Hernia mesh migration into bladder presenting as malignancy: potential source of diagnostic errors.

Hernia mesh erosion into bladder is a rare complication of hernioplasty. We report two cases of patients complained of recurrent frank hematuria; based on clinical and radiological evaluation, malignant tumor was considered. Cystoscopy and open surgery were performed subsequently which found the migration of mesh into bladder. History reviewed showed that they underwent hernioplasty 3 and 4 years ago, respectively.