贲门失弛缓症术后并发食管旁疝致胃底绞窄坏死1例

介绍1例贲门失弛缓症Heller术后16 a并发食管旁疝致胃底绞窄坏死的病例．报告本例患者的详细病历资料和诊治经过．患者起病5 d后剖胸探查,发现胃底疝入左侧胸腔并绞窄坏死,行近端胃大部切除,修复食管裂孔．术后随访1 a无复发．食管旁疝发生嵌顿时,应立即插入胃管减压．如减压不成功或症状不改善,应急诊手术探查．     

颈外动脉栓塞用顺铂白蛋白微球的研究

用乳化化学交联法制备出适合于颌面部鳞癌殒外动脉栓塞用顺铂白蛋白微球;外观呈黄色粉末状,收率80±5%,显微观察呈圆球体,平场粒径56.3μm:药物含量为14.02～14.2%,包封率97.08～97.95%。对其体外释药、灭菌、稳定性及分散溶媒的处方进行了探讨。通过动物实验表明该微球可以达到理想的栓塞效果,并保证能在局部组织停留,有利于提高抗癌药物的疗效,降低毒副作用。     

用二维核磁共振法研究肿足蕨碱的结构

从金星蕨科植物山东肿足蕨(Hypodematium sinense Iwatsuki)的全草分得一种新化合物,通过¹H-¹H COSY谱,¹H-¹³C COSY谱和远程¹H-¹³C COSY谱确定其结构是一种具有苯基取代苯并氮杂环辛四烯新型骨架的生物碱,命名为肿足蕨碱(hypodematine)(Ⅰ)。     

Carcinomatous involvement of the hilum and mediastinum: computed tomographic and magnetic resonance evaluation

Magnetic resonance (MR) imaging and computed tomography (CT) were compared in 20 patients who had primary lung tumors, and the results were correlated with findings at surgery and pathologic evaluation. Both studies demonstrated a similar ability to detect hilar and mediastinal tumor. MR imaging detected more enlarged nodes in the mediastinum, but in several patients these enlarged nodes did not contain tumor. Consequently, MR imaging has a slightly higher false-positive rate in the evaluation of the mediastinum. Both modalities were highly sensitive, with specificity limited by the presence of enlarged benign lymph nodes in this series of patients.     

Torsion of the upper lobe in pneumothorax

A rounded density is occasionally seen hanging down from the hilus in the presence of a large pneumothorax. To find an explanation for this appearance, the authors obtained a right-sided bronchogram on a baboon, after which they induced pneumothorax on the same side. This experiment demonstrated that the rounded density is formed by a twisted and atelectatic upper lobe.     

顺铂壳聚糖微球的制备及特性研究

对顺铂壳聚糖微球的制备、载药量、大小及分布、形态及表面状态、体外释放及降解性进行了研究。微球用乳化-化学交联技术制备,平均粒径为74.80μm,顺铂含量为20.83%±0.36%。电镜扫描显示,微球球形圆整,表面粗糙。生理盐水中放置1h微球轻微溶胀,其体外释药符合一级方程,微球经⁶⁰Co辐射灭菌达到无菌要求。犬肝动脉栓塞后一个月,病理切片可见栓塞区仍有壳聚糖微球存在。