摘要
目的研究肠道神经鞘瘤(intestinal schwannoma,IS)的影像学表现,以提高对该病的诊断水平。方法回顾性分析14例经手术病理证实的IS患者的临床和影像学资料,评估包括肿瘤的部位、大小、形态、性质、生长方式、CT密度、MRI信号、PET/CT代谢等特征。结果14例IS中,病灶位于十二指肠3例,盲肠2例,结肠8例,直肠1例。病灶均为类圆形或椭圆形,最大径平均(2.4±1.1)cm。病灶为实性13例,肠腔外生长型10例,囊变1例,黏液变性1例。9例病变肠周可见慢性炎性淋巴结,其中6例淋巴结短径>5 mm。14例IS的CT平扫均为低密度,增强后均为渐进性强化,其中轻度强化1例,中度强化2例,明显强化11例。2例IS在MRI上均表现为T1WI低信号,T2WI稍高信号,DWI明显高信号,增强后明显渐进性强化。2例IS在^(18)F-FDG-PET/CT上均表现为高代谢,病灶SUVmax分别为9.4和8.8。结论IS的影像学表现具有一定的特征性,主要表现为肠道黏膜下来源的实质性结节或肿块,密度或信号均匀,增强后明显渐进性强化,^(18)F-FDG-PET/CT上肿瘤明显高代谢,灶周常见均质稍大淋巴结。
Objective To investigate the imaging features of intestinal schwannoma(IS)in order to improve the diagnostic ability of the disease.Methods The clinical and imaging data of 14 patients with surgically and pathologically confirmed IS were retrospectively analyzed,including the location,size,morphology,nature,growth pattern,CT density,MRI signal,PET/CT metabolism and other characteristics of the tumors.Results Of the 14 IS cases,the lesions of 3 cases were located in the duodenum,2 cases in the cecum,8 cases in the colon and 1 case in the rectum.The lesions were all round or oval,with an average maximum diameter of(2.4±1.1)cm.The lesions were solid in 13 cases,extraluminal growth in 10 cases,cystic degeneration in 1 case and myxoid degeneration in 1 case.Chronic inflammatory lymph nodes were seen around the diseased intestines in 9 cases,and the short diameter of lymph nodes was greater than 5 mm in 6 cases.All 14 cases of IS showed low attenuation on plain CT scan,and progressive enhancement after contrast injection,including 1 case of mild enhancement,2 cases of moderate enhancement,and 11 cases of obvious enhancement.Two cases of IS showed low signal intensity on T1WI,slightly high signal intensity on T2WI,significantly high signal intensity on DWI,and obvious progressive enhancement after contrast injection on MRI.Two cases of IS showed high metabolism on^(18)F-FDG-PET/CT,and the SUVmax was 9.4 and 8.8,respectively.Conclusion The imaging findings of IS were characteristic to a certain extent.They mainly manifested as solid nodules or masses derived from the intestinal submucosa,with uniform attenuation or signal intensity,obvious progressive enhancement after contrast injection,obvious hypermetabolism on^(18)F-FDG-PET/CT,and slightly larger homogeneous lymph nodes were common around the lesions.
作者
于泳
龚沈初
王睿婷
侯凯
陆秀良
刘立恒
周建军
丁玉芹
YU Yong;GONG Shen-chu;WANG Rui-ting;HOU Kai;LU Xiu-liang;LIU Li-heng;ZHOU Jian-jun;DING Yu-qin(Department of Radiology,the Second Affiliated Hospital of Nantong University/Nantong First People's Hospital,Nantong 226001,Jiangsu Province,China;Department of Radiology,Zhongshan Hospital,Fudan University,Shanghai 200032,China;Shanghai Institute of Medical Imaging,Shanghai 200032,China;Department of Radiology,Zhongshan Hospital(Xiamen Branch),Fudan University,Xiamen 361015,Fujian Province,China)
出处
《复旦学报（医学版）》
CAS
CSCD
北大核心
2024年第1期62-68,共7页
Fudan University Journal of Medical Sciences
基金
国家自然科学基金(82202285)
上海市自然科学基金(21ZR1459700)。
