胃肠道神经鞘瘤的螺旋CT表现  

The features of gastrointestinal neurilemmoma on helical CT

作　　者：邢伟[1] 谭华桥[2] 俞胜男[1] 许金梅[1] 邱建国[1] 吴小凤[1] 孙益芳[1] 史新平[1] 

机构地区：[1]苏州大学附属第三医院放射科,常州213003 [2]上海交通大学附属第六人民医院放射科

出　　处：《中华放射学杂志》2007年第4期374-377,共4页Chinese Journal of Radiology

摘　　要：目的研究胃肠道神经鞘瘤的螺旋 CT 表现,提高对该病的认识诊断能力。方法回顾性分析12例经手术病理证实的胃肠道神经鞘瘤的资料,分析其临床及螺旋 CT 表现。评估内容包括肿瘤的部位、大小、形态、边缘、生长方式、增强模式、增强程度、肿瘤被覆黏膜面溃疡情况。结果平扫所有肿块均位于胃肠道壁内,密度略低于肌肉。6例向腔外生长,3例向腔内生长,3例同时向腔内外生长。10例肿瘤呈圆形、卵圆形或扁圆形,边界清晰;2例略呈分叶状,边缘不清。3例可见肿瘤部位胃肠道黏膜面有浅小溃疡形成。增强扫描,所有肿瘤均呈匀质实性肿块;10例动脉期无明显强化,门静脉期呈中度强化;2例动脉期轻度强化,而门静脉期明显强化。结论胃肠道神经鞘瘤 CT 表现具有一定特征性,CT 上多表现为圆形、卵圆形或扁圆形的匀质实性肿块,边缘清晰,缓慢且均匀中度强化。Objective To investigative CT findings ot gastrointestinal neurilemmoma, and to improve the recognition and diagnosis ability of the disesase. Methods Twelve cases of gastrointestinal neurilemmoma proven surgically and pathologically were included. The unenhanced CT and double phase enhanced CT were performed in all patients. The clinical feature and CT findings with regard to the location, size, contour, margin, growth type, contrast enhancement pattern, contrast enhanced degree, presence or absence of ulcer were retrospectively reviewed by two experienced radiologists. Results On unenhanced CT, all the patients present masses with homogeneous attenuation in the wall of gastrointestinal tract, compared with muscle. Three of the gastric neurilemmoma showed endoluminal growth pattern, and 6 had a predominantly exophytic growth pattern, the tumor had both endoluminal and exophytic growth pattern in 3 cases. The tumors were round or oval with distinct margin in 10 of 12 gastrointestinal neurilemmoma, and lobulated with indistinct margin in 2 cases. Three of the gastric neurilemmoma had ulceration. On contrastenhanced CT, all the tumors showed homogeneously solid mass. No obvious enhancement on the arterial phase showed moderate enhancement on portal vein phase in 10 cases, 2 of gastrointestinal nettrilemmoma which manifested mild enhancement on the arterial phase showed obvious enhancement on portal vein phase. Conclusion CT findings of most gastrointestinal neurilemmoma have characterstic, which appeared as round or oval, distinct margin,and homogeneously solid tumors, slow but fairly uniform and moderate enhancement throughout the mass.

关 键 词：胃肠道 神经鞘瘤 体层摄影术 X线计算机 

分 类 号：R735[医药卫生—肿瘤]