title: Anal polyp caused by Schistosoma mansoni.
abstract: We describe a schistosomal polyp in the anus of a 24-year-old patient, born in Viçosa, State of Minas Gerais, and living in Belo Horizonte, State of Minas Gerais. From 8 to 13 years of age, he swam in the rivers that bathe Viçosa. The histopathological examination has shown a lesion, lined by a keratinized squamous epithelium, ulcerated, with granulomas, centered or not by Schistosoma mansoni egg, laid, in loco, by the female present in the vascular lumen of a vein of the hemorrhoidal plexus. There was also a diffuse, nonspecific inflammation in the dermis. The patient was treated with praziquantel. Four months after the treatment, sigmoidoscopy showed a normal rectal mucosa, and negative oogram and stool tests. Ultrasound of abdomen was normal.
authors.affiliation: Departamento de Anatomia Patológica e Medicina Legal, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. pedroraso29@gmail.com
authors.forename: Pedro
authors.initials: P
authors.lastname: Raso
authors.forename: Eliane Mansur
authors.initials: EM
authors.lastname: Sander
authors.forename: Leonardo Arruda Moraes
authors.initials: LA
authors.lastname: Raso
authors.forename: José de Souza
authors.initials: Jde S
authors.lastname: Andrade Filho
mesh_terms: D000818:Animals; D001004:Anus Diseases / Q000469:parasitology* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D011127:Polyps / Q000469:parasitology* / Q000473:pathology; D012550:Schistosoma mansoni / Q000302:isolation & purification*; D012555:Schistosomiasis mansoni / Q000150:complications*; D055815:Young Adult