胰腺淋巴瘤的多排螺旋CT表现及病理基础  

Pancreatic Lymphorna： Diagnosis with MDCT and corresponding pathologic basis

作　　者：马周鹏[1] 周建军[1] 王春[2] 章顺壮[2] 刘学玲[1] 

机构地区：[1]复旦大学附属中山医院放射科,上海200032 [2]温州医学院附属慈溪医院放射科

出　　处：《浙江医学》2012年第22期1833-1835,1838,共4页Zhejiang Medical Journal

基　　金：复旦大学生物研究院资助项目（12408）

摘　　要：目的分析胰腺淋巴瘤的多排螺旋CT（MDCT）表现，以提高诊断水平。方法回顾性分析11例经病理或临床随访证实的胰腺淋巴瘤的MDCT资料。结果11例中6例为淋巴瘤侵犯胰腺，5例为原发于胰腺的淋巴瘤。表现为肿块型8例，弥漫浸润型3例。平扫肿瘤呈相对低或稍低密度，CT值约27．1～42．5Hu，边界较模糊。增强扫描8例肿块型动脉期呈轻度强化，静脉期强化较动脉期有加强，但明显弱于正常胰腺；3例浸润型动脉期轻度不均匀强化，静脉期强化略加强。5例肿瘤包绕血管。类似“血管漂浮征”。6例见腹腔或腹膜后肿大淋巴结，呈轻至中度相对均匀强化，未见明显坏死。所有肿瘤未见钙化。未见明显胰管扩张。结论胰腺淋巴瘤以肿块型多见．CT平扫呈低或略低密度，相对均匀且少见坏死；增强呈轻至中度较均匀延迟强化，部分可见类似“血管漂浮征”。Objective To evaluate the multidetector-row computed tomography （MDCT） scan in diagnosis of pancreatic lymphoma. Methods The MDCT findings and crinical data of 11 patients with pancreatic lymphoma were retrospectively re- viewed. Results Among 11 patients, 6 cases were secondary lymphomas and 5 cases were primary lymphomas; 3 cases were of invasive type and 8 cases were of mass type. The lesions showed low density with unclear boundary on plain CT scan with a CT value od 27.1Hu -42. 5Hu. On dynamic CT enhancement scan, 8 cases were intensified slightly in artery-phase, showed continuous enhancement in vein-phase, but were fainter than normal tissue of pancreas. Three cases of invasive type showed asymmetrical slightly enhancement in artery-phase and continuous enhancement in vein-phase. Slender blood vessels present- ed ＂blood vessel float-sign＂ in 5 cases; in 6 cases the intumescence of celiac or retroperitoneal lymph-nodes presented asym- metric size, slightly to moderately homogeneous enhancement and no obvious necrosis. Calcification and dilation of pancreatic duct were seen in all cases. Conclusion Pancreatic lymphomas present characteristic findings in plain or enhance scan of MD- CT, which is helpful for diagnosis.

关 键 词：胰腺 淋巴瘤 体层摄影术 X线计算机 

分 类 号：R735.9[医药卫生—肿瘤]