title: Primary vaginal adenocarcinoma of intestinal type arising from a tubulovillous adenoma.
abstract: Enteric or intestinal-type neoplasms of the vagina are extremely rare. The present report describes a 55-year-old woman who presented with a 6-week history of postmenopausal bleeding. On clinical examination, a lesion on the posterior vaginal wall was noticed. Rectovaginal examination suggested a tumor in the rectovaginal septum. Biopsy revealed an adenocarcinoma of the intestinal type, with a small remnant of a villous adenoma. The histologic interpretation pointed in the direction of a metastatic gastrointestinal tumor; yet, clinical examination, rectoscopy, colonoscopy, magnetic resonance imaging (MRI) of the abdomen, and positron emission tomography (PET) scanning excluded this possibility. This led to the conclusion that the lesion was a primary intestinal-type adenocarcinoma of the vagina that had arisen from a vaginal villous adenoma. It is important to be aware of this tumor type and to distinguish them from metastatic colorectal adenocarcinoma in order to plan appropriate treatment.
authors.affiliation: Departments of Gynecology and Gynecologic Oncology and Pathology, University Hospital Antwerpen (UZA), Wilrijkstraat 10, 2650 Edegem, Antwerp, Belgium. wiebren.tjalma@uza.be
authors.forename: W A A
authors.initials: WA
authors.lastname: Tjalma
authors.forename: C G A
authors.initials: CG
authors.lastname: Colpaert
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis*; D018253:Adenoma, Villous / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007414:Intestinal Neoplasms / Q000175:diagnosis; D008875:Middle Aged; D014625:Vaginal Neoplasms / Q000175:diagnosis*