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目的:分析小肠间质瘤(GIST)的CT表现特点,提高对本病的认识。方法:回顾性分析18例我院经手术病理证实的小肠间质瘤的CT表现,所有病例术前均行CT平扫及增强扫描。结果:18例小肠间质瘤中,原发于十二指肠2例,空肠7例,回肠9例;恶性14例,良性2例,交界性2例;CT表现为与肠壁密切相关的软组织肿块,病灶一般境界清晰;良性者,多数小于3cm,密度较均匀;恶性者,多数大于5cm,密度多不均匀,肿块内可见出血囊变坏死区。肿块多为富血供,增强后,肿块的实质部分强化显著,囊变坏死区不强化。结论:小肠间质瘤的CT表现具有一定特点,CT能够准确显示GIST的部位、形态、大小及强化特点,对于术前定位、定性和肿瘤分级具有重要价值。
Objective: To analyze the CT features of intestinal stromal tumor (GIST) and to improve the understanding of the disease. Methods: The CT findings of 18 cases of small intestinal stromal tumors confirmed by surgery and pathology in our hospital were retrospectively analyzed. CT scan and enhanced scan were performed in all cases before operation. Results: Among the 18 cases of small intestinal stromal tumors, there were 2 cases in primary duodenum, 7 cases in jejunum and 9 cases in ileum, 14 cases were malignant, 2 cases were benign and 2 cases were borderline. The CT findings were closely related to the intestinal wall Soft tissue mass, lesions generally clear; benign, most less than 3cm, more uniform density; malignant, the majority is greater than 5cm, the density is uneven, the mass visible hemorrhage capsule necrosis. Mostly for the rich blood supply, enhanced, the substantial part of the mass enhancement significantly, cystic necrosis area is not enhanced. CONCLUSIONS: The CT features of small intestinal stromal tumors have certain characteristics. CT can accurately display the location, shape, size and enhancement characteristics of GIST, which is of great value for preoperative localization, characterization and tumor grade.