Total thoracoscopic combined lingulectomy and pericardial cystectomy

Thoracoscopic anatomic segmentectomy is usually more complex than lobectomy. This video shows a 58-year-old female who suffered from limited bronchiectasis of the lingular segment of the left upper lung and a pericardial cyst on the same side. Both of these benign thoracic diseases can cause pleural adhesions. Repeated chronic inflammation contributes to hypervascularity and lymph node enlargement, making surgery more difficult. We used single-direction thoracoscopic segmentectomy via a three-port approach and successfully removed the lingula and pericardial cyst.     

高速逆流色谱法分离纯化浙贝母中贝母素甲, 贝母素乙

目的:采用高速逆流色谱技术分离提纯浙贝母中的活性成分贝母素甲,贝母素乙.方法:采用氯仿-无水乙醇-0.2mo1.L-1盐酸(4:3:2)系统,上相为固定相,下相为流动相.主机转速为800r.min-1,流动相流速为1.2mL·min-1.结果:一次进样分离得到贝母素甲、贝母素乙,经高效液相(HPLC)分析纯度,经MS,1HNMR鉴定结构.结论:利用本实验条件可从浙贝母中分离制备贝母素甲,贝母素乙,两者纯度分别达到:97.5%,94.5%.     

Vasculogenic mimicry in non-small cell lung cancer and its relationship with tumor stage

Objective:The purpose of the study was to study the mechanism of vasculogenic mimicry (VM) and its relation-ship with tumor stage in non-smal celllung cancer (NSCLC). Methods:Forty-two patients with NSCLC were col ected, 19 belonged to the early stage (stages I+II) while 23 were late stage (stages III+IV). Moreover, 20 patients got surgical treat-ment and 22 got chemotherapy. We studied the relationship of VM with stage, chemotherapeutic ef ect, HIF-1α, microves-sel density (MVD) and clinicopathologic features. Results:VM in patients of early stages were significantly more than late stages (68.4%vs 26.1%, P=0.006), and the positive rate of VM was proportional to HIF-1α(P=0.034). But no correlation was found between VM and chemotherapeutic ef ect (14.3%vs 26.7%, P=1.00) or MVD (P>0.05). Furthermore, we found VM also showed a negative correlation with distant metastases and lymph nodes metastases (P<0.05) while no correlation was found with other clinicopathologic. Conclusion:VM was generated during the early stage in NSCLC and correlated with lymph nodes metastases. As the disease progressed, VM may be replaced by vascular endothelial cells, so the late-stage patients especial y people with distant metastases had fewer VM. As the main factor produced by hypoxia, HIF-1αmay make a dif erence in VM formation. Thus we inferred VM might be a new target for targeted therapy, and could provide help for clinical staging and treatment.     

关附庚素对缺O_2、高K~ 及酸中毒豚鼠乳头肌和兔窦房结动作电位的影响

关附庚素（ＧＦＧ）０．８６μｍｏｌ／Ｌ使缺Ｏ２、高Ｋ＋和酸中毒的豚鼠乳头肌动作电位零相最大上升速率（Ｖｍａｘ）进一步降低，动作电位时程（ＡＰＤ）和有效不应期（ＥＲＰ）进一步缩短，而ＥＲＰ／ＡＰＤ９０明显增大。ＧＦＧ８，１６，１２μｍｏｌ／Ｌ使兔窦房结动作电位Ｖｍａｘ、舒张期去极化速率（ＲＤＤ）、自发活动频率（ＳＦＦ）和平均复极化速率（ＭＲＲ）显著降低，ＡＰＤ和舒张间隔（ＤＩ）明显延长，并呈现浓度依赖性     

青年近视人群视网膜劈裂的OCT特征

目的：:通过频域光学相干断层扫描（SD-OCT）观察青年近视人群视网膜劈裂的类型、患病率、组成比例、分布规律及临床特征,探讨青年近视人群视网膜劈裂的SD-OCT影像学特点。方法：:横断面研究。收集2020年7—12月于河北医科大学第二医院眼科近视激光手术门诊就诊的近视患者523例（1 046眼）,其中低度近视（-3.0...     

保留淋巴管的腹腔镜精索静脉高位结扎术12例治疗体会

目的 探讨以亚甲蓝染色、保留精索淋巴管的腹腔镜精索静脉高位结扎术的可行性,并总结治疗经验及手术技巧.方法 回顾性分析2014年2月至2014年9月收治的12例精索静脉曲张患儿的临床资料.12例均为左侧,均以阴囊上方肿物就诊,其中10例伴有明显的阴囊坠胀感.所有患儿通过物理检查及B型超声确诊.其中Ⅱ级精索静脉曲张3例,Ⅲ级9例.B型超声检查表现为阴囊上方不规则血管团块,血管内径明显增宽,与对侧相比患侧睾丸体积均有不同程度缩小.手术年龄7～14岁,平均(11.42±1.78)岁.采用保留淋巴管的腹腔镜精索静脉高位结扎术,手术开始前通过阴囊穿刺在睾丸鞘膜与白膜之间注入亚甲蓝1 ml并轻柔按摩,使精索淋巴管染色.结果 11例患儿淋巴管成功显色并得以保留,10例患儿保留了睾丸动脉.术中出血量少,无1例中转开放手术.手术时间45～90 min,平均(58.33±12.12)min.所有患儿在术后第1天出院,除1例外,余者均无明显阴囊肿胀.随访5个月至1年,无一例发生鞘膜积液,无一例出现明显并发症.结论 通过在睾丸鞘膜囊内注射亚甲蓝能够使精索淋巴管染色,为手术中确切地保留淋巴管提供指引,而通过该方法保留淋巴管对减少术后鞘膜积液发生的意义尚需进一步随访明确.