[Perianal ulcers of tubercular origin. A report of 3 new cases].

The rate of patients with extrapulmonary tuberculosis has increased in the last years (about 5% of all cases), and displaying a wide spectrum of clinical manifestations. Among them, the anal localization is a rare occurrence (0.7%) according to available published data. During the last two years, we have diagnosed and treated three patients with perianal tuberculous lesions manifested by ulcers. All three were males, associated with active pulmonary tuberculosis, and one with intestinal involvement which required surgical treatment. Based on this experience, we have reviewed the different etiopathogenic, clinical, diagnostic and therapeutic manifestations of this picture, emphasizing the importance of suspicion, and its diagnostic easiness if the different infectious and inflammatory diseases at this level are taken into account.