摘要
目的:探讨胃平滑肌肿瘤的影像学诊断价值和限度。材料和方法:经手术病理或(和)活检证实的胃平滑肌瘤17例,平滑肌肉瘤21例。回顾性分析其影像学表现特征。结果:平滑肌肿瘤X线诊断的准确性为74.1%(20/27)。腔内型15例,表现为圆形或卵圆形向腔内突出的肿块,并伴溃疡形成(9/15)。腔外型7例,为胃壁的受压变形;混合型5例,兼有上述两型表现。CT定性诊断为86.4%(19/22),定位诊断为95.5%(21/22),10例平滑肌瘤直径多在5cm内(80%),表现为圆形或椭圆形软组织肿块,境界清楚,密度多均匀(80%),明显强化。12例平滑肌肉瘤中表现为不规则分叶状肿块者11例(91.7%),倾向于腔外或偏心性生长,肿块内不规则低密度坏死区(83.3%),实质明显不均匀强化。肿块直径多大于5cm(83.3%)。结论:CT扫描在胃平滑肌肿瘤的诊断及鉴别诊断上有重要价值,明显优于钡餐检查。
Purpose: To investigate the imagiologic diagnostic value and limitation of gastric smooth muscle tumors. Materials and Methods: Imagiologic feature of leiomyoma 17 cases, leiomyosarcoma 21 cases which performed by operation/ pathology and biopsy were analyzed retrospectively. Results: The diagnostic accuracy rate of X - ray was 74.1% (20/27), X - ray freature were as following: Intraluminal type (15 cases) had a protruding into intraluminal round or ovoid mass with ulcer(9/15); extraluminal type(7 cases) had a extrapressure deformity of gastric contour; mixed type(5 cases) had two of above.The quality diagnostic accuracy rate of CT is 86.4% (19/ 22), The diagnostic accuracy rate of site location of CT is 100% .Round or ovoid soft tissue mass, distinct margin, uniform density(80%), obvious contrast enhance were seen in the 10 cases with gastric leiomyoma. Most lesions were less than 5 cm in diameter (80%) . 12 cases with leiomyosarcoma, CT showed irregular lobulated mass(91.7%), exophytic or eccentric growth pattern, irregular low - density necrotic areas(83.3% ) and obvious heterogeneous enhance.Most lesions were larger than 5 cm in diameter(83.3%) .Conclusion: CT scan is valuable in the diagnosing and differentiating of gastric smooth muscle tumors. It is specially superior to barium meal examination for exophytic gastric smooth muscle tumors.
出处
《中国医学计算机成像杂志》
CSCD
2003年第2期110-113,共4页
Chinese Computed Medical Imaging