RESUMO
Vaginal cancer is rare and accounts for only 1 to 2% of all gynaecological malignancies. They arise as primary squamous cell cancers or are the result of extension from the cervix or vulva. Primary mucinous vaginal adenocarcinoma of intestinal-type is an extremely rare malignancy of unknown histogenesis with a diagnostic dilemma for the clinician and histopathologist. We presented the case of a 40-year-old Para 0+2 woman with the complaint of a mass in the vagina and recurrent vaginal bleeding who was evaluated and worked-up for examination under anaesthesia and biopsy of the vaginal mass. The histological examination revealed the unusual intestinal-type variant of adenocarcinoma of the vagina. Recognition of this rare entity is important, particularly to avoid the pitfall of misdiagnosing metastatic disease as primary vaginal cancer.