Diffuse panbronchiolitis: Case report and review of the literature

Diffuse panbronchiolitis is an uncommon disease of unknown aetiology mainly occurring in Asian races. Treatment with erythromycin acting through unclarif ied mechanisms is promising and may improve the poor prognosis currently associated with the disease. A case is presented illustrating how the imaging features of the disease, particularly on high-resolution computed tomography, may be used to support a diagnosis suggested on clinical grounds.     

TUMORS INVADING PARAPHARYNGEAL SPACE : REFINED IMAGING DIAGNOSIS

ＴＵＭＯＲＳＩＮＶＡＤＩＮＧＰＡＲＡＰＨＡＲＹＮＧＥＡＬＳＰＡＣＥ：ＲＥＦＩＮＥＤＩＭＡＧＩＮＧＤＩＡＧＮＯＳＩＳＺｈｕａｎｇＱｉｘｉｎ庄奇新ＣｈｅｎｇＹｉｎｇｓｈｅｎｇ程英升ＹａｎｇＳｈｉｘｕｎ杨世埙Ｓｈａｎｇｋｅｚｈｏｎｇ尚克中ＹａｎＸｉｎｈｕａ...     

蓝色染料和核素方法在乳腺癌前哨淋巴结定位活检中的应用比较

目的探讨蓝色染料和核素方法在乳腺癌前哨淋巴结定位活检中的可靠性、准确性和临床应用价值.方法运用异硫蓝或^99Tc硫胶体结合术中γ探头或联合两种方法对61例腋淋巴结阴性的乳腺癌病人进行前哨淋巴结定位活检.结果前哨淋巴结定位活检总成功率为95.1%(58/61),2例假阴性,假阴性率7.7%,敏感性92.3%,前哨淋巴结预测区域转移准确率96.6%,特异性100.0%.单用蓝色染料方法的成功率88.2%,假阴性率12.5%,敏感性87.5%,准确率93.3%;单用放射核素结合术中γ探头,成功率为95.2%,假阴性率11.1%,敏感性88.9%,准确率95.0%;两种方法联合,成功率100.0%,无假阴性,敏感性100.0%,准确率100.0%.结论前哨淋巴结定位活检在乳腺癌中能很好反映腋淋巴结转移状况,对指导乳腺癌腋淋巴结清扫的必要性和合理性有极大的应用价值.蓝色染料和核素探测两者相互补充,可提高前哨淋巴结的成功率和准确率.     

18F-FDG符合线路SPECT显像在胃肠道恶性肿瘤术后的应用

目的探讨^18F—FDG符合线路SPECT显像在探测胃肠道恶性肿瘤术后复发和远处转移中的应用价值。方法24例胃肠道恶性肿瘤术后患者，其中食管癌4例，胃癌7例，结肠癌6例，直肠癌7例，运用SIEMENS ECAM^deut SPECT仪进行^18F—FDG显像。结果^18F—FDG显像诊断胃肠道恶性肿瘤术后转移和复发的灵敏度为94．7％，特异性80．0％，准确性91．7％。在^18F—FDG显像真阳性18例中，2例为局部复发，5例为局部复发伴转移，11例为远处转移。在有复发的7例患者中，5例^18F—FDG显像结果与CT检查结果一致，2例CT检查局部未见异常，在有转移的16例患者中，共检出转移灶55处。结论符合线路SPECT仪^18F—FDG显像是检测胃肠道恶性肿瘤术后复发和转移的敏感而有效的方法。     

合并肾囊肿的肾细胞癌临床特点(附64例报道)

目的:总结肾癌合并有肾囊肿病例的临床特点,探讨合并有肾囊肿肾癌病例的诊断、治疗方法,为研究肾癌的发病机制及其预防提供线索。方法:回顾我院1996年5月至2004年1月收治的64例肾癌合并有肾囊肿病例,分析其临床特点,比较B超、CT、MRI在诊断该疾病中的特点和作用,并与同期收治的106例没有合并肾囊肿肾癌病例的临床资料进行分析比较。结果:B超、CT和MRI在诊断肾癌合并有肾囊肿病例时,检查出肾囊肿的准确性分别为37%、24%和35%,而全部64例病理检查中又查出15例(23%)囊性占位性病变;该64例患者全部进行了手术治疗,术后病理报告为肾癌,病理诊断:透明细胞癌61例,颗粒细胞癌2例,混合型(透明细胞癌 颗粒细胞癌)1例;与同期未合并肾囊肿的肾癌病例相比,合并有肾囊肿肾癌病例更好发于男性(P<0.007),且发病年龄较轻(P<0.05),无症状肾癌比例较少(P<0.001),小肾癌(肿瘤直径≤4cm)占比例也相对较少(P<0.024),肿瘤的病理类型和肿瘤的临床分期也有统计学差异(分别是P<0.037和P<0.043)。结论:合并肾囊肿的肾癌具有易发于男性年轻患者、以有症状的非小肾癌居多的特点。B超、CT、MRI在诊断出肾癌的同时,诊断发现肾囊肿的准确性不高,肾癌可能掩盖了对肾囊肿的诊断,联合病理检查可能增加对肾囊肿的诊断;合并有肾囊肿的肾癌有其     

以听力障碍为首发症状的脑膜癌病的临床与影像学表现

目的:探讨以听力障碍为首发症状的脑膜癌病的临床与影像学表现.方法:分析7例患者的临床资料、脑脊液和颅脑MRI检查结果.结果:7例患者,临床表现多样,伴有脑神经损害(Ⅶ神经3例,Ⅵ神经2例,Ⅸ、Ⅹ神经1例,Ⅴ神经1例)和脊神经损害(肢体周围性瘫痪2例),均有脑膜刺激征.结论:以听力障碍为首发症状的脑膜癌病易误诊,脑脊液发现癌细胞仍是确诊脑膜癌病最简便与最直接的证据,软脑膜-蛛网膜下腔强化是脑膜癌病患者较具特征性的影像学表现.     

脑星形细胞瘤MRI定量参数评价血管内皮生长因子表达的价值

目的探讨MRI定量参数评价星形细胞瘤血管内皮生长因子(VEGF)表达强弱的可行性.方法收集手术病理证实的脑星形细胞瘤32例,计算MRI定量指标:T1WI、T2WI上的相对信号强度(RSI0)、增强后相对信号强度(RSIGd)及信号强度增加百分率(EP).采用免疫组化法标记VEGF,对照MRI定量参数与VEGF标记指数之间的关系.结果恶性组与偏良性组之间,上述MRI定量参数差异均有显著性;增强后相对信号强度(RSIGd)及信号强度增加百分率(EP)与VEGF呈正相关.结论增强后相对信号强度(RSIGd)及信号强度增加百分率(EP)可以较好地反映星形细胞瘤的VEGF表达强弱和病理分级.     

The role of MR imaging in invasive cervical carcinoma

In this article the role of MR imaging in the management of cervical cancer is reviewed and illustrated. The appearance of the normal uterine cervix and of cervical carcinoma is shown. Important factors for optimal MR imaging of cervical carcinoma are reviewed. The value of MR imaging in the staging of cervical carcinoma is illustrated by showing parametrial invasion and lymph node involvement. Finally, the value of MR imaging staging is compared with clinical staging, CT staging, and surgical findings. The role of new imaging techniques, such as fast dynamic enhanced MR imaging, is described. Received: 12 April 1999; Revised: 13 July 1999; Accepted: 14 July 1999     

A multipurpose phantom for quality assurance of contrast-enhanced MR imaging of the breast

A phantom consisting of four components was developed to simulate contrast-enhanced MR imaging of the breast. These components included the correlation between the signal intensity and the contrast medium concentration, the uniformity of signals within surface coils, artefacts due to opposed-phase imaging effects, spatial resolution and the acquisition of relevant signal-to-time curves. Repetitive measurements demonstrated an excellent reproduction of phantom imaging with a deviation in signal intensity of approximately 5 %. The presented phantom allows the optimization of examination protocols as well as the comparison of different examination techniques. Furthermore, it enables the routine quality monitoring of contrast-enhanced MR imaging of the breast. Received: 28 May 1998; Revised: 3 September 1998; Accepted: 14 October 1998     

儿童气管、支气管非金属异物的影像学诊断

目的 探讨气管、支气管非金属异物的影像学表现，提高对该病的早期诊断率。方法 回顾性分析了60例气管、支气管非金属异物的临床与影像学征象。结果 本组60例中，右侧支气管异物32例，左侧支气管异物22例，主气管异物6例。常见的影像学表现为阻塞性肺气肿51例，纵隔摆动48例。结论 病史及影像学表现是诊断气管、支气管非金属异物的主要手段。