Objective To explore the value of CT in digestive system schwannomas,in order to improve the diagnostic accuracy and recognition of the disease. Methods Imaging features of 14 cases of patients with digestive system schwannomas confirmed by surgical pathology were analyzed retrospectively and compared with pathological findings. Results All patients had solitary lesion. The average diameter of lesions was(3.8±1.8)cm. 6 of 14 cases were located in stomach(2 in fundus,3 in the lesser curvature and 1 in the greater curvature),3 in pancreatic head,2 in rectum and 1 in jejunum,cecum,sigmoid colon respectively. All of the lesions had well-defined boundaries. 12 tumors were similar round or oval in shape,1 was irregular and 1 was lobulated showed on CT imaging. The tumors manifested obvious progressive reinforcement with average CT densities of(43.21±4.3) HU、(62.71±5.8)HU、(82.78±7.9)HU in the plain,arterial and venous phases,respectively. Surface ulcers were found in two of the tumors and the calcification was seen in one case. Conclusion The CT manifestations of digestive system schwannomas have certain features,but the specificity of these characteristics is still low,and the final diagnosis should be depended on pathology.%目的 探讨消化系统神经鞘瘤的CT表现及其诊断价值.方法 回顾分析14例经手术、病理证实的消化系统神经鞘瘤患者的CT特征,并与病理结果进行对照.结果 14例患者均为单发,病灶直径平均为(3.8±1.8)cm,位于胃部6例(胃底部2例、胃小弯侧3例、胃大弯侧1例),胰腺3例,直肠2例,空肠、盲肠、乙状结肠各1例.CT表现肿瘤主要呈类圆形、椭圆形,其中1例形态不规则,1例边缘呈分叶状,边界清晰,动态增强CT值分别为(43.21±4.3)HU、(62.71±5.8)HU、(82.78±7.9)HU,肿瘤呈明显渐进性强化,2例边缘出现溃疡,1例边缘见钙化.结论 消化系统神经鞘瘤CT表现具有一定特征性,但特异性不高,最后诊断常需依靠病理证实.
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