[Pitfalls of mechanical circular anastomoses].

To the list of pitfalls of circular mechanical anastomoses the authors add another type of incident involving catching of an intestinal fold. While the pitfalls recently published by M. Adloff include occlusive stapling, those encountered by the authors make mechanical stapling impossible. Two diagrams illustrate the mechanism of failure of circular mechanical anastomoses and suggest an easy way of avoiding this pitfall.