摘要
目的分析直肠神经内分泌肿瘤(NEN)的MRI表现,并探讨与病理分级的相关性。方法回顾性分析经病理证实的直肠NEN患者的临床、病理与盆腔MRI资料。在MRI图像上评估肿瘤位置、大小、肿瘤浸润深度、动脉期强化程度、盆腔内淋巴结有无转移等情况。病理分级参照WHO 2010年消化系统肿瘤分级标准。结果 33例直肠NEN中,病理分级G1级24例,G2级4例,G3级5例。G1～G2级肿瘤长径均<20 mm,G3级长径均>20 mm。G1级直肠NEN动脉期乏血供为主,而G2～G3级直肠NEC动脉期富血供为主,G1～G3级直肠NEN静脉期强化均较明显。盆腔内淋巴结转移8例,其中G1级2例,G2级3例, G3级3例。结论直肠NEN以G1级多见,肿瘤长径增加、动脉期强化程度增高、固有肌层受侵及盆腔内淋巴结肿大提示病理高级别可能。
Objective To analyze the MRI features of neuroendocrine neoplasm(NEN) and discuss the correlation with pathological grade. Methods The clinical,pathological and pelvic MRI data of patients with pathologically confirmed rectal neuroendocrine tumors were retrospectively analyzed. MRI assessment of tumor location,size,tumor infiltration depth,arterial phase enhancement,pelvic lymph node metastasis and other conditions were considered. Pathological grade refers to the WHO 2010 gastrointestinal system tumor grading standard. Results Among 33 cases of rectal NEN,there were 24 cases with grade G1,4 cases with G2 and 5 cases with G3. The longest diameters of G1-G2 tumors were all <20 mm,and the longest diameters of G3 grades were >20 mm. In arterial phase, G1 grade rectal NEN were principally non-hypervascular,while G2-G3 grade rectal NEC were mostly hypervascular;G1-G3 grade rectal NEN were all hypervascular in the venous phase. There were 8 cases of pelvic lymph node metastases,including 2 cases of G1,3 cases of G2,and 3 cases of G3. Conclusion Rectal NEN is more common in G1. The increase of tumor length,increase of arterial phase enhance-ment,invasion of muscularis propria,and enlargement of lymph nodes in pelvic cavity suggests that pathology may be of high grade.
作者
吕海娟
雍惠芳
董雪
孙继红
LV Haijuan;YONG Huifang;DONG Xue(Department of Radiology, Sir Run Run Shaw Hospital,Zhejiang University School of Medicine,310016,P.R.China)
出处
《临床放射学杂志》
CSCD
北大核心
2019年第5期852-856,共5页
Journal of Clinical Radiology
