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时间:2019-10-19
《嗜铬细胞瘤的MRI诊断与鉴别诊断》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、维普资讯http://www.cqvip.com影像诊断与介入放射学2008年第l7卷第l期·3··腹部放射学·嗜铬细胞瘤的MⅪ诊断与鉴别诊断王东烨梁碧玲元建鹏钟镜联陈志光罗嘉玲【摘要】目的探讨嗜铬细胞瘤的MRI诊断与鉴别诊断。方法收集53例经手术病理证实的嗜铬细胞瘤,术前均行MRI扫描,回顾性分析其MR征象。结果53例嗜铬细胞瘤,共59个病灶。单发48例,其中42个位于肾上腺,右侧26个,左侧l6个;异位6个。多发5例,均位于肾上腺,双侧各1个,并其中l例左侧术后复发。良性47例,恶性6例。嗜铬细胞瘤呈较大的类圆形或
2、不规则形肿块(平均瘤径5.7cm),T。wI信号强度类似肝实质,T2【信号较高,肿瘤实体部分多明显强化(40159),易发生坏死、囊变(36/59)。结论MRI检查可较好地显示肿瘤部位、形态、大小、瘤内成分、血供和与周围结构的关系,对嗜铬细胞瘤的诊断和鉴别诊断具有重要价值。【关键词】嗜铬细胞瘤;磁共振成像;诊断MRIdiagnosisanddiferentiationofpheoehromocytomaWANGDong—ye,HANGBi—ling,YUANJian—pe,l暑,ZHONGJing-lian,CHENZ
3、hi-guang.LUOJia-ling.DepartmentofRadiology,theSecondAfiliatedHospitalofSun'f—senUniversity,Guangzhou510120【Abs灯act】ObjectiveToinvestigatetheMRIdiagnosisanddiferentiatiofiofpheoehromoeytorna.Methods53caseswithpatholo~cally-provedpheoehromocytornawerecollected.MRI
4、scanningwasperformedinancasesbeforesurgery.AndtheMRIfindingsofallpheoehromocytornawereretrospectivelyanalyzed.Results59tumorsWereshownin53cases.48casesweresinglephe0ch.o】1l0cytoma'and42tulnorswereadrenalpheoehromoeytornawith26fromrighta-drenalsand16fromleftadren
5、als;6tumorsWereextra-adrenalpheoehromoeytoma.5caseswerebilateralpheochromocy-toma,andltunlorrelapsedfromleftadrenalaftersurgery.47casesWerebenignpheochromocytoma,6cascsweremalig—nantpheoehromoeytorna.Pheochromocytornapresentedasarelativelybigroundorirregularmass
6、(meandiameter5.7cm).ThesignalintensityonTlW1wassimilartothatofhepaticparenchyma,whileon1nwasmarkedhyper-intensity.Mostofthemshowedstrongenhancementinparenchynla(40/59).NecrosisandcysticdegenerationWerecommonfindings(36/59).ConclusionMRIscanningcandisp~ythetumorS
7、location,shape,size,component,bloodsupplyandtherelationwithsurroundingstructureswell,andisvaluableforthediagnosisanddiferentiationofpheoehromoeytoma.【Keywords】Pheochromocytoma;Magneticresonanceimaging;Diagnosis嗜铬细胞瘤(pheochromocytoma)起源于肾上腺龄≤50岁32例。有不同程度的高血压表现者46
8、髓质、交感神经节或其他部位的嗜铬组织,肿瘤持续例,血压波动范围120—300184—180mmHg,平均或间断地释放大量儿茶酚胺,引起持续性或间断性225/126mmHg。其中阵发性高血压25例,持续性高高血压和多个器官功能及代谢紊乱。嗜铬细胞瘤有血压10例,持续性高血压伴阵发性加剧8例,术中相当一部分为恶性,早期诊断、切除肿瘤可
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