We illustrate a case of an inflammatory myofibroblastic tumor (IMT) involving the urinary bladder in a 17–year–old woman with no previous surgical history and review the literature and differential diagnosis. Genitourinary inflammatory myofibroblastic tumor is a rare lesion and is characterized by fascicular arrangement of myofibroblasts admixed with inflammatory cells and  characteristic slit–like vessels. Urinary bladder IMT can be a diagnostic pitfall because of its overlapping histologic features that can mimic malignancy. Proper diagnosis requires histopathological examination in combination with an exhaustive immunohistochemical panel, alongwith demonstration of anaplastic lymphoma kinase overexpression (by immunohistochemistry or gene rearrangement studies), to distinguish IMT from its malignant mimics. We have provided economical and modified panel for diagnosis of IMT suitable for resource constraints countries.