胃神经鞘瘤三期增强CT表现  

CT features of gastric schwannoma

作　　者：王文娜[1] 陈燕萍[2] 周倩静[1] 曾利泉[1] 周子来[1] 杨彬[1] 

机构地区：[1]广州军区广州总医院附属157医院放射科,广州510510 [2]南方医科大学南方医院影像中心,广州510515

出　　处：《影像诊断与介入放射学》2012年第3期191-194,共4页Diagnostic Imaging & Interventional Radiology

摘　　要：目的探讨胃神经鞘瘤的CT平扫及三期增强特征。方法回顾性分析5例经手术病理证实的胃神经鞘瘤的临床资料及CT资料,其中男2例,女3例,年龄36～55岁。5例均行平扫及增强扫描,其中4例行三期动态增强扫描,1例仅行动脉期增强扫描。结果 5例胃神经鞘瘤主体全部位于胃大弯侧,位于胃体3例,胃底、胃窦各1例。5例均表现为边界清晰的类圆形均质病灶,除1例病灶较小呈结节状外,其他4例均表现为团块状;表现为腔内生长者1例,腔外生长者2例,腔内、外同时生长者2例;2例肿瘤表面溃疡形成。5例均无胃周淋巴结转移及胃外浸润。CT动态增强扫描肿瘤平均CT值分别为50.25、68.00和81.67 HU,呈明显渐进强化。结论胃神经鞘瘤CT平扫及动态增强表现具有一定特点,对该疾病的诊断具有重要提示意义。Objective To assess the CT features of gastric schwannoma. Methods The clinical records and CT scans of 5 patients （2 men, 3 women ; age range ： 36-55 years） with histologically confirmed gastric schwannomas were reviewed. The patients underwent CT examination in the unenhanced （5 patients）, arterial （5）, venous （4） and equilibrium （4） phases. Results All of the gastric schwannomas were located along the greater curvature in the gastric body （3）, eardia （1） or antrum （1）. The tumors were well-defined oval homogenous masses with endophytic （1）, exophytie （2） or both endophytic and exophytic （2） growth patterns. Gastric surface ulcers were found in two of the tumors. None of the patients had peri-gastric lymph node metastasis or extra-gastric invasion. The tumors manifested progressive contrast enhancement with average CT densities of 50.25, 68.00 and 81.67 HU in the arterial, venous and equilibrium phases, respectively. Conclusion Gastric sehwannoma has characteristic tri-phasic contrast enhancement pattern, which may aid its diagnosis.

关 键 词：胃神经鞘瘤 增强扫描 体层摄影术 X线计算机 

分 类 号：R735.2[医药卫生—肿瘤]