目的 探讨内镜下治疗胆管乳头状瘤的价值。方法 6例经病理学检查证实的胆管乳头状瘤患者在行“胆道探查+ T管引流术”后6～8周行胆道镜下高频电刀烧灼术，对术后治疗效果进行评估。结果 6例患者术后胆汁引流量逐渐增多至100～400 ml/d(平均250 ml/d)，胆汁黏稠度明显减轻，黄疸减退。术后随访1～3年，平均2年，3例患者术后黄疸、腹痛明显减轻，至今无复发； 2例在继续治疗中； 1例患者随访半年，T管引流通畅，但因严重肺部感染并发多器官功能衰竭死亡。结论 内镜下高频电刀烧灼治疗胆管乳头状瘤能有效缓解患者的临床症状，明显提高患者的生存质量。
Objective To investigate the severe complications recently after endoscopic sphincterotomy (EST) and related risk factors. Methods Two thousands one hundred and twenty patients after EST in People’s Hospital of Leshan city in recent 15 years were collected to be analyzed. The incidence rates of severe complications were observed and related risk factors were analyzed. Results Thirty four cases (1.60%) in 2 120 patients presented severe complications in 72 h after EST: Nine were with hemorrhage, 23 with acute pancreatitis, 1 with duodenum perforation and 1 with septicemia. Acute pancreatitis was the most remarkable severe complication. The duodenal papilla with tumor or inflammation, and oddi dysfunction were the primary risk factors of hemorrhage or acute pancreatitis, respectively. The rate of oddi dysfunction patients with acute pancreatitis reached up to 44.68% (21/47). Conclusions Acute pancreatitis is the most common severe complications recently after EST and sphincter of oddi dysfunction is the most remarkable risk factor.
Esophageal diseases include esophageal malignant diseases and benign diseases, with a high incidence in our country. Along with the development of the endoscopic technique, many of them which required medical treatment or surgery in the past can now be cured by endoscopic surgery. This article is an overview of long-term follow-up of endoscopic surgery for the common esophageal disease, such as early squamous cell carcinoma, esophageal stricture, achalasia and submucosal tumor of the esophagus.
Esophageal cancer is a serious threat to the health of Chinese people. The key to solve this problem is early diagnosis and early treatment, and the most important method is endoscopic screening. The rapid development of artificial intelligence (AI) technology makes its application and research in the field of digestive endoscopy growing, and it is expected to become the "right-hand man" for endoscopists in the early diagnosis of esophageal cancer. Currently, the application of multimodal and multifunctional AI systems has achieved good performance in the diagnosis of superficial esophageal squamous cell carcinoma and precancerous lesions. This study summarized and reviewed the research progress of AI in the diagnosis of superficial esophageal squamous cell carcinoma and precancerous lesions, and also explored its development direction in the future.
Esophageal cancer is an aggressive malignancy with high morbidity and poor prognosis. Symptoms of early esophageal cancer are insidious and difficult to detect, while advanced esophageal obstruction, lesion infiltration and metastasis seriously affect patients’ quality of life. Early detection and treatment can help to increase the survival chance of patients. Recently, artificial intelligence (AI) has shown remarkable success in diagnosis of esophageal cancer, highlighting the great potential of new AI-assisted diagnostic modalities. This paper aims to review recent progress of AI in the diagnosis of esophageal cancer and to prospect its clinical application.
Objective To evaluate the therapeutic effects of endoscopic treatment on biliary tract complications after liver transplantation. Methods The clinical data of 55 patients with biliary tract complications after liver transplantation undergoing endoscopic treatment from January 2006 to June 2009 were analyzed retrospectively. Results Ninety-eight times of endoscopic treatment were performed in 55 patients. There were 11 cases of biliary fistula, 4 cases of bile duct stricture with biliary fistula, 21 cases of bile duct stricture, 12 cases of bile duct stricture with biliary sludge or stones, 3 cases of biliary sludge or stones, 2 cases of angular distortion of the bile duct and papilla duodeni stenosis in 2 cases. Different procedures including biliary tract dilation, endoscopic nasobiliary drainage, endoscopic sphincterotomy, stone extraction technique and biliary stent placement were performed in different biliary tract complications. The endoscopic treatments were successful in 46 cases (83.6%). The procedure related complications were found in 13 times (13.3%). Conclusion Endoscopy may serve as the primary modality for treating biliary tract complications after liver transplantation with safety and effectiveness.
【摘要】 目的 观察低频超声（20 kHz）辐照联合静脉注射微泡造影剂SonoVue对裸鼠前列腺癌（Du145）移植瘤的抑瘤效应，并探讨其可能的抑瘤机制。 方法 通过细胞移植和瘤块移植方法建立24只裸鼠前列腺癌Du145移植瘤模型，随机分为超声微泡组、单纯超声组、单纯微泡组和对照组，每组各6只。超声微泡组：尾静脉注射0.2 mL SonoVue的同时对瘤体行20 kHz超声辐照，辐照强度200 mW/cm2；单纯超声组：尾静脉注射生理盐水0.2 mL，同时超声辐照2 min；单纯微泡组：尾静脉注射SonoVue 0.2 mL同时行假照，各组均隔天1次，共3次，对照组不做任何处理。治疗后测量瘤体大小，绘制瘤体生长曲线，计算抑瘤率。首次治疗后14 d剥离瘤体，通过光学显微镜、电子显微镜观察肿瘤组织病理改变。免疫组织化学方法观察CD34阳性染色血管，计算肿瘤微血管密度（micro vessel density，MVD），比较各组间MVD的差异。 结果 24只裸鼠均成功植瘤。治疗后超声微泡组瘤体体积均数明显小于其他3组（Plt;0.05），抑瘤率为62.7%。光学显微镜下超声微泡组瘤体组织大部分损伤坏死，电子显微镜下超声微泡组肿瘤内微血管的内皮细胞损伤，线粒体肿大，基底膜断裂。超声微泡组瘤体内CD34阳性染色微血管数减少，其MVD值显著低于其他各组。 结论 20 kHz低频超声辐照联合微泡造影剂SonoVue可有效抑制裸鼠人前列腺癌移植瘤的生长，其抑瘤机制可能是通过超声空化效应破坏肿瘤的微血管实现的。【Abstract】 Objective To investigate the anti-tumor effect induced by low-frequency ultrasound (20 kHz) radiation combined with intravenous injection of microbubbles on human prostate carcinoma xenograft in nude mice, and to discuss its probable mechanism. Methods Human prostate carcinoma xenograft model in 24 nude mice were established with human prostate carcinoma Du145 cells inoculation and sub-graft through mice, which were randomly divided into ultrasound+microbubble, ultrasound, microbubble, and control group, with 6 mice in each group. In the ultrasound+microbubble group, 0.2 mL SonoVue was injected intravenously, followed by 20 kHz ultrasound exposure of 200 mW/cm2 at every other day for 3 times totally. Mice in the ultrasound group and the microbubbles group were only treated with ultrasound radiation and microbubbles injection, respectively. The volume of gross tumors was measured, and tumor growth curve was drawn. The ratio of anti-tumor growth was calculated. The mice were sacrificed 14 days after the last ultrasound exposure. Specimens of the exposed tumor tissues were obtained and observed pathologically under light microscope and transmission electron microscope. CD34 positive vessels were counted in all the tumor slices by immunohistochemistry, and the micro-vessels density（MVD）of the tumor was also calculated. Results Du145 prostate tumor model was successfully established in all the mice. The average gross tumor volume of the ultrasound+microbubble group was significant lower compared with the other two groups after treatment (Plt;0.05), and the ratio of anti-tumor growth was 62.7%. Histological examination showed signs cell injury in the ultrasound+microbubble group. Electron microscopic examination revealed that the endothelium of vessels in the tumor was injured. The amount of CD34 positive vessels and MVD of the ultrasound+microbubble group was less than that of the other two groups. Conclusion The low-frequency ultrasound of 20 kHz exposure combined with microbubbles can be used to ablate human prostate carcinoma xenograft in nude mice, which is probably realized through micro-vessels destroyed by cavitation effect of ultrasound.