Drain site evisceration of the appendix: report of a case.

We report herein the case of a patient in whom evisceration of the appendix occurred at the site of a drain placed in the right lower quadrant of the abdomen. Because the appendix had become adhered to the side-hole of the drain with an external diameter of 11 mm, it was pulled out attached to the drain. Consequently, the stab wound incision of the drain was extended and an appendectomy was performed under general anesthesia. Thus, drains with a small diameter should be used whenever possible, and side-holes not having any influence on the drainage should be avoided.