[Retrorectal hamartomatous cysts or "tail gut syndrome": a case report and review of the literature].

Retrorectal cyst hamartomas or so called tail gut syndrome are dystopic lesions, rarely reported in Literature, characterized by the presence of cysts lined by mucous-producing ciliated epithelium. The Authors report a case, recently observed and surgically treated, in a 55 year old male, hospitalized because of an abscess and fistula in the right buttock diagnosed to be a cyst hamartoma. The Literature is reviewed as well.