Inflammatory pseudotumor arising from the right ventricular outflow tract causing pulmonary stenosis.

Inflammatory pseudotumor (also known as inflammatory myofibroblastic tumor) is an uncommon spindle cell lesion that was initially recognized in the lung and is now known to occur in virtually every major organ of the body. We report a case of a seven-year-old male who had an inflammatory pseudotumor of the right ventricular outflow tract involving the pulmonary valve causing pulmonary stenosis.