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目的 :研究不同性质腹腔、腹膜后淋巴结病变的 CT表现特点以提高 CT诊断的准确性。方法 :对 9例腹腔和腹膜后淋巴结结核、 8例非 Hodgkin淋巴瘤 (NHL)、 7例 Hodgkin病 (HD)及 6例淋巴结转移瘤的治疗前 CT图像资料进行对照研究。结果 :(1)病灶周边出现薄且厚薄均匀的高密度环状强化带、强化环内结构无强化且近似水样密度而致病灶呈“囊肿样”表现 ,为结核的 CT特征 ;(2 )病灶融合呈大块状且均匀强化、包绕高密度的大血管呈“夹心饼样”表现 ,为恶性淋巴瘤的 CT特征 ;(3)转移瘤病灶多孤立、散在分布。结论 :(1)病灶的不同增强 CT特点对鉴别诊断具有重要意义 ;病灶的平扫密度特点对鉴别诊断具有参考价值。 (2 )病灶的大小及分布范围等情况对鉴别诊断意义不大
Objective: To study CT features of different types of abdominal and retroperitoneal lymph node lesions in order to improve the accuracy of CT diagnosis. Methods: Nine cases of peritoneal and retroperitoneal lymph node tuberculosis, 8 cases of non-Hodgkin lymphoma (NHL), 7 cases of Hodgkin’s disease (HD) and 6 cases of lymph node metastases before treatment CT image data were compared. Results: (1) There was a thin and uniform high-density ring-shaped enhancement zone around the lesion. The enhancement of the inner structure of the lesion did not intensify and approximate the density of water sample. The lesions showed “cyst-like” Fusion lesions were massive and uniformly enhanced, surrounded by high-density large blood vessels were “sandwich-like” performance, CT features of malignant lymphoma; (3) metastatic lesions more isolated and scattered. Conclusion: (1) The different CT features of lesion are of great significance for differential diagnosis. The features of the density of lesion are of reference value for differential diagnosis. (2) the size of the lesion and the distribution of the situation of little significance for the differential diagnosis