[Perforations in free peritoneum in Crohn disease].

Among Crohn's disease complications, perforation in free peritoneum is extremely rare, this being due to the disease's anatomopathological characteristics. Three cases of free perforation are described: one of the colon and two of the intestine. On the basis of the results of surgical treatment, straightforward suture of the perforation is contraindicated. The most rational treatment, when possible, is resection with immediate or deferred reconstruction.