Transitional cell carcinoma of the bladder presenting after blunt abdominal trauma: a very rare occurrence in childhood.

Tumors of the urinary bladder are rare in children and nearly all of them are of mesodermal in origin. Herein we report a case of transitional cell carcinoma of the urinary bladder in a 13-year-old boy who presented after blunt abdominal trauma. It should be remembered that hematuria could develop after blunt abdominal trauma in children, for reasons other than the trauma itself (e.g. tumors of the urinary tract).