胃肠道间质瘤的CT诊断

目的分析胃肠道间质瘤的CT征像及临床价值。方法回顾性分析经手术和病理证实的11例胃肠道间质瘤患者的CT影像资料，并将大体病理所见与CT表现对照。结果肿瘤位于胃部4例，十二指肠3例，空肠2例，直肠1例，肠系膜1例。11例中恶性9例，潜在恶性1例，不能确定良恶性1例。11例中10例肿块表现为外生性肿块，多较大，其中恶性肿块最大径3～30cm。肿瘤密度不均匀，呈囊实性，实性部分中度强化至明显强化，1例肿块内伴有溃疡形成。结论胃肠道间质瘤的CT征像有一定特点，CT检查有助于胃肠道间质瘤的定位，和观察肿瘤与周围组织结构关系时指导临床治疗和估计预后有一定的价值。

Gastrointestinal Stromal Tumors: CT Diagnosis and Its Clinical Valuation

Objective To investigate the specific CT findings of gastrointestinal stromal tumors(GIST)and clinical valuation.Methods The CT imaging of l1 cases of GISTs confirmed operatively and pathologically were reviewed and analyzed.The gross pathologic findings of the tumors were compared with the manifestations of CT study.Results Four of the 11 GISTs were from the stomach,3 from the duodenum,2 from jejunum,and 1 from rectum and mesenterium respectively.9 of the 11 GISTs were malignant,1 of them was potentially malignant,1 was not sure to be malignant or benign.CT studies of 10 tumors showed as exogenous mass of 3~30 cm in the max diameter.the tumors were cystic-solid with inhomogenous attenuation.The solid potion of tumors enhanced moderately to markedly after the contrast media administered.Ulcer was seen in the tumors of 1 case.Conclusions CT findings of GIST were specific to a certainty.CT study is helpful in locating the tumor and observation of the relationship of the tumor and surrounding structures,and in instructing clinical treatment and estimating prognosis.