AIM: To investigate the clinical pathologic features of gastrointestinal leiomyoma and the diagnostic value of endoscopic ultrasonography (EUS) on gastrointestinal leiomyoma.METHODS: A total of 106 patients with gastr...AIM: To investigate the clinical pathologic features of gastrointestinal leiomyoma and the diagnostic value of endoscopic ultrasonography (EUS) on gastrointestinal leiomyoma.METHODS: A total of 106 patients with gastrointestinal leiomyoma diagnosed with EUS were studied. The location,size and layer origin of gastric and esophageal leiomyomas were analyzed and compared. The histological diagnosis of the resected specimens by endoscopy or surgery in some patients was compared with their results of EUS.RESULTS: The majority of esophageal leiomyomas were located in the middle and lower part of the esophagus and their size was smaller than 1.0 cma, and 62.1% of esophageal leiomyomas originated from the muscularis mucosae. Most of the gastric leiomyomas were located in the body and fundus of the stomach with a size of 1-2 cm. Almost all gastric leiomyomas (94.2%) originated from the muscularis propria. The postoperative histological results of 54 patients treated by endoscopic resection or surgical excision were completely consistent with the preoperative diagnosis of EUS,and the diagnostic specificity of EUS to gastrointestinal leiomyoma was 94.7%.CONCLUSION: The size and layer origin of esophageal leiomyomas are different from that of gastric leiomyomas.Being safe and accurate, EUS is the best method not only for gastrointestinal leiomyoma diagnosis but also for the follow-up of patients.展开更多
Ultrasound (US) is often the first imaging modality employed in patients with suspected focal liver lesions. The role of US in the characterisation of focal liver lesions has been transformed with the introduction of ...Ultrasound (US) is often the first imaging modality employed in patients with suspected focal liver lesions. The role of US in the characterisation of focal liver lesions has been transformed with the introduction of specific contrast media and the development of specialized imaging techniques. Ultrasound now can fully characterise the enhancement pattern of hepatic lesions, similar to that achieved with contrast enhanced multiphasic computed tomography (CT) and magnetic resonance imaging (MRI). US contrast agents are safe, well-tolerated and have very few contraindications. Furthermore, real-time evaluation of the vascularity of focal liver lesions has become possible with the use of the newer microbubble contrast agents. This article reviews the enhancement pattern of the most frequent liver lesions seen, using the second generation US contrast media. The common pitfalls for each type of lesion are discussed. The recent developments in US contrast media and specific imaging techniques have been a major advance and this technique, in view of the intrinsic advantages of US, will undoubtedly gain popularity in the years to come.展开更多
目的探讨肺灌注显像判定肺心病患者肺动脉高压的程度及其意义。方法对28例肺心病患者及10例正常受试者行99mTc-MAA单光子发射计算机断层测定,测量肺灌注显像上、下肺野核素计数比值,同时应用超声检测收缩期三尖瓣返流压力阶差(the tricu...目的探讨肺灌注显像判定肺心病患者肺动脉高压的程度及其意义。方法对28例肺心病患者及10例正常受试者行99mTc-MAA单光子发射计算机断层测定,测量肺灌注显像上、下肺野核素计数比值,同时应用超声检测收缩期三尖瓣返流压力阶差(the tricusp id valve regurgitation pressure grad ient b iggest,TRPG)估测肺动脉压(pu lmo-nary artery pressure,PAP)作对照。结果肺动脉压力轻度升高时,肺上、下肺野核素计数比值高于正常对照组,组间存在有显著差异(P<0.01),且肺上、下肺野核素计数比值与超声检测肺动脉压值呈正相关(r=0.82,t=7.31,P<0.01)。结论肺灌注显像属先进的无创性技术,可应用来判定肺动脉高压的程度,联合心脏超声检测在肺心病的诊治上有重要意义。展开更多
AIM: To assess the efficacy and safety of ultrasound guided percutaneous cholecystostomy (PC) in the treatment of acute cholecystitis in a well-defined high risk patients under general anesthesia. METHODS: The data of...AIM: To assess the efficacy and safety of ultrasound guided percutaneous cholecystostomy (PC) in the treatment of acute cholecystitis in a well-defined high risk patients under general anesthesia. METHODS: The data of 27 consecutive patients who underwent percutaneous transhepatic cholecystostomy for the management of acute cholecystitis from January 1999 to June 2003 was retrospectively evaluated. All of the patients had both clinical and sonographic signs of acute cholecystitis and had comorbid diseases. RESULTS: Ultrasound revealed gallbladder stones in 25 patients and acalculous cholecystitis in two patients. Cholecystostomy catheters were removed 14-32 d (mean 23 d) after the procedure in cases where complete regression of all symptoms was achieved. There were statistically significant reductions in leukocytosis, (13.7 × 103 ± 1.3 × 103 μg/L vs 13 × 103 ± 1 × 103 μg/L, P < 0.05 for 24 h after PC; 13.7 × 103 ± 1.3 × 103 μg/L vs 8.3 × 103 ± 1.2 × 103 μg/L, P < 0.0001 for 72 h after PC), C -reactive protein (51.2 ± 18.5 mg/L vs 27.3 ± 10.4 mg/L, P < 0.05 for 24 h after PC; 51.2 ± 18.5 mg/L vs 5.4 ± 1.5 mg/L, P < 0.0001 for 72 h after PC), and fever (38 ± 0.35℃ vs 37.3 ± 0.32℃, P < 0.05 for 24 h after PC; 38 ± 0.35℃ vs 36.9 ± 0.15℃, P < 0.0001 for 72 h after PC). Sphincterotomy and stone extraction was performed successfully with endoscopic retrograde cholangio-pancreatography (ERCP) in three patients. After cholecystostomy, 5 (18%) patients underwent delayed cholecystectomy without any complications. Three out of 22 patients were admitted with recurrent acute cholecystitis during the follow-up and recoveredwith medical treatment. Catheter dislodgement occurred in three patients spontaneously, and two of them were managed by reinsertion of the catheter. CONCLUSION: As an alternative to surgery, percutan- eous cholecystostomy seems to be a safe method in critically ill patients with acute cholecystitis and can be performed with low mortality and morbidity. Delayed cholecystectomy a展开更多
基金the Initiative Fund of Ministryof Education for Returned Overseas Scholars,No.491010-G50040
文摘AIM: To investigate the clinical pathologic features of gastrointestinal leiomyoma and the diagnostic value of endoscopic ultrasonography (EUS) on gastrointestinal leiomyoma.METHODS: A total of 106 patients with gastrointestinal leiomyoma diagnosed with EUS were studied. The location,size and layer origin of gastric and esophageal leiomyomas were analyzed and compared. The histological diagnosis of the resected specimens by endoscopy or surgery in some patients was compared with their results of EUS.RESULTS: The majority of esophageal leiomyomas were located in the middle and lower part of the esophagus and their size was smaller than 1.0 cma, and 62.1% of esophageal leiomyomas originated from the muscularis mucosae. Most of the gastric leiomyomas were located in the body and fundus of the stomach with a size of 1-2 cm. Almost all gastric leiomyomas (94.2%) originated from the muscularis propria. The postoperative histological results of 54 patients treated by endoscopic resection or surgical excision were completely consistent with the preoperative diagnosis of EUS,and the diagnostic specificity of EUS to gastrointestinal leiomyoma was 94.7%.CONCLUSION: The size and layer origin of esophageal leiomyomas are different from that of gastric leiomyomas.Being safe and accurate, EUS is the best method not only for gastrointestinal leiomyoma diagnosis but also for the follow-up of patients.
基金Supported by Research Grant from the British Medical Research Council, Pfizer Global Research (Sandwich, UK) and the United Kingdom Department of Health Research and Development Fund. SM is funded by a clinical and research fellowship from the Société des Radiologistes de l’Hpital St-Franois d’Assise, Québec, Canada
文摘Ultrasound (US) is often the first imaging modality employed in patients with suspected focal liver lesions. The role of US in the characterisation of focal liver lesions has been transformed with the introduction of specific contrast media and the development of specialized imaging techniques. Ultrasound now can fully characterise the enhancement pattern of hepatic lesions, similar to that achieved with contrast enhanced multiphasic computed tomography (CT) and magnetic resonance imaging (MRI). US contrast agents are safe, well-tolerated and have very few contraindications. Furthermore, real-time evaluation of the vascularity of focal liver lesions has become possible with the use of the newer microbubble contrast agents. This article reviews the enhancement pattern of the most frequent liver lesions seen, using the second generation US contrast media. The common pitfalls for each type of lesion are discussed. The recent developments in US contrast media and specific imaging techniques have been a major advance and this technique, in view of the intrinsic advantages of US, will undoubtedly gain popularity in the years to come.
文摘目的探讨肺灌注显像判定肺心病患者肺动脉高压的程度及其意义。方法对28例肺心病患者及10例正常受试者行99mTc-MAA单光子发射计算机断层测定,测量肺灌注显像上、下肺野核素计数比值,同时应用超声检测收缩期三尖瓣返流压力阶差(the tricusp id valve regurgitation pressure grad ient b iggest,TRPG)估测肺动脉压(pu lmo-nary artery pressure,PAP)作对照。结果肺动脉压力轻度升高时,肺上、下肺野核素计数比值高于正常对照组,组间存在有显著差异(P<0.01),且肺上、下肺野核素计数比值与超声检测肺动脉压值呈正相关(r=0.82,t=7.31,P<0.01)。结论肺灌注显像属先进的无创性技术,可应用来判定肺动脉高压的程度,联合心脏超声检测在肺心病的诊治上有重要意义。
文摘AIM: To assess the efficacy and safety of ultrasound guided percutaneous cholecystostomy (PC) in the treatment of acute cholecystitis in a well-defined high risk patients under general anesthesia. METHODS: The data of 27 consecutive patients who underwent percutaneous transhepatic cholecystostomy for the management of acute cholecystitis from January 1999 to June 2003 was retrospectively evaluated. All of the patients had both clinical and sonographic signs of acute cholecystitis and had comorbid diseases. RESULTS: Ultrasound revealed gallbladder stones in 25 patients and acalculous cholecystitis in two patients. Cholecystostomy catheters were removed 14-32 d (mean 23 d) after the procedure in cases where complete regression of all symptoms was achieved. There were statistically significant reductions in leukocytosis, (13.7 × 103 ± 1.3 × 103 μg/L vs 13 × 103 ± 1 × 103 μg/L, P < 0.05 for 24 h after PC; 13.7 × 103 ± 1.3 × 103 μg/L vs 8.3 × 103 ± 1.2 × 103 μg/L, P < 0.0001 for 72 h after PC), C -reactive protein (51.2 ± 18.5 mg/L vs 27.3 ± 10.4 mg/L, P < 0.05 for 24 h after PC; 51.2 ± 18.5 mg/L vs 5.4 ± 1.5 mg/L, P < 0.0001 for 72 h after PC), and fever (38 ± 0.35℃ vs 37.3 ± 0.32℃, P < 0.05 for 24 h after PC; 38 ± 0.35℃ vs 36.9 ± 0.15℃, P < 0.0001 for 72 h after PC). Sphincterotomy and stone extraction was performed successfully with endoscopic retrograde cholangio-pancreatography (ERCP) in three patients. After cholecystostomy, 5 (18%) patients underwent delayed cholecystectomy without any complications. Three out of 22 patients were admitted with recurrent acute cholecystitis during the follow-up and recoveredwith medical treatment. Catheter dislodgement occurred in three patients spontaneously, and two of them were managed by reinsertion of the catheter. CONCLUSION: As an alternative to surgery, percutan- eous cholecystostomy seems to be a safe method in critically ill patients with acute cholecystitis and can be performed with low mortality and morbidity. Delayed cholecystectomy a
