Heterotopic Ossification of Rectal Adenocarcinoma: Report of a Case |
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Authors: | Toshifumi Matsumoto Takashi Masuda Masafumi Inomata Seigo Kitano Kenji Kashima Kohei Shibata Shinya Arinaga |
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Affiliation: | (1) Department of Surgery I, Oita Medical University, 1-1 Idaigaoka, Hasama-machi, Oita-gun, Oita, 879-5593, Japan;(2) Department of Pathology, Oita Medical University, 1-1 Idaigaoka, Hasama-machi, Oita-gun, Oita, 879-5593, Japan;(3) Takada Chuo Hospital, Oita, Japan |
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Abstract: | Heterotopic ossification of gastrointestinal tract tumors is rare. We report the case of a 67-year-old man with heterotopic ossification of a rectal adenocarcinoma. The patient presented with intermittent abdominal pain and frequent diarrhea, and colonoscopic examination showed a large polypoid tumor partially obstructing the rectal lumen. Abdominal computed tomography (CT) revealed a large tumor in the rectal lumen with calcified spots. We performed low anterior resection of the rectum, and histologic examination showed a well-differentiated adenocarcinoma with heterotopic ossification infiltrating the full thickness of the rectum. Local recurrence and liver metastases were found 2 months after surgery, and the patient died 3 months later. Such a rapidly progressive course of rectal adenocarcinoma with heterotopic ossification is very unusual. |
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Keywords: | Heterotopic ossification Rectum Calcified lesion |
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