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Li X, Zhang C, Yao L, Zhang J, Zhang K, Feng H, Yu H. A deep learning-based system to identify originating mural layer of upper gastrointestinal submucosal tumors under EUS. Endosc Ultrasound 2023; 12:465-471. [PMID: 38948124 PMCID: PMC11213599 DOI: 10.1097/eus.0000000000000029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/02/2024] Open
Abstract
Background and Objective EUS is the most accurate procedure to determine the originating mural layer and subsequently select the treatment of submucosal tumors (SMTs). However, it requires superb technical and cognitive skills. In this study, we propose a system named SMT Master to determine the originating mural layer of SMTs under EUS. Materials and Methods We developed 3 models: deep convolutional neural network (DCNN) 1 for lesion segmentation, DCNN2 for mural layer segmentation, and DCNN3 for the originating mural layer classification. A total of 2721 EUS images from 201 patients were used to train the 3 models. We validated our model internally and externally using 283 images from 26 patients and 172 images from 26 patients, respectively. We applied 368 images from 30 patients for the man-machine contest and used 30 video clips to test the originating mural layer classification. Results In the originating mural layer classification task, DCNN3 achieved a classification accuracy of 84.43% and 80.68% at internal and external validations, respectively. In the video test, the accuracy was 80.00%. DCNN1 achieved Dice coefficients of 0.956 and 0.776 for lesion segmentation at internal and external validations, respectively, whereas DCNN2 achieved Dice coefficients of 0.820 and 0.740 at internal and external validations, respectively. The system achieved 90.00% accuracy in classification, which is comparable with that of EUS experts. Conclusions Our proposed system has the potential to solve difficulties in determining the originating mural layer of SMTs in EUS procedures, which relieves the EUS learning pressure of physicians.
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Affiliation(s)
- Xun Li
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Chenxia Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Liwen Yao
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Jun Zhang
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Kun Zhang
- Wuhan Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Hui Feng
- Information center, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Honggang Yu
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Key Laboratory of Hubei Province for Digestive System Disease, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
- Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
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Guo J, Liu Z, Sun S, Wang S, Ge N, Liu X, Wang G, Liu W. Endosonography-assisted diagnosis and therapy of gastrointestinal submucosal tumors. Endosc Ultrasound 2014. [PMID: 24949380 DOI: 10.4103/2303-9027.117655] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Submucosal tumors (SMTs) are usually discovered fortuitously during routine endoscopy, including various non-neoplastic and neoplastic conditions. Endoscopic ultrasound (EUS) is considered to be the best imaging procedure to characterize SMTs and to determine the need for further treatment. In this review, the following issues will be addressed: The role of EUS in diagnosis for SMTs, tissue diagnosis for SMTs and the influence of EUS on endoscopic resection techniques for SMTs.
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Affiliation(s)
- Jintao Guo
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Zhijun Liu
- Department of Ultrasound, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Siyu Sun
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Sheng Wang
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Nan Ge
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xiang Liu
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Guoxin Wang
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Wen Liu
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
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Guo J, Liu Z, Sun S, Wang S, Ge N, Liu X, Wang G, Liu W. Endosonography-assisted diagnosis and therapy of gastrointestinal submucosal tumors. Endosc Ultrasound 2014; 2:125-33. [PMID: 24949380 PMCID: PMC4062264 DOI: 10.7178/eus.06.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 07/01/2013] [Indexed: 12/14/2022] Open
Abstract
Submucosal tumors (SMTs) are usually discovered fortuitously during routine endoscopy, including various non-neoplastic and neoplastic conditions. Endoscopic ultrasound (EUS) is considered to be the best imaging procedure to characterize SMTs and to determine the need for further treatment. In this review, the following issues will be addressed: The role of EUS in diagnosis for SMTs, tissue diagnosis for SMTs and the influence of EUS on endoscopic resection techniques for SMTs.
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Affiliation(s)
- Jintao Guo
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Zhijun Liu
- Department of Ultrasound, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Siyu Sun
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Sheng Wang
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Nan Ge
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Xiang Liu
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Guoxin Wang
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Wen Liu
- Endoscopic Center, The Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
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Komori K, Akahoshi K, Kubokawa M, Motomura Y, Oya M, Ihara E, Nakamura K. Endoscopic submucosal dissection for rectal carcinoid tumour using the Clutch Cutter. ANZ J Surg 2014; 84:847-51. [PMID: 24754306 DOI: 10.1111/ans.12643] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND To reduce the risk of complications related to endoscopic submucosal dissection (ESD) using knives, we developed the Clutch Cutter (CC), which can grasp and incise the target tissue similarly to biopsy techniques using an electrosurgical current. The aim of this study was to evaluate the efficacy and safety of ESD using the CC for removal of rectal carcinoid tumours. METHODS Between December 2009 and December 2011, we prospectively enrolled seven patients (seven lesions) on 7 different days. Patients were endoscopically diagnosed with rectal subepithelial lesions (upper rectum, n = 3; lower rectum, n = 4) within the level 3 layer and without lymph node involvement, with the diagnosis confirmed by preliminary endoscopy, endoscopic ultrasound and endoscopic biopsies. ESD using the CC was performed in all cases, and the therapeutic efficacy, safety and tumour recurrence were assessed. RESULTS All lesions were treated easily and safely, and there were no inadvertent incisions. En bloc resection was obtained in all cases, and histologic tumour-free lateral/basal margins were obtained in six of the seven patients. No delayed haemorrhage, perforation or tumour recurrence occurred. CONCLUSION ESD using the CC appears to be an easy, safe and technically efficient method for resecting rectal carcinoid tumour.
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Affiliation(s)
- Keishi Komori
- Department of Gastroenterology, Aso Iizuka Hospital, Iizuka, Japan
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Long-term prognosis of an endoscopically treated rectal neuroendocrine tumor: 10-year experience in a single institution. Eur J Gastroenterol Hepatol 2012; 24:978-83. [PMID: 22647741 DOI: 10.1097/meg.0b013e3283551e0b] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM The endoscopic techniques for treating a small rectal neuroendocrine tumor (NET) are performed in most large centers; however, the endoscopic management of this condition is not well established. This study was designed to determine the long-term prognosis of endoscopically resected NET. METHODS We prospectively studied patients with endoscopically treated rectal NET in Seoul St Mary's hospital, between January 2000 and June 2010. The long-term outcomes were analyzed in association with the pathological complete resection and resection procedures. RESULTS Seventy-seven patients (48 men and 29 women; mean age, 52.3 years; range, 23-77 years) were included. The average NET size was 7.0±2.8 mm (range, 3-16 mm). There was no procedure-related complication. En-bloc removal was achieved for all lesions, and the rate of histological complete resection was 75.3% (58/77). Histological complete resection rates were 71.4% (10/14) by conventional endoscopic mucosal resection (EMR), 74.1% (43/58) by a two-channel EMR, and 100.0% (5/5) by endoscopic submucosal dissection (ESD). Among six patients with incomplete histological resection, two underwent additional EMR, two underwent transanal endoscopic microsurgery, and two underwent low anterior section with lymph node dissection. The remaining 13 patients with 'possible' remnant NET underwent regular endoscopic surveillance without additional resection. In the latter group, only one patient had local recurrence, detected on regular colonoscopic surveillance, after 56 months and was treated with additional EMR. All of the patients are alive and 98.7% (76/77) of the patients are free from disease during the follow-up periods. CONCLUSION Endoscopic resection is a safe and effective modality and may potentially be used for the treatment of NETs smaller than 15 mm in diameter, those confined to the submucosal layer, and those without metastasis. Local treatment was believed to be curative in cases with complete histological resection. In addition, this treatment may have an excellent prognosis in patients with 'possible' remnant NET.
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Baek IH. Endoscopic Submucosal Dissection or Conventional Endoscopic Mucosal Resection Is an Effective and Safe Treatment for Rectal Carcinoid Tumors: A Retrospective Study. J Laparoendosc Adv Surg Tech A 2010; 20:329-31. [DOI: 10.1089/lap.2009.0373] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Il Hyun Baek
- Department of Internal Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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Abstract
BACKGROUND Various methods have been reported for the endoscopic treatment of rectal carcinoid tumors. The present study was designed to identify the optimal treatment strategy for an endoscopic resection. METHODS Forty rectal carcinoid tumors of 38 patients were treated endoscopically. The indication criteria, complete resection rate, selection of treatment, local recurrence, distant metastases, and complications were analyzed. All tumors were estimated to measure 1 cm or less in diameter, without muscular invasion, atypical features, and lymph node metastases to the pararectal region. RESULTS Complete resection of the lesions was obtained in 75.0% (30/40). The complete resection rates were 20.0% (1/5) by conventional polypectomy, 84.6% (22/26) by a two-channel endoscopic mucosal resection, and 77.8% (7/9) by endoscopic submucosal dissection. The 10 cases that did not show a clear submucosal layer after initial endoscopic treatment received additional endoscopic microwave coagulation therapy. There were no local or distant recurrences in the followed-up periods (median, 6.4 years). No difference was observed in the complete resection rate between two-channel endoscopic mucosal resection and endoscopic submucosal dissection. CONCLUSIONS Small carcinoid tumors measuring less than 1 cm in diameter can therefore be managed endoscopically with no recurrence or spread. The selection of endoscopic treatment should be made after taking such factors as cost-effectiveness, expertise, and experience into careful consideration.
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Akahoshi K, Motomura Y, Kubokawa M, Matsui N, Oda M, Okamoto R, Endo S, Higuchi N, Kashiwabara Y, Oya M, Akahane H, Akiba H. Endoscopic submucosal dissection of a rectal carcinoid tumor using grasping type scissors forceps. World J Gastroenterol 2009; 15:2162-5. [PMID: 19418591 PMCID: PMC2678589 DOI: 10.3748/wjg.15.2162] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Endoscopic submucosal dissection (ESD) with a knife is a technically demanding procedure associated with a high complication rate. The shortcomings of this method are the inability to fix the knife to the target lesion, and compression of the lesion. These can lead to major complications such as perforation and bleeding. To reduce the risk of complications related to ESD, we developed a new grasping type scissors forceps (GSF), which can grasp and incise the targeted tissue using electrosurgical current. Colonoscopy on a 55-year-old woman revealed a 10-mm rectal submucosal nodule. The histological diagnosis of the specimen obtained by biopsy was carcinoid tumor. Endoscopic ultrasonography demonstrated a hypoechoic solid tumor limited to the submucosa without lymph node involvement. It was safely and accurately resected without unexpected incision by ESD using a GSF. No delayed hemorrhage or perforation occurred. Histological examination confirmed the carcinoid tumor was completely excised with negative resection margin.
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Mashimo Y, Matsuda T, Uraoka T, Saito Y, Sano Y, Fu K, Kozu T, Ono A, Fujii T, Saito D. Endoscopic submucosal resection with a ligation device is an effective and safe treatment for carcinoid tumors in the lower rectum. J Gastroenterol Hepatol 2008; 23:218-21. [PMID: 18289355 DOI: 10.1111/j.1440-1746.2008.05313.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Various methods for complete endoscopic resection of rectal carcinoid tumors have been reported; however, the number of cases investigated in each study has been limited. The aim of the present study was to clarify the clinical usefulness of a novel technique named endoscopic submucosal resection with a ligation device (ESMR-L) in a large number of rectal carcinoid tumors. PATIENTS AND METHODS Between January 1999 and March 2005, a total of 61 patients with 63 rectal carcinoid tumors estimated at 10 mm or less in diameter, without atypical features and resected by ESMR-L were recruited for this analysis. The complete resection rate, complications associated with the procedure, local recurrence, and distant metastases were evaluated. RESULTS Sixty-one patients were 36 males and 25 females with a mean age of 59 +/- 11 years (24-76 years). Tumor size ranged from 2 to 12 mm in diameter, with an average size of 6.4 +/- 2.4 mm. Fifty-nine lesions (93.6%) were located in the lower rectum (Rb), three in the upper rectum (Ra) and one in the recto-sigmoid colon (Rs). In total, 60 out of 63 lesions (95.2%) were histologically determined to be completely resected. The complete resection rate for lesions located in the Rb was 98.3%, which was significantly higher than that for lesions in Ra and Rs (50%). Minor bleeding associated with the procedure occurred in five lesions (7.9%), but all cases were successfully managed with hemoclips. Histopathologically, all tumors were located in the submucosal layer, and all were classified as classical-type carcinoids without lymphovascular invasion. Neither local recurrence nor distant metastasis was detected during a median follow-up period of 24 months. CONCLUSION In a large number of cases, ESMR-L proved to be a useful and safe procedure to resect rectal carcinoid tumors 10 mm or less in diameter, especially for those located in the Rb.
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Affiliation(s)
- Yumi Mashimo
- Division of Endoscopy, National Cancer Center Hospital, Tokyo, Japan.
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Affiliation(s)
- Gerard A Isenberg
- Division of Gastroenterology, University Hospitals of Cleveland, Case Western Reserve University, Ohio 44106-5066, USA
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Ono A, Fujii T, Saito Y, Matsuda T, Lee DTY, Gotoda T, Saito D. Endoscopic submucosal resection of rectal carcinoid tumors with a ligation device. Gastrointest Endosc 2003; 57:583-7. [PMID: 12665777 DOI: 10.1067/mge.2003.142] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Local endoscopic mucosal resection of rectal carcinoid tumors is often associated with margin involvement that requires further intervention. The efficacy of resection of these tumors with endoscopic submucosal resection with a ligation device (ESMR-L) was evaluated. METHODS Fourteen rectal carcinoid tumors were treated by ESMR-L between 1999 and 2002. ESMR-L was performed with a conventional colonoscope with an attached band-ligator device. For comparison, 14 rectal carcinoid tumors, treated by either endoscopic mucosal resection or polypectomy between 1990 and 1997, were evaluated as historical controls. All tumors were estimated to be 1 cm or less in diameter. OBSERVATIONS There were no differences between the 2 groups in terms of age, gender, or tumor size. For 6 (43%) patients in the control group, there was tumor involvement at the margin of the resection specimen, whereas all tumors removed by ESMR-L had histopathologically proven negative margins (p < 0.05). The mean vertical resection margin also was significantly deeper in the ESMR-L group (p < 0.05). There was no complication of any procedure. CONCLUSIONS ESMR-L is technically simple, minimally invasive, and safe for treatment of small rectal carcinoid tumors contained within the submucosa. ESMR-L provides a deeper resection margin compared with that obtained with conventional endoscopic mucosal resection or polypectomy.
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Affiliation(s)
- Akiko Ono
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital, Tokyo, Japan
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