scholarly journals Over-the-Scope Clip-Associated Endoscopic Muscular Dissection for Seven Cases of Small Gastric Submucosal Tumor: A Video-Based Case Series

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Xin Li ◽  
Rongfen Wei ◽  
Jianfu Qin ◽  
Fei Qin ◽  
Peng Peng ◽  
...  
Keyword(s):  
Submucosal Tumor ◽  
Gastric Wall ◽  
Postoperative Bleeding ◽  
Case Series ◽  
Interventional Therapy ◽  
Long Term Effect ◽  
Novel Method ◽  
Over The Scope Clip ◽  
Titanium Clips ◽  
Short Time

Objectives. To evaluate the methodology, feasibility, safety, and efficacy of a novel method called over-the-scope clip- (OTSC-) associated endoscopic muscular dissection for small GSMT. Methods. A pilot study on small GSMT   diameter ≤ 1  cm was performed. OTSC-associated endoscopic muscular dissection was based on the requirement of OTSC apparatus and ESD technique; after ligaturing the bottom of small GSMT by OTSC, ESD was performed to resect the tumors, and the wounds of ESD were closed by clips finally. All the patients were followed up for more than 3 months, and the complications during and after OTSC-associated endoscopic muscular dissection were recorded. Results. A total of 7 consecutive patients with small GSMT were included. All tumors were completely dissected without any perforation or infection during and after the procedure in all cases, while three patients had mild abdominal pain, and one experienced postoperative bleeding after the procedure which was treated by the endoscopy with titanium clips. All the patients were followed by endoscopy three months later, all the wounds healed well, and all the OTSCs were still in the gastric wall. Conclusions. OTSC-associated endoscopic muscular dissection as a novel endoscopic interventional therapy should be a convenient, safe, and effective therapy for small GSMT. The short-time outcome is excellent, whereas long-term effect is unclear, and the further follow-up is needed to schedule.

scholarly journals Examine the Availability and Safety of Mucosal Cutting Biopsy Technique for Diagnosis of Gastric Submucosal Tumor

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Kazuhiro Mizukami ◽  
Osamu Matsunari ◽  
Ryo Ogawa ◽  
Yuka Hirashita ◽  
Kazuhisa Okamoto ◽  
...  
Keyword(s):  
Diagnostic Yield ◽  
Submucosal Tumor ◽  
Postoperative Bleeding ◽  
Case Series ◽  
Pathological Diagnosis ◽  
Maximum Diameter ◽  
Tumor Diameter ◽  
Safe Procedure ◽  
Submucosal Tumors ◽  
Case Series Study

Objectives. Differentiating gastrointestinal stromal tumor (GIST) from other submucosal tumors (SMTs) is important in diagnosing SMT. GIST is an immunohistological diagnosis that cannot be made from images alone. Tissue sampling of tumor sites is thus becoming increasingly important. In this study, the utility and associated complications of mucosal cutting biopsy (MCB) for gastric SMTs were investigated. Methods. This was a case series study. The subjects were patients aged ≥20 years old in whom an SMT was seen on esophagogastroduodenography and who underwent MCB between January 2012 and December 2016. Patient information, endoscopy findings, gastric SMT size, pathological diagnosis, and other information were gathered from medical records. The SMT size was the maximum diameter that could be visualized on EUS. The pathological diagnosis was made with hematoxylin-eosin staining, with immunostaining added to diagnose GIST. The endpoint was the histopathological diagnostic yield. Risk assessment using the Miettinen classification and modified Fletcher classification was also done for GISTs treated with surgery. Results. The mean tumor diameter was 15.4 mm. The tumor diameter was ≥20 mm in seven patients and <20 mm in 23 patients. The tissue-acquiring rate was 93.3%. A histological diagnosis could not be made in two patients. The only complication was that bleeding required endoscopic hemostasis during the procedure in one patient, but no subsequent bleeding or no postoperative bleeding was seen. Conclusions. MCB is an appropriate and safe procedure in the diagnosis of gastric SMTs. Many hospitals will be able to perform MCB if they have the environment, including skills and equipment, to perform endoscopic submucosal dissection.

Closure of Gastrointestinal Fistulas and Leaks with the Over-the-Scope Clip: Case-Series Analysis

2021 ◽  
Author(s):  
Abdullah Senlikci ◽  
Tahsin Dalgic ◽  
Ahmet Alyanak ◽  
Erdal Birol Bostanci
Keyword(s):  
Case Series ◽  
Series Analysis ◽  
Over The Scope Clip

scholarly journals Platypnoea–orthodeoxia syndrome induced by short-term weight loss: a case series

2020 ◽  
Author(s):  
Yudai Tamura ◽  
Tomohiro Sakamoto
Keyword(s):  
Weight Loss ◽  
Septal Defect ◽  
Case Series ◽  
Transoesophageal Echocardiography ◽  
Sitting Position ◽  
Short Time Period ◽  
Time Period ◽  
Uncommon Condition ◽  
The Right ◽  
Short Time

Abstract Background Platypnoea–orthodeoxia syndrome (POS) is an uncommon condition characterized by dyspnoea and arterial desaturation in the standing or sitting position that improves in the supine position. Case summary We report two cases of POS caused by an atrial septal defect (ASD) and a patent foramen ovale (PFO). Both cases reported a recent decrease in body weight of more than 10 kg in a short time period. Transoesophageal echocardiography (TOE) with agitated saline bubble study revealed and a large amount of contrast bubble through the ASD (Patient 1) or the PFO (Patient 2) from the right atrium to the left atrium in the sitting position. Both patients were diagnosed by the finding of positional dyspnoea and the results of TOE using agitated saline bubble contrast. Discussion Taken together, their presentations suggest that weight loss in a short time period could be a pathogenic factor for POS.

Long-Term Evaluation of the Roux-Elmslie-Trillat Procedure for Patellar Instability

2005 ◽  
Vol 33 (8) ◽  
pp. 1220-1223 ◽  
Author(s):  
Joseph R. Carney ◽  
Timothy S. Mologne ◽  
Michael Muldoon ◽  
Jay S. Cox
Keyword(s):  
Confidence Interval ◽  
Case Series ◽  
Level Of Evidence ◽  
Long Term Effect ◽  
Functional Scores ◽  
Study Population ◽  
Term Evaluation ◽  
Subluxation Of The Patella

Background Few published articles exist reporting the long-term evaluation of the Roux-Elmslie-Trillat procedure. Purpose To assess the long-term effect of the Roux-Elmslie-Trillat procedure in preventing recurrent subluxation and dislocation of the patella. Study Design Case series; Level of evidence, 4. Methods Eighteen patients who underwent the Roux-Elmslie-Trillat procedure for dislocation or subluxation of the patella were identified from a group previously evaluated at a mean follow-up of 3 years. The prevalence of recurrent subluxation or dislocation at a mean follow-up of 26 years was compared with the prevalence reported at the mean follow-up of 3 years. Although not the focus of this study, Cox functional scores were obtained from the smaller group and compared with the results at the 3-year follow-up. Results Seven percent (95% confidence interval, 0.00-0.32) of the patients had recurrent subluxation at 26 years compared with 7% (95% confidence interval, 0.03-0.13) of the study population reported at 3 years (P = 1.00). Fifty-four percent (95% confidence interval, 0.27-0.79) rated their affected knee as good or excellent at 26 years compared with 73% (95% confidence interval, 0.64-0.81) of the larger study population reported at 3 years (P = .14). Conclusion The prevalence of recurrent subluxation and dislocation in patients with patellofemoral malalignment who underwent the Roux-Elmslie-Trillat procedure for dislocation or subluxation of the patella is similar at 3 and 26 years after the procedure. The long-term functional status of the affected knee in patients who underwent the Roux-Elmslie-Trillat procedure declined.

Gastric wall abscess presenting as a submucosal tumor: Case report

2003 ◽  
Vol 57 (7) ◽  
pp. 959-962 ◽  
Author(s):  
Chien-Hua Chen ◽  
Chi-Chieh Yang ◽  
Yung-Hsiang Yeh ◽  
Min-Huo Hwang
Keyword(s):  
Case Report ◽  
Submucosal Tumor ◽  
Gastric Wall

Variable Speed Estimation for Wheel-Bearings with STFT and BP Neural Network

2014 ◽  
Vol 945-949 ◽  
pp. 1112-1115
Author(s):  
Yuan Zhou ◽  
Bin Chen ◽  
Bao Cheng Gao ◽  
Si Jie Zhang
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Background Noise ◽  
Speed Estimation ◽  
Variable Speed ◽  
Short Time Fourier Transform ◽  
Time Frequency ◽  
Novel Method ◽  
Instantaneous Frequencies ◽  
Short Time

For the variable speed estimation of wheel-bearings in strong background noise, a novel method with the short-time Fourier transform and BP neural network (STFT-BPNN) is proposed. In the method, it calculates the time-frequency spectrum with STFT technique. Then the instantaneous frequency is estimated by peak detection. Taking the instantaneous frequencies as the input vectors, the BP neural network is trained to fit the discrete instantaneous frequencies. The effectiveness of proposed method is demonstrated by simulation. Experimental results show that proposed method provides better performance on variable speed estimation for wheel-bearings.

scholarly journals Gastric Ulcer Perforation with Subsequent Gastric Wall Abscess Mimicking Submucosal Tumor Detected by Endoscopic Ultrasound

2008 ◽  
Vol 16 (1) ◽  
pp. 74-78
Author(s):  
Tsung-Jung Tsai ◽  
Yuan-Horng Yan ◽  
Ching-Hsiu Huang ◽  
Chi-Wen Tu ◽  
Wen-Chuang Wang ◽  
...  
Keyword(s):  
Gastric Ulcer ◽  
Endoscopic Ultrasound ◽  
Submucosal Tumor ◽  
Gastric Wall ◽  
Ulcer Perforation

scholarly journals Multiclass Radio Frequency Interference Detection and Suppression for SAR Based on the Single Shot MultiBox Detector

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 4034 ◽  
Author(s):  
Junfei Yu ◽  
Jingwen Li ◽  
Bing Sun ◽  
Jie Chen ◽  
Chunsheng Li
Keyword(s):  
Radio Frequency ◽  
Pulse Compression ◽  
Radio Frequency Interference ◽  
Single Shot ◽  
Separation Problem ◽  
Underdetermined Blind Source Separation ◽  
Time Frequency ◽  
Interference Signals ◽  
Novel Method ◽  
Short Time

Radio frequency interference (RFI) is known to jam synthetic aperture radar (SAR) measurements, severely degrading the SAR imaging quality. The suppression of RFI in SAR echo signals is usually an underdetermined blind source separation problem. In this paper, we propose a novel method for multiclass RFI detection and suppression based on the single shot multibox detector (SSD). First, an echo-interference dataset is established by randomly combining the target signal with various types of RFI in a simulation, and the time–frequency form of the dataset is obtained by utilizing the short-time Fourier transform (STFT). Next, the time–frequency dataset acts as input data to train the SSD and obtain a network that is capable of detecting, identifying and estimating the interference. Finally, all of the interference signals are exactly reconstructed based on the prediction results of the SSD and mitigated by an adaptive filter. The proposed method can effectively increase the signal-to-interference-noise ratio (SINR) of RFI-contaminated SAR echoes and improve the peak sidelobe ratio (PSLR) after pulse compression. The simulated experimental results validate the effectiveness of the proposed method.

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