title: [Retrovesical hydatic cyst with spontaneous fistulization to the sigmoid].
mesh_terms: D000328:Adult; D004443:Echinococcosis / Q000150:complications*; D004444:Echinococcosis, Hepatic / Q000150:complications; D006801:Humans; D007412:Intestinal Fistula / Q000209:etiology*; D008297:Male; D012810:Sigmoid Diseases / Q000209:etiology*; D001745:Urinary Bladder Diseases / Q000150:complications*; D001747:Urinary Bladder Fistula / Q000209:etiology
vernacular_title: Quiste hidatídico retrovesical con fistulización espontánea a sigma.