Abstract
A 68-year-old woman was admitted to the Peking Union Medical College Hospital with a 6-week history of fever of undetermined origin. The computed tomography scan revealed a space-occupying lesion in the ascending colon and colonic endoscopy revealed a protrusive lesion in the initial segment of the ascending colon, occupying 3/5 of the lumen. Pathological examination of a biopsy specimen revealed malignant fibrous histiocytoma (MFH). The patient then underwent a laparotomy for right hemicolectomy and en bloc lymph node dissection. The histopathological examination confirmed the diagnosis of MFH and administration of adjuvant radiotherapy was decided. MFH is a high-grade sarcoma that rarely arises in the alimentary tract. To the best of our knowledge, there has only been one case of primary colorectal MFH treated by radiotherapy recorded to date, which makes our case the second trial. We herein present a case of MFH in the ascending colon and a review of previous case reports of patients presenting with this unusual type of MFH.
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