Anal polyp caused by Schistosoma mansoni

• Published in: Revista da Sociedade Brasileira de Medicina Tropical
• Main Authors: Pedro Raso, Eliane Mansur Sander, Leonardo Arruda Moraes Raso, José de Souza Andrade Filho
• Format: Article in Journal/Newspaper
• Language: English
• Published: Sociedade Brasileira de Medicina Tropical (SBMT) 2013
• Subjects: Schistosoma mansoni; Anal polyp; Anus; Schistosomiasis; Arctic medicine. Tropical medicine; RC955-962; Arctic
• Online Access: https://doi.org/10.1590/0037-8682-1681-2013; https://doaj.org/article/c003224f458e452abd3d08be6fd2dacf

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.