Damage to the bladder during inguinal hernia repair is possible especi
ally if the bladder or a bladder diverticulum is involved in the herni
a sac. Unrecognized injury to the bladder can lead to late complicatio
ns. We report a case of pseudotumor in a bladder diverticulum due to l
ong-term retention of a misplaced suture. The literature on bladder in
jury after inguinal herniorrhaphy and on pseudotumor formation is brie
fly reviewed. It is important to be aware of a history of inguinal sur
gery and to obtain definitive histologic evidence of malignancy prior
to making the diagnosis of bladder carcinoma. This will avoid unnecess
ary radical surgery, chemotherapy, or radiation therapy. (C) 1997, Els
evier Science Inc. All rights reserved.