2018 Volume 38 Issue 6 Pages 1051-1054
A 41-year-old woman was admitted to our hospital with upper abdominal pain and repeated high fever. The examination showed a transverse colon tumor measuring 10 cm, and a marked inflammatory response. We suspected that this tumor was a gastrointestinal mesenchymal tumor with abscess formation. We performed a transverse colon resection with D3 dissection and a partial gastrectomy. The marked inflammatory response improved quickly after the operation, and the patient was discharged without postoperative complications. The histopathological examination revealed spindle-shaped tumor cells within the colon wall and an immunohistochemical examination revealed αSMA (+), desmin (+), C-kit (−), CD34 (−), DOG-1 (−). A leiomyosarcoma of the transverse colon was diagnosed based on the results of the immunohistochemical examination. The patient was followed for 18 months postoperatively without any recurrence.
