A Case of Rectal Inflammatory Myofibroblastic Tumor associated with Intraabdominal Hemorrhage

Takayuki Iwamoto, Kazuya Miyoshi, Shinya Ohtsuka, Tatsuhiko Sakata, Toshihide Ohsaki and Sadanori Fuchimoto

Department of Surgery, Fukuyama National Hospital

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.

Key words
inflammatory myofibloblastic tumor, rectum, anaplastic lymphoma kinase

Reprint requests
Takayuki Iwamoto Department of Surgery, Fukuyama National Hospital 4-14-17 Okinogami-cho, Fukuyama, 720-8520 JAPAN

Accepted
June 25, 2003

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