Inflammatory Myofibroblastic Tumor of Genitourinary Tract Beyond Collecting System: A Rare Case Report With Literature Review

Inflammatory myofibroblastic tumor (IMT) rarely arises in genitourinary tract especially beyond collecting system, which determines the unspecific clinic symptoms and sometimes can mimic malignancy. Therefore, IMT's diagnosis may usually be a pitfall. This case report characterizes a 35-year-old woman with a history of lower quadrant lasting pain followed by fever. Furthermore, radiologic examinations revealed that there were 2 lesions located in left adrenal area and left renalis. Owing to the anatomic complexity, the surgical resection was not complete. The pathologic diagnosis of the lesions was IMT. Adjuvant nonsteroids anti-inflammatory drugs were administrated after the operation. The symptoms were controlled finally and no further growing lesion was observed during a 1-year follow-up. Inflammatory myofibroblastic tumor is rare in genitourinary tract beyond the collecting system. Diagnosis should be based on histopathology. Presently, the authors report this rare case with the aim to share the experience regarding differential diagnosis and therapy.