64排螺旋CT对胃肠间质瘤的诊断价值

Value of 64-slices spiral-CT in diagnosing the gastrointestinal stromal tumors

目的探讨64排螺旋CT对胃肠道间质瘤的诊断价值。方法回顾性分析12例经手术病理证实的胃肠道间质瘤CT表现。结果肿瘤发生于胃8例,小肠3例,肠系膜1例。其中恶性5例,直径>5 cm,密度不均匀,伴坏死,呈类圆形或分叶样,边界不清,增强后静脉期明显强化;良性5例,呈类圆形,直径<5 cm,边界清晰,密度多较均匀,增强后多均匀强化。潜在恶性2例,瘤体密度较均匀。静脉期多平面重建可更清晰显示肿瘤与周围组织的关系。结论 64排CT检查对胃肠间质瘤的定位、定性诊断具有重要价值。

Objective To evaluate the value of 64-slices spiral-CT in the diagnosis of gastrointestinal stromal tumors.Methods Twelve cases of gastrointestinal stromal tumors proved by pathology were analyzed retrospectively.Results The locations of primary tumor in descending order of frequency were stomach（n=8）,the small bowel（n=3）,mesenterium（n=1）.The malignant lesions（n=5） were larger than 5.0 cm in diameter and cystic degeneration as well as necrosis were deteced within the tumors,which appeared mainly as round or oval in shape.Obvious enhancement can be seen in the venous phase.The benign lesions（n=5） were usually appeared as round,within 5 cm in size with well-defined margin and showed homogeneous enhancement.The underlying malignant lesions were 2 cases which showed homogeneous density.Multiplanar reformation displayed the relationship of tumor and the neighbor tissue.Conclusion 64-slices spiral-CT exammation is helpful to determine the location and nature of gastricintestinal stromal tumors.