Abstract：Objective: To explore the CT findings of primary colorectal neuroendocrine carcinomas(NECs), and to improve the imaging diagnosis of them. Methods: CT findings of 32 patients with primary colorectal NECs and 46 patients with colorectal adenocarcinoma confirmed by surgery and pathology were analyzed retrospectively. The differences of age, gender, tumor location, size of the lesion, the thickening pattern of the intestinal wall, the pattern of contrast-enhancement, the peri-intestinal invasion, the occurrence of intestinal obstruction and metastasis to other organs were compared between the two groups. Results: Compared with the colorectal adenocarcinoma group, patient of colorectal NECs group was younger(t=3.634, P<0.001). There were statistically significant differences of focal thickening, size of the lesion and contrast-enhancement(P<0.05). While in gender, lesion location, occurrence of intestinal obstruction, lymph node metastasis, or metastasis, there was no statistically significant difference(P>0.05). Conclusion: Primary colorectal NECs are often found in young patients. Their CT manifestations include a polypoid lesion and is characterized by significant contrast-enhancement. Significantly contrast-enhanced metastasis may occur in liver.
李振辉，张治平，董兴祥，杨光军，高德培，张大福. 结直肠原发神经内分泌癌的CT表现[J]. 中国临床医学影像杂志, 2017, 28(6): 430-433.
LI Zhen-hui, ZHANG Zhi-ping, DONG Xing-xiang, YANG Guang-jun, GAO De-pei, ZHANG Da-fu. CT features of colorectal neuroendocrine carcinomas. JOURNAL OF CHINA MEDICAL IMAGING, 2017, 28(6): 430-433.
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