[Leiomyoma of the anal canal. A case]

We report a case of leiomyoma of the anal canal, a very rare benign tumour, which was followed up for more than 7 years. With only one exception (10 years), the 14 cases previously published were watched during a short period. This tumour is characterized by the lack of absolute pathological criteria of benignity, even in the total of operative specimens examined, and by a tendency to recurrence, perhaps due to an insufficient local excision. This simple surgical operation seems to be justified, provided the patient remains under close supervision during 5 to 10 years.