腹部结外淋巴瘤的CT诊断及鉴别诊断

目的通过对腹部结外淋巴瘤CT表现的回顾分析,加深对该病的认识,以提高对该病的诊断水平。方法经手术或穿刺病理证实的淋巴瘤患者13例,术前经多排螺旋CT平扫、动脉期、门脉期及延迟期扫描,对该组病例的影像及临床资料作回顾性对照分析。结果腹部结外淋巴瘤13例：其中胃2例,脾脏2例,肾脏2例,小肠5例,结肠2例（包括回盲部）。CT平扫：病灶呈均匀或大部均匀之软组织密度影,所累及脏器整体形态尚存,增强病灶呈轻中度均匀延迟强化。结论腹部淋巴瘤共性表现包括：瘤体密实;瘤体内可见原有组织的解剖结构残留;CT多为等或稍高密度;增强一般轻度至中度延迟强化;受累脏器整体形态尚存。

The CT diagnosis and differental diagnosis of abdominal extranodal lymphoma

Objective To improve the recognition of the abdominal extranodal lymphoma through retrospective analysis by it＇ s CT appearances, and the diagnostic accuracy to this disease. Methods The multi-deteetorrow spiral CT findings of ab- dominal extranodal lymphoma （13 eases）,eertified by surgieal pathology , were reviewed and analyzed retrospectively in comparison with surgical and pathological results. Results 13 eases of abdominal extranodal lymphoma originated from the stomach （2 eases）, spleen （2 eases）, ren（2 eases）, small intestine（5 eases） and colon （included ileoeeeal junction ） （2 eases）. The lesions underwent CT scan were shown as homogeneous or bulk homogeneous density ,and the appearances of the involved organ still remained . All lesions presented low to middle degree dynamic delayed enhancement. Conclusion General CT imaging fea- tures of abdominal extranodal lymphoma inelude well-circumscribed solid masses with homogeneous isodensity, little hyperden- sity, low to middle degree dynamic delayed enhancement in which intrinsic anatomic structures are remained and the appear- anees of the involved organ still remained.