腹膜后肿瘤和肿瘤样病变CT诊断价值

目的 分析腹膜后肿瘤和肿瘤样病变CT表现,探讨CT对其定位、定性诊断的价值和限度.方法 回顾性分析45例经手术病理证实的腹膜后肿瘤患者的CT资料,并与病理结果对照.结果 良性25例、恶性20例.良性病变CT显示密度均匀,轮廓光滑,边界清晰;恶性病变CT显示混杂密度,瘤体大而不规则.CT定位诊断正确率87%,良、恶性诊断准确率78%,组织类型诊断率49%.结论 CT对腹膜后肿瘤诊断有重要价值,对肿瘤定位诊断准确,对良恶性鉴别有帮助,但对病理组织类型诊断有限度.

Diagnostic value of CT imaging in retroperitoneal tumor and tumor-like lesion

Objective To analyze CT features of retroperitoneal tumors or tumor-like lesion and to evaluate CT in localizating and qualitative diagnosis of diseases.Methods CT findings in 45 cases with pathologically-proved retroperitoneal tumor were retrospectively analyzed and compared with pathological results.Results There were 25 cases of benign tumors and 20 cases of malignant tumors.The CT features of benign tumors were homogeneous density,smooth peripheria with clear border,while mixed density,large and irregular in malignant tumors.The accuracy of localizating lesions was 89%,the accuracy of qualitative diagnosis was 78%,the accuracy of histologic evaluation was 49%.Conclusion CT imaging is valuable in diagnosing retroperitoneal tumors.CT can make accurate localization of tumors and identify the nature of tumors,but is limited in evaluating histologic types.