes revealed masses at sigmoid colon and cecum. Biopsy was performed with colonoscopy. The mass at the sigmoid colon was diagnosed as adenocarcinoma and the mass at the cecum was diagnosed as villous adenoma. Although the treatment strategy is not straightforward, surgical treatment is the most important step. For this reason, patient underwent three field esophagectomy, anterior resection and right hemicolectomy in the first place. The patient is currently receiving his adjuvant chemotherapy and immunotherapy at postoperative 6th month. According to our knowledge, concurrence of these tumors with two different origins has only been reported in 1 patient before. Our patient has the significance of being the second reported case.
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Kursat
authors.initials: K
authors.lastname: Dikmen
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Zafer
authors.initials: Z
authors.lastname: Ferahkose
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Barıs
authors.initials: B
authors.lastname: Turhan
authors.affiliation: Department of Pathology, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Gizem Toker
authors.initials: GT
authors.lastname: Caliskan
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Hasan
authors.initials: H
authors.lastname: Bostanci
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Cagri
authors.initials: C
authors.lastname: Buyukkasap
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Selim
authors.initials: S
authors.lastname: Keceoglu
authors.affiliation: Department of General Surgery, Gazi University Medical Faculty Besevler, Ankara, Turkey.
authors.forename: Bulent
authors.initials: B
authors.lastname: Aytac
keywords: Primary esophagus malignant melanoma; sigmoid colon cancer