摘要
目的 :评估CT在原发性腹膜后肿瘤诊断中的价值。材料和方法 :回顾性分析经手术和病理证实的30例原发性腹膜后肿瘤的CT平扫和增强表现 ,并与手术病理结果对照。结果 :腹膜后肿瘤的主要定位征象为腹膜后器官和血管受压前移或侧移 ,肿瘤与相邻后腹壁或盆壁肌肉、脂肪间隙不清晰或消失 ,肿瘤与腹腔内脏器间隔的完整 ,术前CT定位诊断准确率为86.7 % (26/30) ;对良恶性判断的准确率为83.3 % (25/30) ;神经源性肿瘤表现为水样密度或软组织密度 ,脂肪肉瘤呈现为囊实性或软组织密度肿块 ,嗜铬细胞瘤以囊变和明显强化为主要表现 ,畸胎瘤、脂肪瘤各有特征性表现 ,术前病理组织类型判断准确率为33.3 % (10/30)。结论 :CT对原发性腹膜后肿瘤定位诊断可靠 ,对肿瘤良恶性预测具有帮助作用 。
Purpose:To evaluate the value of CT in the diagnosis of primary retroperitoneal neoplasms(PRN)?Materials and Methods:the CT findings of30PRN were retrospectively analyzied and correlated with surgical and pathologic findings.Results:shifted adjacent retroperitoneal vessels,anterior displacement of the retroperitoneal organs,intact fat layer between the mass and intraperitoneal organs,obscred inˉterface between the mass and the posterior abdomen of pelvic wall were the main diganostic findings depending on the origin of the tumor.The correct rate of CT localization was86.7%(26/30).The accuˉrate rate of CT in the prediction of benignancy or malignance was83.3%(25/30).Neurogenic tumors were manifested as water or soft tissue density,solid-cystic or soft tissue mass was showed in liposarˉcoma,cystic degeneration and marked enhancement were feature of pheochromocytoma,mature cystic teratoma,lipoma had characteristic appearance.Conclusion:CT was reliable for localization of PRN and useful for the prediction of their malignancy or benignancy,provided diagnostic clue for histologic evalˉuation of PRN and was helpful in differential diagnosis.
出处
《中国医学计算机成像杂志》
CSCD
2003年第4期278-282,共5页
Chinese Computed Medical Imaging
