腹部病理性淋巴结的CT诊断现状

New development on CT techniques in the diagnosis of pathological lymph node of the abdomen

综述腹部病理性淋巴结的CT检查技术及其CT表现和病理基础。腹部淋巴结病变包括结核、淋巴瘤、转移性肿瘤等。淋巴结结核CT强化表现为淋巴结肿大，呈周边环状强化，其优势解剖分布与感染途径密切相关。淋巴瘤的淋巴结肿大常均匀强化，少数均匀强化合并坏死，当累及邻近血管时表现为“夹心饼征”，优势的累及腹主动脉周围上、下部淋巴结。转移性肿瘤淋巴结增大多表现混杂或不均匀或周边强化，优势解剖分布取决于原发肿瘤的淋巴引流途径。

This paper reviews CT techniques, CT manifestations and pathologic basis of the abdomen lymphadenopathy. The abdomen lymphadenopathy has tuberculosis, lymphoma and metastasis etc. Tuberculous adenopathy commonly shows lymphadenectasis, peripheral enhancement , frequently involved extent relating to the infection routes of abdomen tuberculous. Lymphomatous adenopathy often shows homogoneous enhancement, a few accompany necrosis , sometimes lymphadenectasis encased vessel as ＂sandwich＂, frequently involved the upper and lower paraaoratic lymph nodes. Metastasis lymphadenectasis mostly shows mixed or inhomogeneous enhancement , and the anatomic distribution relating to the draining course of the lymphatics.