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目的 探讨CT 征象在原发性腹膜后肿瘤( PRN) 定位定性诊断中的作用。方法 对54 例经手术及病理学证实的PRN 的CT 征象作回顾性分析。结果 PRN 可致腹膜后相邻脏器移位,边界不清或包埋,而对腹内脏器则以移位为主。肿瘤的轮廓是否规则,密度是否均匀,有无坏死,对判断良恶性意义较大,而肿瘤大小对良恶性鉴别关系不大。CT 的定位、良恶性鉴别、病理学类型估计的准确率分别为87-0 % ,72-2 % ,42-6 % 。结论 CT 是PRN 诊断的最佳影像学手段之一。
Objective To investigate the role of CT in the qualitative diagnosis of primary retroperitoneal tumor (PRN) localization. Methods The CT findings of 54 PRN confirmed by surgery and pathology were retrospectively analyzed. Results PRN can cause adjacent retroperitoneal organs shift, the border is unclear or embedded, while the abdominal organs are the main shift. Tumor outline whether the rules, the density is uniform, with or without necrosis, to determine the benign and malignant significance, while the size of the tumor has little to do with the identification of benign and malignant. The accuracy of CT localization, benign and malignant differentiation and pathological type estimation were 87-0%, 72-2% and 42-6% respectively. Conclusion CT is one of the best imaging modalities for PRN diagnosis.