[Pneumatosis cystoides of the colon: knowing how to recognize it. Apropos of 8 cases].

Eight cases of pneumatosis cystoides intestinalis (PCI) affecting the descending colon at first misdiagnosed in seven of them, are reported. The mechanism of cyst formation remains unclear but certain specific endoscopic and X-ray findings should help in differentiating PCI from other intramural tumors, i.e. polyposis. Diagnostic investigations and management approaches are described. No treatment is necessary in most instances because of the benign nature of PCI.