Author:
Nojima Hiroyuki,Seike Kazuhiro,Kosugi Chihiro,Shida Takashi,Koda Keiji,Oda Kenji,Kamata Shigeyuki,Ishikura Hiroshi,Miyazaki Masaru
Abstract
Abstract
Rectal neuroendocrine carcinoma is rare with poor prognosis. We report herein a case of advanced moderately differentiated neuroendocrine carcinoma of the rectum with relatively favorable prognosis treated by postoperative adjuvant chemoradiation therapy. A 58-year-old Japanese female was referred and colonofiberscopy revealed an easy-bleeding irregular tumor in the lower rectum, which was pathologically diagnosed as a neuroendocrine carcinoma. Surgical treatment consisted of abdominoperineal resection and lymph node dissection. The tumor invaded deeply into perirectal tissues, and 9 of 11 lymph node metastases were observed. Immunohistochemically, chromogranin A showed diffuse and strong staining, and the MIB-1 labeling index was 18.3 ± 5.6, supporting the high proliferation of the tumor. Some nucleus of the tumor showed positive staining for p21/WAF1. A total dose of 46 Gy of radiotherapy was delivered with 800 mg of daily oral doxifluridine. At 5 years post-surgery, the patient demonstrated no clinical evidence of intrapelvic recurrence or distant metastases.
Publisher
Springer Science and Business Media LLC
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