We report a case of successfully resected rectal inflammatory myofibloblastic tumor (IMT) associated with intraabdominal hemorrhage. A 26-year-old man reporting acute abdominal pain and showing a large fluid collection in abdominal ultrasonography had 1,400 g of coagulation removed and the upper rectum with 2 bleeding nodular lesions resected, followed by an uneventfull postoperative course. The lesions, located in the submucosa to subserosa of the rectum, consisted of spindle cells having eosinophilic tapered cytoplasm and plump nuclei and nucleoli infiltrated by inflammatory cells. Frequent mitotic figures and hemorrhage were also noted. A review of the literature indicates that patients with intraabdominal IMTs usually evidence a mass, fever, and weight loss, whereas intraabdominal hemorrhage is extremely rare.
- Anaplastic lymphoma kinase
- Inflammatory myofibloblastic tumor
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