艾滋病相关腹部淋巴瘤的CT表现及病理分析

CT imaging features and pathological analysis of AIDS-related abdominal lymphoma

目的:探讨艾滋病相关腹部淋巴瘤的特征性CT表现和病理。方法:回顾性分析22例艾滋病相关腹部淋巴瘤患者的CT表现和病理分型。结果:22例艾滋病相关腹部淋巴瘤中21例(95.5%)为非霍奇金淋巴瘤,主要表现为多发淋巴结肿大;结外病变发生率较高(77.3%),多表现为与肌肉密度相仿的软组织密度肿物;肿块较大时较易出现坏死,瘤体内可见固有解剖结构残留及周围组织侵犯程度相对较轻为其主要特点。无论是按不同部位还是不同病理分型,其CT强化趋势大致相同(P值分别为0.491、0.138),均表现为轻中度强化的特点。霍奇金淋巴瘤的各期强化CT值均高于非霍奇金淋巴瘤(P值均<0.01)。结论:艾滋病相关腹部淋巴瘤以非霍奇金淋巴瘤为主,CT表现具有一定的特征性,对临床具有重要的诊断及鉴别诊断价值。

Objective: To investigate the CT imaging features and pathology of AIDS-related abdominal lymphoma. Methods: The CT images and pathological results of 22 cases of AIDS-related abdominal lymphoma were retrospectively analyzed. Results: AIDS-related abdominal lymphoma was mainly non-hodgkin's lymphoma (95.5%),generally presented as multiple lymph node enlargement.There was the high incidence (77.3%) of the extranodal lesions,always manifested as uniform soft tissue density mass similar to muscle density.The tumor was slightly prone to necrosis when larger.Residual intrinsic anatomical structure and relatively mild peripheral invasion were its considerable characteristics.The CT enhancement pattern of tumor in different sites and pathological types were similar ( P =0.491;P =0.138),and all presented as mild to moderate enhancement.The CT enhancement value of Hodgkin's lymphoma was higher than that of non-hodgkin's lymphoma ( P <0.01). Conclusion: The AIDS-related abdominal lymphoma is mainly non-hodgkin's lymphoma,and CT imaging features have important diagnostic and differential value clinically.