Introduction Mesenteric fibromatosis-desmoid tumor of mesentery is a rare benign soft tissue tumor of mesentery. On CT, it mimics gastrointestinal stromal tumor (GIST). Case Report A 44-year-old female with small intestinal mass, preoperatively diagnosed radiologically and pathologically as GIST. Conclusion Mesenteric fibromatosis is a rare tumor often mistaken for GIST. Histopathology and immunohistochemistry is the key as management of both the tumors differs.

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Inflammatory myofibroblastic tumor (IMT) is a rare neoplasm with unknown malignant potential that has been described in most organ systems. We herein present a case of a young female who presented with macroscopic hematuria. An IMT of the urinary bladder which was not suspected after clinical, radiological and surgical work-up was diagnosed microscopically and confirmed by immunohistochemistry. A close clinical follow-up is recommended because of the unknown biological behavior of this tumor. A brief review of literature is also presented here.

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