EDITORIAL COMMENT": We accepted this case for publication since it seems to demonstrate conclusively that a clip on the Fallopian tube can produce persistent pain without associated pathology such as infection, adhesions or damage to other organs. Why then is this complication so rare? Why was the postoperative pain unilateral in this woman? Can readers provide the answer to this riddle? One of the reviewers made the comment that this complication is not rare only under-reported and that he has heard a number of anecdotal reports of cases where Filshie clips have been removed and the patient's pain has resolved. This comment from the reviewer is of course anecdotall.