Inflammatory (pseudosarcomatous) myofibroblastic tumor of the bladder.

We present a case of inflammatory (pseudosarcomatous) myofibroblastic tumor of the bladder in a child, along with a review of the literature. The benign nature of this rare disorder needs to be recognized so that superfluous radical therapy can be avoided. The clinical features and microscopic, ultrastructural, and immunohistochemical characteristics that help to identify this entity are described. To date, 72 such cases involving the bladder have been reported in the literature including the present one.