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Bae JY, Ryu CB, Lee MS, Dua KS. Long-term outcomes of endoscopic submucosal dissection for undifferentiated type early gastric cancer over 2 cm with R0 resection. World J Gastrointest Endosc 2024; 16:326-334. [PMID: 38946856 PMCID: PMC11212511 DOI: 10.4253/wjge.v16.i6.326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Revised: 02/24/2024] [Accepted: 05/08/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND Endoscopic submucosal dissection (ESD) for over 2 cm in size undifferentiated type (UD type) early gastric cancer (EGC) confined to the mucosa is not only challenging, but also long-term outcomes are not well known. AIM To evaluate the long-term outcomes of ESD done for UD type EGCs confined to the mucosa over 2 cm in size and compare the results with those where the lesions were less than 2 cm. METHODS 143 patients with UD type EGC confirmed on histology after ESD at a tertiary hospital were reviewed. Cases with synchronous and metachronous lesions and a case with emergency surgery after ESD were excluded. A total of 137 cases were enrolled. 79 cases who underwent R0 resection were divided into 2 cm or less (group A) and over 2 cm (group B) in size. RESULTS Among 79 patients who underwent R0 resection, the number in group A and B were 51 and 28, respectively. The mean follow-up period (SD) was 79.71 ± 45.42 months. There was a local recurrence in group A (1/51, 2%) and group B (1/28, 3.6%) respectively. This patient in group A underwent surgery while the patient in group B underwent repeated ESD with no further recurrences in both patients. There was no regional lymph node metastasis, distant metastasis, and deaths in both groups. With R0 resection strategy for ESD on lesions over 2 cm, 20.4% (28/137) of patients were able to avoid surgery compared with expanded indication. CONCLUSION If R0 resection is achieved by ESD, UD type EGCs over 2 cm also showed good and similar clinical outcomes as compared to lesions less than 2 cm when followed for over 5 years. With R0 resection strategy, several patients can avoid surgery.
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Affiliation(s)
- Jun Yong Bae
- Internal Medicine and Digestive Disease Center, Seoul Medical Center, Seoul 02053, South Korea
| | - Chang Beom Ryu
- Internal Medicine and Digestive Disease Center and Research Institute, Soon Chun Hyang University of School of Medicine, Bucheon 14584, South Korea
| | - Moon Sung Lee
- Internal Medicine and Digestive Disease Center and Research Institute, Soon Chun Hyang University of School of Medicine, Bucheon 14584, South Korea
| | - Kulwinder S Dua
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, United States
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Takemoto H, Kotachi T, Teshima H, Tamari H, Tsuboi A, Tanaka H, Yamashita K, Urabe Y, Ishikawa A, Oka S. Verrucous gastritis-like lesion in intramucosal Helicobacter pylori-uninfected signet ring cell carcinoma with poorly differentiated adenocarcinoma. Clin J Gastroenterol 2024; 17:412-418. [PMID: 38520641 PMCID: PMC11127841 DOI: 10.1007/s12328-024-01952-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 03/10/2024] [Indexed: 03/25/2024]
Abstract
In Japan, accessible Helicobacter pylori (Hp) eradication therapy is associated with an increase in the prevalence of gastric cancers (GCs) in Hp uninfected stomachs. Signet ring cell carcinoma (SRCC) is the most common of these GCs. Intramucosal SRCC with poorly differentiated adenocarcinoma (PDA) occurring in Hp uninfected gastric mucosa is rare; furthermore, many Hp uninfected pure SRCCs exhibit discoloration and flat or slightly depressed lesions, and morphological elevation is relatively rare. We report a case of intramucosal SRCC with PDA with an elevated, verrucous gastritis-like lesion in a 57-year-old male patient. In the present case, the PDA area showed dense tumor cell growth and coexisting desmoplastic and fibrotic reactions. Histopathology and immunohistochemical staining identified extensive fibromuscular obliteration with smooth muscle bundles extending from the muscularis mucosa into the lamina propria. The patient underwent curative endoscopic submucosal dissection. The reporting and analysis of such rare cases may lead to a better understanding of the characteristics of advanced Hp uninfected GCs.
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Affiliation(s)
- Hiroki Takemoto
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Takahiro Kotachi
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan.
| | - Hajime Teshima
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Hirosato Tamari
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Akiyoshi Tsuboi
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Hidenori Tanaka
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Ken Yamashita
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
| | - Yuji Urabe
- Department of Gastrointestinal Endoscopy and Medicine, Hiroshima University Hospital, Hiroshima, Japan
| | - Akira Ishikawa
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shiro Oka
- Department of Gastroenterology, Hiroshima University Hospital, 1-2-3 Kasumi, Minamiku, Hiroshima, 734-8553, Japan
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Li P, Li Z, Linghu E, Ji J. Chinese national clinical practice guidelines on the prevention, diagnosis, and treatment of early gastric cancer. Chin Med J (Engl) 2024; 137:887-908. [PMID: 38515297 PMCID: PMC11046028 DOI: 10.1097/cm9.0000000000003101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Gastric cancer is one of the most common malignant tumors in the digestive system in China. Few comprehensive practice guidelines for early gastric cancer in China are currently available. Therefore, we created the Chinese national clinical practice guideline for the prevention, diagnosis, and treatment of early gastric cancer. METHODS This clinical practice guideline (CPG) was developed in accordance with the World Health Organization's recommended process and with the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) in assessing evidence quality. We used the Evidence to Decision framework to formulate clinical recommendations to minimize bias and increase transparency in the CPG development process. We used the Reporting Items for practice Guidelines in HealThcare (RIGHT) statement and the Appraisal of Guidelines for Research and Evaluation II (AGREE II) as reporting and conduct guidelines to ensure completeness and transparency of the CPG. RESULTS This CPG contains 40 recommendations regarding the prevention, screening, diagnosis, treatment, and follow-up of early gastric cancer based on available clinical studies and guidelines. We provide recommendations for the timing of Helicobacter pylori eradication, screening populations for early gastric cancer, indications for endoscopic resection and surgical gastrectomy, follow-up interval after treatment, and other recommendations. CONCLUSIONS This CPG can lead to optimum care for patients and populations by providing up-to-date medical information. We intend this CPG for widespread adoption to increase the standard of prevention, screening, diagnosis, treatment, and follow-up of early gastric cancer; thereby, contributing to improving national health care and patient quality of life.
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Affiliation(s)
- Peng Li
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - Ziyu Li
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Enqiang Linghu
- Department of Gastroenterology and Hepatology, the First Medical Center, Chinese People’s Liberation Army General Hospital, Beijing 100853, China
| | - Jiafu Ji
- Department of Gastrointestinal Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing 100142, China
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Peng SP, Su QJ, Zheng LJ, Wang Z, Chen X, Liang XQ. Feasibility for the application of expanded endoscopic resection criteria in mucosal undifferentiated gastric cancer. Asian J Surg 2023; 46:3705-3709. [PMID: 37210260 DOI: 10.1016/j.asjsur.2023.04.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 03/25/2023] [Accepted: 04/26/2023] [Indexed: 05/22/2023] Open
Abstract
BACKGROUND & AIM The indication of endoscopic submucosal dissection (ESD) for mucosal undifferentiated early gastric cancer (EGC) remains controversial because of risk of lymph node metastasis (LNM). The aim of this study was to identify risk factors for lymph node metastasis (LNM) in mucosal undifferentiated EGC, and further to confirm feasibility of the ESD for the treatment of mucosal undifferentiated EGC. METHODS We retrospectively reviewed data of patients who underwent surgical resection with lymph node dissection of T1a stage primary gastric adenocarcinoma at three medical centers between 2012 and 2022. We evaluated the frequency of lymph node metastasis and the associated risk factors, as well as the lymph node metastasis rate in the expanded indication of mucosal undifferentiated EGC. RESULTS A total of 100 surgically treated patients with mucosal undifferentiated EGC were enrolled. LNM was irrelevant to the age, tumor size, location, and macroscopic type (all P > 0.05), while it was significantly associated with lymphovascular invasion (LVI, P <0.001). And logistic regression analysis showed that the LVI was the only significant risk factors for LNM (OR: 0.34, 95%CI: 0.06-0.204; P <0.001). Of 44 mucosal undifferentiated EGC patients satisfying the expanded indication of ESD, 3 patients (6.8%) showed LN metastasis, all of them with undifferentiated cancer without ulceration, less than 2.0 cm in size. CONCLUSIONS Because LNM is present in mucosal undifferentiated EGC patients who satisfied the expanded indication of ESD, ESD cannot be considered a better choice than surgery for all undifferentiated EGC patients. LVI was significant risk factors for LNM in patients with mucosal undifferentiated EGC.
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Affiliation(s)
- Shao-Peng Peng
- Department of Neurosurgery, Gansu Province People's Hospital, Gansu Province, China
| | - Qin-Jun Su
- Department of Pathology, The 940th of Joint Logistics Support Force of the Chinese People's Liberation, China
| | - Li-Juan Zheng
- Department of Gastroenterology, Gansu Province People's Hospital, Gansu Province, China
| | - Zhuo Wang
- Department of Pathology, Gansu Province People's Hospital, Gansu Province, China
| | - Xu Chen
- Department of Pathology, Gansu Province People's Hospital, Gansu Province, China
| | - Xiao-Qin Liang
- Department of Pathology, Gansu Province People's Hospital, Gansu Province, China.
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Kobashi M, Ishikawa S, Inaba T, Iwamuro M, Aoyama Y, Kagawa T, Takeuchi Y, Ando M, Nakamura S, Okada H. Diagnostic accuracy of frozen section biopsy for early gastric cancer extent during endoscopic submucosal dissection: a prospective study. Surg Endosc 2023; 37:6736-6748. [PMID: 37217685 PMCID: PMC10462503 DOI: 10.1007/s00464-023-10100-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 04/22/2023] [Indexed: 05/24/2023]
Abstract
BACKGROUND Accurate diagnosis of the lateral extent of early gastric cancer during endoscopic submucosal dissection (ESD) is crucial to achieve negative resection margins. Similar to intraoperative consultation with a frozen section in surgery, rapid frozen section diagnosis with endoscopic forceps biopsy may be useful in assessing tumor margins during ESD. This study aimed to evaluate the diagnostic accuracy of frozen section biopsy. METHODS We prospectively enrolled 32 patients undergoing ESD for early gastric cancer. Biopsy samples for the frozen sections were randomly collected from fresh resected ESD specimens before formalin fixation. Two different pathologists independently diagnosed 130 frozen sections as "neoplasia," "negative for neoplasia," or "indefinite for neoplasia," and the frozen section diagnosis was compared with the final pathological results of the ESD specimens. RESULTS Among the 130 frozen sections, 35 were from cancerous areas, and 95 were from non-cancerous areas. The diagnostic accuracies of the frozen section biopsies by the two pathologists were 98.5 and 94.6%, respectively. Cohen's kappa coefficient of diagnoses by the two pathologists was 0.851 (95% confidence interval: 0.837-0.864). Incorrect diagnoses resulted from freezing artifacts, a small volume of tissue, inflammation, the presence of well-differentiated adenocarcinoma with mild nuclear atypia, and/or tissue damage during ESD. CONCLUSIONS Pathological diagnosis of frozen section biopsy is reliable and can be applied as a rapid frozen section diagnosis for evaluating the lateral margins of early gastric cancer during ESD.
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Affiliation(s)
- Mayu Kobashi
- Department of Gastroenterology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan.
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Shigenao Ishikawa
- Department of Gastroenterology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
| | - Tomoki Inaba
- Department of Gastroenterology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
| | - Masaya Iwamuro
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Yuki Aoyama
- Department of Gastroenterology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Tomo Kagawa
- Department of Gastroenterology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
| | - Yasuto Takeuchi
- Department of Regenerative Medicine, Center for Innovative Clinical Medicine, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
| | - Midori Ando
- Department of Pathology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
| | - Satoko Nakamura
- Department of Pathology, Kagawa Prefectural Central Hospital, 1-2-1 Asahi-machi, Takamatsu, Kagawa, 760-8557, Japan
| | - Hiroyuki Okada
- Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan
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Watanabe A, McKendry GJ, Yip L, Donnellan F, Hamilton TD. Risk of lymph node metastasis in early gastric cancer for a Western population. J Surg Oncol 2023; 127:791-797. [PMID: 36583664 DOI: 10.1002/jso.27192] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Endoscopic resection (ER) of early gastric cancer (EGC) is increasingly used in Eastern countries due to their low rates of lymph node metastasis (LNM); however, there is a paucity of evidence in Western countries. We investigated LNM and its effect on overall survival (OS) in Western patients with EGC. METHODS Patients diagnosed with T1 gastric cancer between 2000 and 2017 were retrospectively evaluated. Univariate Kaplan-Meier, multivariate logistic and Cox-regression models were used to assess the associations between clinical characteristics, LNM, and OS. RESULTS Among 86 patients, median age was 68 years and 72% were male. Node positivity was 30%. Two percent of patients met the classical guidelines for ER and all were node-negative, while 16% met expanded criteria of which 14% were node-positive. T1b disease (odds ratio [OR] 41.2 [95% confidence interval [CI] 1.62-1048], p = 0.02) and lymphovascular/perineural invasion (OR 18.0 [95% CI 2.41-134], p = 0.01) were predictive of node positivity. The 5-year OS for node-negative and node-positive patients was 84% and 53% (p = 0.004), respectively. CONCLUSIONS The risk of LNM in Western patients with EGC is higher; therefore, generalizability of the expanded criteria for ER should be interpreted with caution.
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Affiliation(s)
- Akie Watanabe
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Geoffrey J McKendry
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lily Yip
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Fergal Donnellan
- Division of Gastroenterology, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Trevor D Hamilton
- Department of Surgery, University of British Columbia, Vancouver, British Columbia, Canada
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Li S, Tian X, Wei J, Shi Y, Zhang H, Huang Y. Long-term outcomes of additional surgery versus non-gastrectomy treatment for early gastric cancer after non-curative endoscopic submucosal dissection: a meta-analysis. Chin Med J (Engl) 2023; 136:528-535. [PMID: 36914940 PMCID: PMC10106195 DOI: 10.1097/cm9.0000000000002605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Indexed: 03/16/2023] Open
Abstract
BACKGROUND Endoscopic resection is increasingly used in the treatment for early gastric cancer (EGC); however, about 15% of endoscopic submucosal dissection (ESD) cases report non-curative resection. The efficacy of different remedial interventions after non-curative ESD for EGC remains controversial. This meta-analysis aimed to compare the long-term outcomes of additional surgery and non-gastrectomy treatment for EGC patients who underwent non-curative ESD. METHODS All relevant studies published up to October 2021 were systematically searched in the PubMed, Web of Science, and Embase databases. The medical subject headings terms "early gastric cancer," "gastrectomy," "endoscopic submucosal dissection," and their related free keywords were used to search relevant articles without restrictions on regions, publication types, or languages. The Newcastle-Ottawa Quality Assessment Scale was used to evaluate the quality of the included studies. Odds ratios (ORs) with 95% confidence intervals (CIs) of 5-year overall survival (OS), disease-specific survival (DSS), disease-free survival (DFS) and hazard ratios (HRs) with 95% CIs of OS were calculated using a random- or fixed-effects model. RESULTS This meta-analysis included 17 retrospective cohort studies with 5880 patients, of whom 3167 underwent additional surgery and 2713 underwent non-gastrectomy. We found that patients receiving additional gastrectomy had better 5-year OS (OR = 3.63, 95% CI = 3.05-4.31), DSS (OR = 3.22, 95% CI = 2.22-4.66), and DFS (OR = 4.39, 95% CI = 1.78-10.82) outcomes than those receiving non-gastrectomy treatments. The pooled HR also showed that gastrectomy following non-curative ESD significantly improved OS (HR = 0.40, 95% CI = 0.33-0.48). In addition, elderly patients benefited from additional surgery in consideration of the 5-year OS (HR = 0.54, 95% CI = 0.41-0.72). CONCLUSIONS Compared with non-gastrectomy treatments, additional surgery offered better long-term survival outcomes for patients with EGC who underwent non-curative ESD.
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Affiliation(s)
- Sixuan Li
- Health Science Center, Peking University, Beijing 100191, China
| | - Xueli Tian
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - Jingyao Wei
- Health Science Center, Peking University, Beijing 100191, China
| | - Yanyan Shi
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - Hua Zhang
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - Yonghui Huang
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
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Wang J, Li SJ, Yan Y, Yuan P, Li WF, Cao CQ, Chen WG, Chen KN, Wu Q. Feasibility of same-day discharge following endoscopic submucosal dissection for esophageal or gastric early cancer. World J Gastroenterol 2022; 28:5957-5967. [PMID: 36405109 PMCID: PMC9669832 DOI: 10.3748/wjg.v28.i41.5957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/15/2022] [Accepted: 10/19/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Endoscopic submucosal dissection (ESD) is an established technique for the treatment of early gastrointestinal neoplasia. Generally, multi-day (M-D) admission is required for patients undergoing ESD due to potential complications.
AIM To evaluate the feasibility of a same-day (S-D) discharge strategy for ESD of the esophagus or stomach.
METHODS The data of patients who underwent esophageal or gastric ESD were retrospectively collected from January 2018 to December 2021 at Peking University Cancer Hospital. The propensity score matching (PSM) method was applied to balance the unevenly distributed patient baseline characteristics between the S-D and M-D groups. Intraoperative and postoperative parameters were compared between the matched groups.
RESULTS Among the 479 patients reviewed, 470 patients, including 91 in the S-D group and 379 in the M-D group, fulfilled the inclusion and exclusion criteria. Following PSM, 78 patients in each group were paired using the 1:1 nearest available score match algorithm. No significant difference was found between groups with respect to intraoperative and postprocedural major adverse events (AEs). Tumor size, complete resection rate, and procedural duration were comparable between the groups. The S-D group demonstrated a significantly shorter length of hospital stay (P < 0.001) and lower overall medical expenses (P < 0.001) compared with the M-D group.
CONCLUSION The S-D discharge strategy may be feasible and effective for esophagogastric ESD, and the procedural-related AEs can be managed successfully.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Shi-Jie Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
- The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832008, Xinjiang Uygur Autonomous Region, China
| | - Yan Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Peng Yuan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Wei-Feng Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Chang-Qi Cao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Wei-Gang Chen
- The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi 832008, Xinjiang Uygur Autonomous Region, China
| | - Ke-Neng Chen
- The First Department of Thoracic Surgery, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Qi Wu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Endoscopy Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
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Weng CY, Sun SP, Cai C, Xu JL, Lv B. Endoscopic submucosal dissection for early signet ring cell gastric cancer: A systematic review and meta-analysis. World J Clin Cases 2022; 10:6915-6926. [PMID: 36051146 PMCID: PMC9297431 DOI: 10.12998/wjcc.v10.i20.6915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/11/2021] [Accepted: 04/21/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The use of endoscopic submucosal dissection (ESD) for treating early signet ring cell carcinoma (SRC) is controversial due to the risk of lymph node metastasis.
AIM To carry out a meta-analysis to evaluate ESD for therapeutic efficacy and safety in early signet ring cell gastric cancer.
METHODS The PubMed, Web of Science, Cochrane Library, and EMBASE databases were used to search for relevant studies evaluating the therapeutic efficacy and safety of ESD in SRC. The rates of recurrence, complete resection, incomplete resection, curative resection, en bloc resection, and adverse events were extracted and analyzed. The methodological quality of the enrolled studies was assessed using the Newcastle-Ottawa Scale. Publication bias was evaluated by the Egger’s test. Institutional review board approval and written consent were not needed for this report.
RESULTS This meta-analysis enrolled seven studies with 653 participants undergoing ESD treatment for early SRC. The overall recurrence rate was 0.010 [95% confidence interval (CI): 0.000-0.040, Z = 1.422, P = 0.155]. The total lymphovascular invasion rate was 0.038 (95%CI: 0.007-0.088, Z = 3.026, P = 0.002). The total en bloc resection rate was estimated at 0.984 (95%CI: 0.925-1.000, Z = 19.463, P = 0.000). The total complete and incomplete resection rates were estimated at 0.785 (95%CI: 0.596-0.928, Z = 9.789, P = 0.000) and 0.188 (95%CI: 0.016-0.468, Z = 2.531, P = 0.011), respectively. The total procedure-associated gastric hemorrhage and perforation rates were estimated at 0.026 (95%CI: 0.005-0.061, Z = 3.006 P = 0.003) and 0.004 (95%CI: 0.000-0.028, Z = 0.938, P = 0.348), respectively. The curative resection, vertical margin invasion, and lateral margin invasion rates were 72.1% (145/341), 2.3% (8/348), and 34.45% (41/119), respectively.
CONCLUSION ESD constitutes a promising therapeutic approach for early undifferentiated SRC gastric cancer. However, further improvements are required for increasing its treatment efficacy and reducing adverse outcomes.
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Affiliation(s)
- Chun-Yan Weng
- Department of Gastroenterology, The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou 310000, Zhejiang Province, China
| | - Shao-Peng Sun
- Department of Gastroenterology, The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou 310000, Zhejiang Province, China
| | - Chang Cai
- Department of Gastroenterology, The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou 310000, Zhejiang Province, China
| | - Jing-Li Xu
- Department of Gastrointestinal Surgery, The First Clinical Medical University of Zhejiang Chinese Medical University, Hangzhou 310000, Zhejiang Province, China
| | - Bin Lv
- Department of Gastroenterology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310006, Zhejiang Province, China
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Lee GH, Lee E, Park B, Roh J, Lim SG, Shin SJ, Lee KM, Noh CK. Long-term outcomes of endoscopic submucosal dissection and surgery for undifferentiated intramucosal gastric cancer regardless of size. World J Gastroenterol 2022; 28:840-852. [PMID: 35317100 PMCID: PMC8900575 DOI: 10.3748/wjg.v28.i8.840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/30/2021] [Accepted: 01/26/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The clinical outcomes of endoscopic submucosal dissection (ESD) for undifferentiated (UD) intramucosal early gastric cancer (EGC) compared with those of surgery, regardless of lesion size, are not well known. Furthermore, there is a concern regarding the treatment plan before and after ESD in cases of UD intramucosal EGC within expanded indications.
AIM To evaluate clinical outcomes of ESD compared with those of surgery in UD intramucosal EGC patients regardless of tumor size.
METHODS We enrolled patients with UD intramucosal EGC after ESD with complete resection or surgery from January 2005 to August 2020 who met the within or beyond expanded indications with lesion size > 2 cm (the only non-curative factor). Overall, 123 and 562 patients underwent ESD and surgery, respectively. After propensity-score matching, clinical and long-term outcomes, i.e., recurrence-free survival (RFS) and overall survival (OS), were analyzed. The multivariable Cox proportional hazard model with treatment modality and ESD indication was used to evaluate the recurrence risk.
RESULTS After matching, 119 patients each were finally enrolled in the ESD and surgery groups. The median length of hospital stay was shorter in the ESD group than surgery group (4.0 vs 9.0 days, P < 0.001). Four cases of recurrence after ESD were local recurrences, all of which occurred within 1 year. Total recurrence was seven (5.9%) and two (1.7%) in the ESD and surgery groups, respectively. No difference was observed between the two groups with respect to OS (P = 0.948). However, the ESD group had inferior RFS compared with the surgery group (P = 0.031). ESD was associated with the risk of recurrence after initial treatment in all enrolled patients (hazard ratio, 5.2; 95% confidence interval: 1.0-25.8, P = 0.045).
CONCLUSION Although OS was similar between the two groups, surveillance endoscopy was important for the ESD than for the surgery group because RFS was inferior and local recurrence was an issue.
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Affiliation(s)
- Gil Ho Lee
- Department of Gastroenterology, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Eunyoung Lee
- Department of Biomedical Informatics, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Bumhee Park
- Department of Biomedical Informatics, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Jin Roh
- Department of Pathology, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Sun Gyo Lim
- Department of Gastroenterology, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Sung Jae Shin
- Department of Gastroenterology, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Kee Myung Lee
- Department of Gastroenterology, Ajou University School of Medicine, Suwon 16499, South Korea
| | - Choong-Kyun Noh
- Department of Gastroenterology, Ajou University School of Medicine, Suwon 16499, South Korea
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11
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Yeo MK, Kang SH, Jeong KB, Lee HS, Jeon HJ, Eun HS, Lee ES, Moon HS, Kim SH, Sung JK, Lee BS, Jeong HY. Comparison of Gene Expression Profiles of Signet Ring Cell Carcinoma and Poorly Cohesive Carcinoma in Early Gastric Cancer. CLINICAL MEDICINE INSIGHTS: ONCOLOGY 2022; 16:11795549221097941. [PMID: 35603092 PMCID: PMC9121514 DOI: 10.1177/11795549221097941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Accepted: 04/14/2022] [Indexed: 11/15/2022] Open
Abstract
Introduction: Although signet ring cell carcinoma (SRC) is a subtype of poorly cohesive carcinoma (PC), the differences in the biological behavior between the 2 morphologically similar carcinomas have not been fully studied. Therefore, we performed transcriptome analysis to evaluate the differences of genetic expressions between SRC and PC. Methods: The study group consisted of patients with SRC or PC pathology from patients with early gastric cancer (EGC) whose depth of invasion was localized in the mucosal layer. A total of 18 patients were enrolled. The patients were divided into 3 groups based on their histologic type and lymph node (LN) status. Group 1 consisted of patients with PC and positive LN metastasis, Group 2 consisted of patients with PC without LN metastasis, and Group 3 consisted of patients with SRC without LN metastasis. Transcriptome analysis was performed using the nCounter PanCancer Progression Panel Kit. Results: The expression of 77 genes in Group 1 was altered compared to that in normal tissues. The expression of 49 and 13 genes in Groups 2 and 3, respectively, was altered when compared to that in normal tissues. Groups 1 and 2 showed similar genetic expressions. However, Group 3 showed numerous differences in gene expression including Roundabout4 (Robo4) compared to the other groups, especially Group 1. Conclusion: Our data suggest that gene expression patterns were different between SRC and PC and expression of ROBO4 may play an important role in the prognosis of SRC and PC type of EGC.
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Affiliation(s)
- Min Kyung Yeo
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Sun Hyung Kang
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Ku Bean Jeong
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyun Seok Lee
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hong Jae Jeon
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyuk Soo Eun
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Eaum Seok Lee
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hee Seok Moon
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Seok Hyun Kim
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jae Kyu Sung
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Byung Seok Lee
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyun Yong Jeong
- Division of gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
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12
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Wang J, Wang L, Li S, Bai F, Xie H, Shan H, Liu Z, Ma T, Tang X, Tang H, Qin A, Lei S, Zuo C. Risk Factors of Lymph Node Metastasis and Its Prognostic Significance in Early Gastric Cancer: A Multicenter Study. Front Oncol 2021; 11:649035. [PMID: 34722232 PMCID: PMC8548692 DOI: 10.3389/fonc.2021.649035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 09/23/2021] [Indexed: 01/14/2023] Open
Abstract
Background Early gastric cancer (EGC) is invasive gastric cancer that invades no deeper than the submucosa, regardless of lymph node metastasis (LNM). It is mainly treated by surgery. Recently, the resection range of EGC has been minimized, but cancer recurrence and overall survival in some patients should be given high status. LNM is an important indicator of prognosis and treatment in gastric cancer. The law of the number and location of metastatic lymph nodes in EGC is not yet clear. Therefore, we aimed to identify the risk factors of LNM in radically resected EGC and guide treatment. Methods The clinicopathological factors of 611 patients with EGC were retrospectively analyzed in six hospitals between January 2010 and December 2016. The relationship between clinicopathological factors and LNM, as well as their prognostic significance, were analyzed by univariate and multivariate analyses. Results The rate of LNM was 20.0% in the 611 EGC patients. The depth of invasion, differentiation type, tumor diameter, morphological ulceration, and lymphovascular invasion were independent risk factors for LNM (P<0.05) by logistic regression analysis. Tumor location in the proximal third of the stomach and morphological ulceration were significant factors for group 2 LNM. Moreover, the 5-year survival rate was 94.9% for patients with no positive nodes, 88.5% for patients with 1-2 positive nodes, 64.3% for patients with 3-6 positive nodes, and 41.8% for patients with >6 metastatic nodes. Interestingly, the 7-year risk of relapse diminished for patients with no LNM or retrieved no less than 15 lymph nodes. Conclusions Fifteen lymph node dissection and D2 radical operation are the surgical options in case of high risk factors for LNM. Extended lymph node dissection (D2+) is recommended for morphological ulceration or disease located in the proximal third of the stomach due to their high rate of group 2 LNM. Furthermore, LNM is a significant prognostic factor of EGC. Moreover, lymph nodes can also play a significant role in the chemotherapeutic and radiotherapy approach for non-surgical patients with EGC.
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Affiliation(s)
- Jinfeng Wang
- Department of Gastroduodenal and Pancreatic Surgery, Translational Medicine Research Center of Liver Cancer, Laboratory of Digestive Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine and Hunan Cancer Hospital (Hunan Cancer Institute), Central South University, Hunan Province Key Laboratory of Virology (Tumor Immunity), Changsha, China
| | - Liang Wang
- Graduates School, University of South China, Hengyang, China
| | - Sha Li
- Department of Gastroduodenal and Pancreatic Surgery, Translational Medicine Research Center of Liver Cancer, Laboratory of Digestive Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine and Hunan Cancer Hospital (Hunan Cancer Institute), Central South University, Hunan Province Key Laboratory of Virology (Tumor Immunity), Changsha, China
| | - Fei Bai
- Department of Gastroduodenal and Pancreatic Surgery, Translational Medicine Research Center of Liver Cancer, Laboratory of Digestive Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine and Hunan Cancer Hospital (Hunan Cancer Institute), Central South University, Hunan Province Key Laboratory of Virology (Tumor Immunity), Changsha, China
| | - Hailong Xie
- Graduates School, Department of Gastrointestinal Surgery of Second Affiliated Hospital, Cancer Research Institute, University of South China, Hengyang, China
| | - Hanguo Shan
- Graduates School, Department of Gastrointestinal Surgery of Second Affiliated Hospital, Cancer Research Institute, University of South China, Hengyang, China
| | - Zhuo Liu
- The Third Department of General Surgery, The Central Hospital of Xiangtan City, Xiangtan, China
| | - Tiexiang Ma
- The Third Department of General Surgery, The Central Hospital of Xiangtan City, Xiangtan, China
| | - Xiayu Tang
- Department of General Surgery, Yongzhou Central Hospital, Yongzhou, China
| | - Haibing Tang
- Department of General Surgery, People Hospital of Qiyang County, Yongzhou, China
| | - Ang Qin
- Department of Gastroduodenal and Pancreatic Surgery, Translational Medicine Research Center of Liver Cancer, Laboratory of Digestive Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine and Hunan Cancer Hospital (Hunan Cancer Institute), Central South University, Hunan Province Key Laboratory of Virology (Tumor Immunity), Changsha, China
| | - Sanlin Lei
- Department of General Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Chaohui Zuo
- Department of Gastroduodenal and Pancreatic Surgery, Translational Medicine Research Center of Liver Cancer, Laboratory of Digestive Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine and Hunan Cancer Hospital (Hunan Cancer Institute), Central South University, Hunan Province Key Laboratory of Virology (Tumor Immunity), Changsha, China.,Graduates School, University of South China, Hengyang, China
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13
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Diagnostic Ability of Magnifying Narrow-Band Imaging for the Extent of Early Gastric Cancer: A Systematic Review and Meta-Analysis. Gastroenterol Res Pract 2021; 2021:5543556. [PMID: 33986796 PMCID: PMC8093039 DOI: 10.1155/2021/5543556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/22/2021] [Accepted: 04/13/2021] [Indexed: 12/19/2022] Open
Abstract
Background Accurate delineation of tumor margin is essential for complete resection of early gastric cancer (EGC). The objective of this study is to assess the performance of magnifying endoscopy with narrow-band imaging (ME-NBI) for the accurate demarcation of EGC margins. Methods We searched PubMed, EMBASE, Web of Science, and Cochrane Library databases up to March 2020 to identify eligible studies. The diagnostic accuracy of ME-NBI for EGC margins was calculated, and subgroup analyses were performed based on tumor size, depth of tumor invasion, tumor-occupied site, macroscopic type, histological type, Helicobacter pylori (H. pylori), and endoscopists' experience. Besides, we also evaluated the negative and positive resection rates of the horizontal margin (HM) of EGC after endoscopic submucosal dissection (ESD) and surgery. Results Ten studies comprising 1018 lesions were eligible in the databases. The diagnostic accuracy of ME-NBI for the demarcation of EGC margins was 92.4% (95% confidence interval (CI): 86.7%-96.8%). According to ME-NBI subgroup analyses, the rate of accurate evaluation of EGC margins was not associated with H. pylori infection status, tumor size, depth of tumor invasion, tumor-occupied site, macroscopic type, histological type, and endoscopists' experience, and no statistical differences were found in subgroup analyses. Moreover, the negative and positive resection rates of HM after ESD and surgery were 97.4% (95% CI: 92.1%-100%) and 2.6% (95% CI: 0.02%-7.9%), respectively. Conclusions ME-NBI enables a reliable delineation of the extent of EGC.
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14
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Bang CS, Ahn JY, Kim JH, Kim YI, Choi IJ, Shin WG. Establishing Machine Learning Models to Predict Curative Resection in Early Gastric Cancer with Undifferentiated Histology: Development and Usability Study. J Med Internet Res 2021; 23:e25053. [PMID: 33856358 PMCID: PMC8085749 DOI: 10.2196/25053] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/15/2020] [Accepted: 03/21/2021] [Indexed: 12/17/2022] Open
Abstract
Background Undifferentiated type of early gastric cancer (U-EGC) is included among the expanded indications of endoscopic submucosal dissection (ESD); however, the rate of curative resection remains unsatisfactory. Endoscopists predict the probability of curative resection by considering the size and shape of the lesion and whether ulcers are present or not. The location of the lesion, indicating the likely technical difficulty, is also considered. Objective The aim of this study was to establish machine learning (ML) models to better predict the possibility of curative resection in U-EGC prior to ESD. Methods A nationwide cohort of 2703 U-EGCs treated by ESD or surgery were adopted for the training and internal validation cohorts. Separately, an independent data set of the Korean ESD registry (n=275) and an Asan medical center data set (n=127) treated by ESD were chosen for external validation. Eighteen ML classifiers were selected to establish prediction models of curative resection with the following variables: age; sex; location, size, and shape of the lesion; and whether ulcers were present or not. Results Among the 18 models, the extreme gradient boosting classifier showed the best performance (internal validation accuracy 93.4%, 95% CI 90.4%-96.4%; precision 92.6%, 95% CI 89.5%-95.7%; recall 99.0%, 95% CI 97.8%-99.9%; and F1 score 95.7%, 95% CI 93.3%-98.1%). Attempts at external validation showed substantial accuracy (first external validation 81.5%, 95% CI 76.9%-86.1% and second external validation 89.8%, 95% CI 84.5%-95.1%). Lesion size was the most important feature in each explainable artificial intelligence analysis. Conclusions We established an ML model capable of accurately predicting the curative resection of U-EGC before ESD by considering the morphological and ecological characteristics of the lesions.
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Affiliation(s)
- Chang Seok Bang
- Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Republic of Korea.,Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea.,Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Republic of Korea.,Division of Big Data and Artificial Intelligence, Chuncheon Sacred Heart Hospital, Chuncheon, Republic of Korea
| | - Ji Yong Ahn
- Division of Gastroenterology, Department of Internal Medicine, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Jie-Hyun Kim
- Division of Gastroenterology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Il Kim
- Center for Gastric Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Il Ju Choi
- Center for Gastric Cancer, Research Institute and Hospital, National Cancer Center, Goyang, Republic of Korea
| | - Woon Geon Shin
- Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Republic of Korea.,Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Republic of Korea
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15
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Long-term outcomes of endoscopic resection followed by additional surgery after non-curative resection in undifferentiated-type early gastric cancer: a nationwide multi-center study. Surg Endosc 2021; 36:1847-1856. [PMID: 33825017 DOI: 10.1007/s00464-021-08464-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/17/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Undifferentiated-type early gastric cancer (UD EGC) shows lower curative resection rates after endoscopic submucosal dissection (ESD). Additional surgery is recommended after non-curative resection. We evaluated the long-term outcomes of ESD followed by additional surgery after non-curative resection in UD EGC compared to those for surgery as initial treatment. METHODS We reviewed 1139 UD EGC patients who underwent ESD at 18 hospitals and 1956 patients who underwent surgery at two hospitals between February 2005 and May 2015. We enrolled 636 patients with non-curative ESD and 1429 surgery subjects beyond the curative ESD criteria. Among them, 133 patients with additional surgery after ESD (ESD + OP group) and 252 patients without additional surgery (ESD-only group) were matched 1:1 using propensity scores to patients with surgery as initial treatment (surgery group). Overall survival (OS) and recurrence-free survival (RFS) were compared. RESULTS Signet ring cell carcinoma and poorly differentiated adenocarcinoma (PDA) were observed in 939 and 1126 cases, respectively. OS was significantly longer in the surgery group than in the ESD + OP group, especially for PDA. However, RFS was shorter in the ESD-only group than those in the ESD + OP and surgery groups. RFS did not differ significantly between the ESD + OP and surgery groups. Compared to the surgery group, the ESD-only and ESD + OP groups had an overall hazard ratio for RFS of 3.58 (95% confidence interval 1.44-8.88) and 0.46 (0.10-2.20), respectively. CONCLUSIONS ESD followed by additional surgery after non-curative resection showed comparable cancer-specific outcomes to initial surgery in UD EGC.
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Bang CS. Long-Term Outcomes of Endoscopic Submucosal Dissection of Undifferentiated-Type Early Gastric Cancer. Clin Endosc 2021; 54:143-144. [PMID: 33626272 PMCID: PMC8039736 DOI: 10.5946/ce.2021.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 01/16/2021] [Indexed: 12/12/2022] Open
Affiliation(s)
- Chang Seok Bang
- Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Korea.,Institute for Liver and Digestive Diseases, Hallym University, Chuncheon, Korea.,Institute of New Frontier Research, Hallym University College of Medicine, Chuncheon, Korea.,Division of Big Data and Artificial Intelligence, Chuncheon Sacred Heart Hospital, Chuncheon, Korea
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17
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Kim SJ, Park BS, Choi CW, Kim HW, Kang DH, Park SB. Endoscopic Features of Submucosal Invasion in Undifferentiated-type Early Gastric Cancer Less than 20 mm in Size without Ulceration. THE KOREAN JOURNAL OF HELICOBACTER AND UPPER GASTROINTESTINAL RESEARCH 2021. [DOI: 10.7704/kjhugr.2020.0062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Embaye KS, Zhang C, Ghebrehiwet MA, Wang Z, Zhang F, Liu L, Qin S, Qin L, Wang J, Wang X. Clinico-pathologic determinants of non-e-curative outcome following en-bloc endoscopic submucosal dissection in patients with early gastric neoplasia. BMC Cancer 2021; 21:92. [PMID: 33482761 PMCID: PMC7824923 DOI: 10.1186/s12885-020-07762-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 11/09/2020] [Indexed: 02/08/2023] Open
Abstract
Background Endoscopic submucosal dissection (ESD) is gaining enormous popularity in the treatment of early gastric cancers (EGCs) in many institutions across the world. However, appropriate selection of candidates for endoscopic resection is crucial to sufficiently mitigate non-e-curative (NEC) resection. This study aims at identifying the various clinico-pathologic factors that independently predict the NEC outcome and depth of submucosal invasion following ESD procedure in patients with EGC. Methods Multiple logistic regression analysis was applied to investigate factors that independently predict both non-curability phenomenon and the level of submucosal invasion in patients with early gastric neoplasia. Statistical Packages for the Social Sciences version 23 was used for analysis. Results A total of 153 patients (162 EGC lesions) underwent en-bloc ESD after which the rate of complete resection and non-e-curative outcome were 95% and 22.2%, correspondingly. Multivariate analysis depicted that tumor location in the upper two third of stomach (odds ratio [OR], 5.46; 95% confidence interval [95% CI], 1.65–18.12; p = 0.006), tumor size > 2 cm (OR, 7.63; 95% CI, 2.29–25.42; p = 0.001), histologically undifferentiated tumor (OR, 15.54; 95% CI, 1.65–146.22; p = 0.001), and tumors with 0-IIa/0-IIc or their mixed variants with predominant 0-IIa/0-IIc (OR, 9.77; 95% CI, 1.23–77.65; p = 0.031) were all independent predictors of NEC resection for early gastric tumors. Additionally, location in the upper two third of the stomach (OR, 8.88; 95% CI, 2.90–27.17; p < 0.001), ulcerated lesions (OR, 3.70; 95% CI, 1.15–11.90; p = 0.028), lesions with > 2 cm (OR, 2.94; 95% CI, 1.08–8.02; p = 0.036) and those with poor differentiation (OR, 6.51; 95% CI, 2.23–18.98; p = 0.001) were found to have significant association with submucosal invasion. Conclusions Tumors located in the upper two third of the stomach having a larger size (> 2 cm), poor histo-differentiation and a gross type of 0-IIa/0-IIc or their mixed variants with predominant 0-IIa/0-IIc were significantly associated with a risk of NEC after ESD procedure. Thus, early gastric tumors displaying these features need to be handled carefully during endoscopic resection. Our findings may shed light on the pre-procedural detection of clinicopathologic factors that determine non-e-curability in patients with EGC.
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Affiliation(s)
- Kidane Siele Embaye
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Orotta College of Medicine and Health Sciences, Asmara, Eritrea
| | - Chao Zhang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Matiwos Araya Ghebrehiwet
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.,Orotta College of Medicine and Health Sciences, Asmara, Eritrea
| | - Zhihao Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Fengdi Zhang
- Wuhan Third Hospital (Tongren Hospital of Wuhan University), Wuhan, 430060, China
| | - Liwei Liu
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Shenghui Qin
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Lingzhi Qin
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jun Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xi Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Zhao B, Huang R, Lu H, Mei D, Bao S, Xu H, Huang B. Risk of lymph node metastasis and prognostic outcome in early gastric cancer patients with mixed histologic type. Curr Probl Cancer 2020; 44:100579. [DOI: 10.1016/j.currproblcancer.2020.100579] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 03/13/2020] [Accepted: 03/24/2020] [Indexed: 12/12/2022]
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20
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De Marco MO, Tustumi F, Brunaldi VO, Resende RH, Matsubayashi CO, Baba ER, Chaves DM, Bernardo WM, de Moura EGH. Prognostic factors for ESD of early gastric cancers: a systematic review and meta-analysis. Endosc Int Open 2020; 8:E1144-E1155. [PMID: 32904802 PMCID: PMC7458740 DOI: 10.1055/a-1201-3089] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 02/12/2020] [Indexed: 02/06/2023] Open
Abstract
Background and study aims Gastric neoplasms are one of the leading types of cancer in the world and early detection is essential to improve prognosis. Endoscopy is the gold-standard diagnostic procedure and allows adequate treatment in selected cases. Endoscopic submucosal dissection (ESD) has been reported to safely address most early gastric cancers (EGCs), with high curability rates. However, data on prognostic factors related to ESDs of EGCs are conflicting. Therefore, we aimed to systematically review the available literature and to perform a meta-analysis to identify the relevant prognostic factors in this context. Methods We performed this study according to PRISMA guidelines. Comparative studies assessing the relationship between curative resection or long-term curability rates and relevant prognostic factors were selected. Prognostic factors were demographic data, lesion features (location, morphology of the lesion, size, and depth of invasion), histological findings, Helycobacter pylori (HP) infection, presence of gastric a atrophy and body mass index (BMI). Finally, we also evaluated risk factors related to metachronous gastric neoplasm. Results The initial search retrieved 2829 records among which 46 studies were included for systematic review and meta-analysis. The total sample comprised 28366 patients and 29282 lesions. Regarding curative resection, pooled data showed no significant influence of sex [odds ratio (OR): 1.15 (0,97, 1.36) P = 0.10 I 2 = 47 %] , age [OR: 1.00 (0.61, 1.64) P = 1.00 I 2 = 58 %], posterior vs non-posterior location [OR: 1.35 (0.81, 2.27) P = 0.25 I 2 = 84 %], depressed vs von-depressed macroscopic type[OR: 1.21 (0.99, 1.49) P = 0.07 I 2 = 0 %], non-upper vs upper location [OR: 1.41 (0.93, 2.14) P = 0.10 I 2 = 77 %] and BMI [OR: 0.84 (0.57; 1.26) P = 0.41 I 2 = 0 %]. Differentiated neoplasms presented greater chance of cure compare to undifferentiated [OR: 0.10 (0.07, 0.15) P < 0.00001 I 2 = 0 %]. Ulcerated lesions had lower curative rates compared to non-ulcerated [OR: 3.92 (2.81, 5.47) P < 0.00001 I 2 = 44 %]. Lesions smaller than 20 mm had greater chance of curative resection [OR: 3.94 (3.25, 4.78) P < 0.00001 I 2 = 38 %]. Bleeding during procedure had lower curative rates compared to non-bleeding [OR: 2.13 (1.56, 2.93) P < 0.0001 I 2 = 0 %]. Concerning long-term cure, female gender [OR 1.62 (1.33, 1.97) P < 0.00001 I 2 = 0 %] and the mucosal over SM1 cancers were protective factors [OR: 0.08 (0.02, 0.39) P = 0.002 I 2 = 86 %]. Gastric atrophy [OR: 0.60 (0.45, 0.81) P = 0.0006 I 2 = 42 %] and the pepsinogen I/pepsinogen II ratio [OR 2.29 (1.47, 3.57) P = 0.0002 I 2 = 0 %] were risk factors to metachronous gastric neoplasm. Conclusions Ulcerated lesions, histology, bleeding and size > 20 mm are prognostic factors concerning curative resection. Regarding long-term cure, female gender and mucosal over SM1 cancer are predictive factors. Gastric atrophy and the pepsinogen ratio are risk factors for metachronous gastric neoplasm.
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Affiliation(s)
- Michele Oliveira De Marco
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Francisco Tustumi
- Department of Gastroenterology, Digestive Surgery Division, Sao Paulo School of Medicine
| | - Vitor Ottoboni Brunaldi
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil; Center for Gastrointestinal Endoscopy, Surgery and Anatomy Department, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Ricardo Hannum Resende
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Carolina Ogawa Matsubayashi
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Elisa Ryoka Baba
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
| | - Dalton Marques Chaves
- Gastrointestinal Endoscopy Unit, Gastroenterology Department, University of São Paulo Medical School, São Paulo, Brazil
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Li H, Zhao LL, Zhang XC, Liu DX, Wang GY, Huo ZB, Chen SB. Combination of endoscopic submucosal dissection and laparoscopic sentinel lymph node dissection in early mucinous gastric cancer: Role of lymph node metastasis. World J Clin Cases 2020; 8:3474-3482. [PMID: 32913854 PMCID: PMC7457096 DOI: 10.12998/wjcc.v8.i16.3474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/05/2020] [Accepted: 07/16/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Recent evidence showed that combining endoscopic submucosal dissection (ESD) and laparoscopic sentinel lymph node dissection may avoid unnecessary gastrectomy in treating early mucinous gastric cancer (EMGC) patients with risks of positive lymph node metastasis (pLNM).
AIM To explore the predictive factors for pLNM in EMGC, and to optimize the clinical application of combing ESD and sentinel lymph node dissection in a proper subgroup of patients with EMGC.
METHODS Thirty-one patients with EMGC who had undergone gastrectomy with lymph node dissection were consecutively enrolled from January 1988 to December 2016. Univariate and multivariate logistic regression analyses were used to estimate the association between the rates of pLNM and clinicopathological factors, providing odds ratio (OR) with 95% confidence interval. And the association between the number of predictors and the pLNM rate was also investigated.
RESULTS Depth of invasion (OR = 7.342, 1.127-33.256, P = 0.039), tumor diameter (OR = 9.158, 1.348-29.133, P = 0.044), and lymphatic vessel involvement (OR = 27.749, 1.821-33.143, P = 0.019) turned out to be significant and might be the independent risk factors for predicating pLNM in the multivariate analysis. For patients with 1, 2, and 3 risk factors, the pLNM rates were 9.1%, 33.3%, and 75.0%, respectively. pLNM was not detected in seven patients without any of these risk factors.
CONCLUSION ESD might serve as a safe and sufficient treatment for intramucosal EMGC if tumor size ≤ 2 cm, and when lymphatic vessel involvement is absent by postoperative histological examination. Combining ESD and sentinel lymph node dissection could be recommended as a safe and effective treatment for EMGC patients with a potential risk of pLNM.
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Affiliation(s)
- Hua Li
- Institute of Cancer Control, Xingtai People’s Hospital, Xingtai 054001, Hebei Province, China
| | - Li-Li Zhao
- Institute of Cancer Control, Xingtai People’s Hospital, Xingtai 054001, Hebei Province, China
| | - Xiao-Chong Zhang
- Institute of Cancer Control, Xingtai People’s Hospital, Xingtai 054001, Hebei Province, China
| | - Deng-Xiang Liu
- Institute of Cancer Control, Xingtai People’s Hospital, Xingtai 054001, Hebei Province, China
| | - Gui-Ying Wang
- Department of General Surgery, Fourth Affiliated Hospital of Hebei Medial University, Shijiazhuang 050000, Hebei Province, China
| | - Zhi-Bin Huo
- Institute of Cancer Control, Xingtai People’s Hospital, Xingtai 054001, Hebei Province, China
| | - Shu-Bo Chen
- Institute of Cancer Control, Xingtai People’s Hospital, Xingtai 054001, Hebei Province, China
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Guo A, Du C, Tian S, Sun L, Guo M, Lu L, Peng L. Long-term outcomes of endoscopic submucosal dissection versus surgery for treating early gastric cancer of undifferentiated-type. Medicine (Baltimore) 2020; 99:e20501. [PMID: 32481468 DOI: 10.1097/md.0000000000020501] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Application of endoscopic submucosal dissection (ESD) for treating undifferentiated-type early gastric cancers (EGCs) remains controversial. Therefore, we aimed to compare long-term outcomes of ESD with those of surgery for patients with undifferentiated-type EGCs by a retrospective study.We retrospectively reviewed data of patients who underwent curative ESD or gastrectomy for undifferentiated-type EGCs between 2010 and 2017. Gastric cancers were undifferentiated-type adenocarcinoma without ulceration confined to the mucosal layer and 2 cm or smaller in size. Demographics, complications, recurrence cancer rates, and survival data were collected and compared.Forty patients who underwent curative ESD and 52 patients who underwent surgery were included. The median follow-up duration was 74.6 months. There was no significant difference of metachronous gastric cancer rate (5.0% vs 3.8%, P = .75) or total cancer recurrence rate (10.0% vs 3.8%, P = .33) between the 2 groups. The 5-year overall survival, disease-free survival, recurrence-free survival rates did not significantly differ between the 2 groups (P = .72, .26, .27 respectively). There were no gastric cancer-related deaths in either group.Long-term outcomes after curative ESD for undifferentiated-type EGCs that met the expanded indication were comparable to that achieved with surgery. ESD without additional surgery is an acceptable choice to treat undifferentiated-type EGCs that meet the curative criteria.
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Affiliation(s)
| | - Chao Du
- Department of Gastroenterology
| | | | | | - Mingxiao Guo
- Department of Laparoscopic Surgery, Linyi People's Hospital, 11th School of Clinical Medicine of Qingdao University, Linyi, P. R. China
| | - Lin Lu
- Department of Gastroenterology
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Lee YM, Kang SH, Kim JS, Eun HS, Joo JS, Rou WS, Park JH, Moon HS, Lee ES, Kim SH, Sung JK, Lee BS, Jeong HY, Yeo MK, Song KS, Yoo HM. Subepithelial Spread of Early Gastric Signet Ring Cell Carcinoma: How Far They Can Reach? Dig Dis 2020; 38:442-448. [PMID: 32187603 DOI: 10.1159/000507322] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 03/17/2020] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Although signet ring cell carcinoma (SRC) is a poorly differentiated cancer subtype, recent studies suggest that endoscopic resection can be applied in small, mucosal early gastric SRC. However, other studies report frequent positive lines at the lateral resection margin after endoscopic treatment. Subepithelial spread beneath normal mucosa can exist in SRC, and such lesions may be the cause of positive margins after endoscopic resection. Thus, we conducted a retrospective study in order to evaluate the significance of subepithelial spread in early gastric SRC. METHOD Medical records of early gastric SRC patients who underwent surgery or endoscopic resection from January 2011 to December 2016 at a single tertiary hospital (Daejeon, South Korea) were reviewed to examine subepithelial spread and clinical datum. Two expert pathologists reviewed all pathologic specimens, and only patients showing a pure SRC component were included. RESULTS Eighty-six patients were initially enrolled, and subepithelial spread existed in 62 patients (72.1%). The mean distance of subepithelial spread was 1,132.1 µm, and the maximal distance was 6,000 μm. Only discoloration was significantly associated with the presence of a subepithelial spread (p < 0.05, χ2 test, and logistic regression test). Distance of subepithelial spread did not correlate with total lesion size. CONCLUSION Subepithelial spread of early gastric SRC occurs frequently and can reach up to 6 mm. Lesion discoloration may be associated with the presence of subepithelial spread. Our results suggest that careful decision of the margin is needed when performing endoscopic resection of early gastric SRC.
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Affiliation(s)
- Yong Moon Lee
- Department of Pathology, Dankook University School of Medicine, Cheonan, Republic of Korea
| | - Sun Hyung Kang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea,
| | - Ju Seok Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyuk Soo Eun
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jong Seok Joo
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Woo Sun Rou
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jae Ho Park
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hee Seok Moon
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Eaum Seok Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Seok Hyun Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jae Kyu Sung
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Byung Seok Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyun Yong Jeong
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Min Kyung Yeo
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Kyu Sang Song
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hee Min Yoo
- Center for Bioanalysis, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
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The relationship between the number of examined lymph nodes and the efficacy of chemotherapy for gastric cancer. Surg Today 2019; 50:585-596. [PMID: 31811459 DOI: 10.1007/s00595-019-01925-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/08/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND The purpose of this research was to investigate the relationship between the number of examined lymph nodes (eLNs) and the prognosis. METHODS A retrospective examination of reports and studies carried out at two institutions was conducted. According to TNM stages, the relationship between the number of eLNs and the prognosis was analyzed. RESULTS The 5-year disease-specific survival (DSS) of all enrolled patients was 66.3%. A multivariate analysis showed the type of gastrectomy, histologic type, perineural invasion, pT stage, pN stage, chemotherapy and eLNs to be independent prognostic markers. Additionally, with the exception of patients with stage I disease, the 5-year DSS of patients who had < 25 eLNs removed had a higher risk of having a worst prognosis compared to patients who had ≥ 25 eLNs removed. Through this study, a hypothetical TNM staging system was obtained for predicting the prognosis according to the number of eLNs. Chemotherapy was able to improve the prognosis of patients with stage III and < 25 eLNs in stage II. CONCLUSIONS Extended lymphadenectomy with a new goal of dissecting 25 LNs for the evaluation of stage II-III cancer cases is recommended. Our hypothetical TNM staging system may be able to stratify the risk more accurately compared to the current AJCC 8th system. Chemotherapy can improve the prognosis in advanced gastric cancer, but its benefit may be affected by the surgical quality.
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Ryu DG, Choi CW, Kim SJ, Kang DH, Kim HW, Park SB, Nam HS. Possible indication of endoscopic resection in undifferentiated early gastric cancer. Sci Rep 2019; 9:16869. [PMID: 31728024 PMCID: PMC6856523 DOI: 10.1038/s41598-019-53374-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 10/26/2019] [Indexed: 12/20/2022] Open
Abstract
Endoscopic resection for early gastric cancer (EGC) without lymph node metastasis may be a valuable treatment option. To date, endoscopic resection for undifferentiated EGC is being investigated. We evaluated the risk of lymph node metastasis in undifferentiated EGC by examining the preoperative endoscopic findings and operated pathologic specimen. The medical records of patients who underwent surgical resection because of undifferentiated EGC between November 2008 and December 2015 were reviewed retrospectively. The risk factors associated with lymph node metastasis and the lymph node metastasis rate in the expanded indication of undifferentiated EGC were evaluated. A total of 376 patients with undifferentiated EGC (233 signet ring cell type and 143 poorly differentiated type) were analyzed. Lymph node metastasis was found in 9.8% of the patients. Among the patients who met the expanded criteria (59 patients), only one patient had lymph node metastasis (signet ring cell type without ulceration and 15 mm in size). The risk factors associated with lymph node metastasis were lesion size >20 mm (OR 3.013), scar deformity (OR 2.248), surface depression (OR 2.360), submucosal invasion (OR 3.427), and lymphovascular invasion (OR 6.296). Before endoscopic resection of undifferentiated EGC, careful selection of patients should be considered. The undifferentiated EGC with size ≥15 mm, scar deformity, surface depression, submucosal invasion, and lymphovascular invasion should be considered surgical resection instead of endoscopic resection.
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Affiliation(s)
- Dae Gon Ryu
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Cheol Woong Choi
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
| | - Su Jin Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Dae Hwan Kang
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Hyung Wook Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Su Bum Park
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Hyeong Seok Nam
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
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Gastric endoscopic submucosal dissection: a systematic review and meta-analysis on risk factors for poor short-term outcomes. Eur J Gastroenterol Hepatol 2019; 31:1234-1246. [PMID: 31498283 DOI: 10.1097/meg.0000000000001542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Endoscopic submucosal dissection (ESD) is now established as the first option to manage early gastric neoplasms, but its efficacy may vary according to diverse factors. We aimed to systematically identify risk factors for poor short-term outcomes of gastric ESD with the purpose to improve patients' selection and management. METHODS Three online databases (MEDLINE, ISI Web of Knowledge and Scopus) were searched (last search on June 2018) for poor outcomes of gastric ESD (deep submucosal invasion, piecemeal/incomplete resection, noncurative resection and local recurrence). RESULTS One hundred five studies were included referring to 52.126 ESDs. Undifferentiated histology and upper location (vs lower) were associated with submucosal invasion [odds ratio (OR) = 2.42 [95% confidence interval (CI), 1.62-3.61] and OR = 3.20 (1.04-9.86), respectively] and deep submucosal invasion [OR = 2.98 (2.02-4.39) and OR = 2.35 (1.45-3.81), respectively]. Lesion size greater than 30 mm and ulceration were associated with piecemeal resection [OR = 2.78 (1.17-6.60) and OR = 2.76 (1.23, 6.20), respectively]. Lesion size greater than 30 mm, ulceration, upper location and fibrosis were risk factors for incomplete resection [OR = 3.83 (2.68-5.49), OR = 4.06 (1.62-10.16), OR = 3.71 (2.49-5.54) and OR = 4.46 (1.66-11.96), respectively]. A noncurative resection was more often observed for lesions located in the upper third of the stomach [OR = 1.49 (1.24-1.79)], depressed morphology [OR = 1.49 (1.04-2.12)] and those outside standard criteria [OR = 3.56 (2.31-5.48)]. Older age was significantly linked with local recurrence rates [OR = 3.08 (1.13-5.02)]. CONCLUSION Several risk factors influence poor efficacy short-term outcomes of gastric ESD that may be used to inform both patients and health providers about the expected efficacy.
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Kim SJ, Choi CW. Common Locations of Gastric Cancer: Review of Research from the Endoscopic Submucosal Dissection Era. J Korean Med Sci 2019; 34:e231. [PMID: 31496141 PMCID: PMC6732260 DOI: 10.3346/jkms.2019.34.e231] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 08/02/2019] [Indexed: 12/24/2022] Open
Abstract
Detection of early-stage gastric cancer improves the prognosis of patients. Endoscopic submucosal dissection (ESD) is a curative and stomach-preserving treatment for early gastric cancer (EGC) associated with a low risk of lymph node metastasis. However, several studies have reported missed diagnosis of gastric cancer. Therefore, endoscopists are required to learn accurate diagnostic skills to eliminate endoscopic blind spots. A systematic screening protocol to map the entire stomach without blind spots reduces the risk of missed lesions. Knowledge of the features of EGC or dysplasia is essential to identify suspicious lesion. Information of the common sites of occurrence of EGC can also enable a detailed endoscopic examination to improve detection rates. Previous reports investigating the location of gastric cancers resected by ESD or surgery showed that the antrum and lesser curvature of stomach were predominantly affected. Helicobacter pylori-induced atrophic changes advance from the antrum to the corpus along the lesser curvature, predominantly affecting these areas. Gastric cancers in the antrum and the lower corpus are also commonly missed during screening examination. Therefore, a careful examination of the lower third stomach is warranted to avoid missing synchronous and metachronous gastric lesions. Knowledge of the location of EGC enables accurate endoscopic examination and detection of EGC in early stage.
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Affiliation(s)
- Su Jin Kim
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Cheol Woong Choi
- Department of Internal Medicine, Pusan National University School of Medicine and Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
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Yoshimizu S, Yamamoto Y, Horiuchi Y, Yoshio T, Ishiyama A, Hirasawa T, Tsuchida T, Fujisaki J. A suitable marking method to achieve lateral margin negative in endoscopic submucosal dissection for undifferentiated-type early gastric cancer. Endosc Int Open 2019; 7:E274-E281. [PMID: 30705962 PMCID: PMC6353714 DOI: 10.1055/a-0812-3222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 11/21/2018] [Indexed: 12/15/2022] Open
Abstract
Background and study aims Delineating undifferentiated-type early gastric cancer (UD-type EGC) from noncancerous areas is difficult. Therefore, the lateral margin negative (LM-) resection rate of endoscopic submucosal dissection (ESD) is lower for UD-type EGC than for differentiated-type EGC. This study aimed to retrospectively evaluate the effectiveness of the marking methods with circumferential biopsies in ESD for UD-type EGC. Patients and methods We analyzed the clinical outcomes of ESD in 127 patients with UD-type EGC between April 2013 and 2017. We performed diagnostic delineation of cancerous areas using magnifying endoscopy with narrow-band imaging, and four or more circumferential biopsies approximately 5 mm apart from the estimated lesion border were obtained to confirm noncancerous areas. The markings were placed on the circumferential biopsy scars, and a mucosal incision line was made outside the markings. Results Median size of the tumors and ESD specimens was 12 and 35 mm, respectively. En-bloc resection rate was 100 % (127/127), and LM- and curative resection rates were 97.6 % (124/127) and 80.3 % (102/127), respectively. Circumferential biopsy in preoperative esophagogastroduodenoscopy has successfully identified the misdiagnosis of cancerous areas of four patients (3.2 %), with three (2.4%) achieving LM- resection. LM + resection was pathologically identified in three patients (2.4 %), with all undergoing non-curative resection due to > 20-mm tumor. The proportion of patients with the shortest distance ≥ 5 mm from the lesion edge to the specimen edge was 88.2 % (112/127). Conclusion Our marking methods with circumferential biopsies may reduce LM + resections in ESD for UD-type EGC.
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Affiliation(s)
- Shoichi Yoshimizu
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Yorimasa Yamamoto
- Division of Gastroenterology, Showa University Fujigaoka Hospital, Endoscopy Center, Yokohama, Japan
| | - Yusuke Horiuchi
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Toshiyuki Yoshio
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Akiyoshi Ishiyama
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Toshiaki Hirasawa
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Tomohiro Tsuchida
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
| | - Junko Fujisaki
- Department of Gastroenterology, Cancer Institute Hospital, Tokyo, Japan
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Kim JH. Strategy for Curative Endoscopic Resection of Undifferentiated-Type Early Gastric Cancer. Clin Endosc 2019; 52:9-14. [PMID: 30674183 PMCID: PMC6370932 DOI: 10.5946/ce.2018.199] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/04/2019] [Indexed: 12/12/2022] Open
Abstract
Endoscopic resection (ER) of undifferentiated-type early gastric cancer (UD-EGC) has a lower curative resection (CR) rate than differentiated-type EGC. However, if UD-EGC is curatively resected using ER, long-term outcomes can be favorable. Thus, the strategy for CR by ER is important in UD-EGC. To achieve CR in UD-EGC, biological behaviors including tumor growth patterns must be considered. This review aims to describe what is important for curative ER of UD-EGC.
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Affiliation(s)
- Jie-Hyun Kim
- Division of Gastroenterology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Li H, Huo ZB, Kong FT, He QQ, Gao YH, Liang WQ, Liu DX. Predictive factors for lymph node metastasis and defining a subgroup treatable for laparoscopic lymph node dissection after endoscopic submucosal dissection in poorly differentiated early gastric cancer. World J Gastrointest Oncol 2018; 10:360-366. [PMID: 30364712 PMCID: PMC6198299 DOI: 10.4251/wjgo.v10.i10.360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/24/2018] [Accepted: 08/28/2018] [Indexed: 02/05/2023] Open
Abstract
AIM To investigate the predictive factors of lymph node metastasis (LNM) in poorly differentiated early gastric cancer (EGC); to guide the individual application of a combination of endoscopic submucosal dissection (ESD) and laparoscopic lymph node dissection (LLND) in a suitable subgroup of patients with poorly differentiated EGC.
METHODS We retrospectively analyzed 138 patients with poorly differentiated EGC who underwent gastrectomy with lymphadenectomy between January 1990 and December 2015. The association between the clinicopathological factors and the presence of LNM was retrospectively analyzed by univariate and multivariate logistic regression analyses. Odds ratios (OR) with 95% confidence interval (95%CI) were calculated. We further examined the relationship between the positive number of the significant predictive factors and the LNM rate.
RESULTS The tumor diameter (OR = 13.438, 95%CI: 1.773-25.673, P = 0.029), lymphatic vessel involvement (LVI) (OR = 38.521, 95%CI: 1.975-68.212, P = 0.015) and depth of invasion (OR = 14.981, 95%CI: 1.617-52.844, P = 0.024) were found to be independent risk factors for LNM by multivariate analysis. For the 138 patients diagnosed with poorly differentiated EGC, 21 (15.2%) had LNM. For patients with one, two and three of the risk factors, the LNM rates were 7.7%, 47.6% and 64.3%, respectively. LNM was not found in 77 patients that did not have one or more of the three risk factors.
CONCLUSION ESD might be sufficient treatment for intramucosal poorly differentiated EGC if the tumor is less than or equal to 2 cm in size and when LVI is absent upon postoperative histological examination. ESD with LLND may lead to the elimination of unnecessary gastrectomy in poorly differentiated EGC.
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Affiliation(s)
- Hua Li
- Department of Surgical Oncology, Xing Tai People Hospital, Xingtai 054001, Hebei Province, China
| | - Zhi-Bin Huo
- Department of Surgical Oncology, Xing Tai People Hospital, Xingtai 054001, Hebei Province, China
| | - Fan-Ting Kong
- Department of Surgical Oncology, Xing Tai People Hospital, Xingtai 054001, Hebei Province, China
| | - Qing-Qiang He
- Department of Surgical Oncology, Xing Tai People Hospital, Xingtai 054001, Hebei Province, China
| | - Yun-He Gao
- Department of General Surgery, Chinese People’s Liberation Army General Hospital, Beijing 100853, China
| | - Wen-Quan Liang
- Department of General Surgery, Chinese People’s Liberation Army General Hospital, Beijing 100853, China
| | - Deng-Xiang Liu
- Institute of Cancer Control, Xing Tai People Hospital, Xingtai 054001, Hebei Province, China
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31
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Zhao AJ, Qian YY, Sun H, Hou X, Pan J, Liu X, Zhou W, Chen YZ, Jiang X, Li ZS, Liao Z. Screening for gastric cancer with magnetically controlled capsule gastroscopy in asymptomatic individuals. Gastrointest Endosc 2018; 88:466-474.e1. [PMID: 29753039 DOI: 10.1016/j.gie.2018.05.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Gastric cancer (GC) is the fourth most common cancer and the fourth leading cause of cancer death worldwide. In some Asian countries, screening EGD has greatly improved the survival rate. However, patients' discomfort and the need for sedation may limit adherence to screening programs. Previous studies have shown good tolerance and good agreement of magnetically controlled capsule gastroscopy (MCCG) with EGD. This study was designed to assess the application of MCCG in GC detection in an asymptomatic population. METHODS In this observational cohort study, 3182 asymptomatic individuals undergoing MCCG in 99 participating medical examination centers from April to December 2016 were enrolled. Patients with ulcers and suspected malignancies were referred for gastroscopy and biopsy. The detection rate of GC and focal lesions were used to explore the application of MCCG in asymptomatic individuals. RESULTS Seven patients (0.22%) were diagnosed with GC among the enrolled 3182 individuals, accounting for 0.74% (7/948) in patients over 50 years. No gender disparity was observed. EGD and biopsy confirmed adenocarcinoma in all cases of suspected malignancy. Benign polyps, gastric ulcers, and submucosal tumors were found in 10.4%, 4.9%, and 3.6% of patients, respectively. There was a trend for the prevalence of focal lesions to increase with age. MCCG examination proved to be safe. CONCLUSIONS MCCG can detect cancer and benign lesions and is safe and clinically feasible in a large population. Studies of its role in a screening program should be considered.
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Affiliation(s)
- An-Jing Zhao
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - Yang-Yang Qian
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - Hui Sun
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - Xi Hou
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - Jun Pan
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China; National Clinical Research Center for Digestive Diseases, Shanghai, China
| | - Xiao Liu
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China; National Clinical Research Center for Digestive Diseases, Shanghai, China
| | - Wei Zhou
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China; National Clinical Research Center for Digestive Diseases, Shanghai, China
| | - Yi-Zhi Chen
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - Xi Jiang
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - Zhao-Shen Li
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China; National Clinical Research Center for Digestive Diseases, Shanghai, China
| | - Zhuan Liao
- Department of Gastroenterology, Digestive Endoscopy Center, Changhai Hospital, the Second Military Medical University, Shanghai, China; National Clinical Research Center for Digestive Diseases, Shanghai, China
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32
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Zhong Q, Sun Q, Xu GF, Fan XQ, Xu YY, Liu F, Song SY, Peng CY, Wang L. Differential analysis of lymph node metastasis in histological mixed-type early gastric carcinoma in the mucosa and submucosa. World J Gastroenterol 2018; 24:87-95. [PMID: 29358885 PMCID: PMC5757129 DOI: 10.3748/wjg.v24.i1.87] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/11/2017] [Accepted: 11/27/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the relationship between histological mixed-type of early gastric cancer (EGC) in the mucosa and submucosa and lymph node metastasis (LNM).
METHODS This study included 298 patients who underwent gastrectomy for EGC between 2005 and 2012. Enrolled lesions were divided into groups of pure differentiated (pure D), pure undifferentiated (pure U), and mixed-type according to the proportion of the differentiated and undifferentiated components observed under a microscope. We reviewed the clinicopathological features, including age, sex, location, size, gross type, lymphovascular invasion, ulceration, and LNM, among the three groups. Furthermore, we evaluated the predictors of LNM in the mucosa-confined EGC.
RESULTS Of the 298 patients, 165 (55.4%) had mucosa-confined EGC and 133 (44.6%) had submucosa-invasive EGC. Only 13 (7.9%) cases of mucosa-confined EGC and 30 (22.6%) cases of submucosa-invasive EGC were observed to have LNM. The submucosal invasion (OR = 4.58, 95%CI: 1.23-16.97, P = 0.023), pure U type (OR = 4.97, 95%CI: 1.21-20.39, P = 0.026), and mixed-type (OR = 5.84, 95%CI: 1.05-32.61, P = 0.044) were independent risk factors for LNM in EGC. The rate of LNM in mucosa-confined EGC was higher in the mixed-type group (P = 0.012) and pure U group (P = 0.010) than in the pure D group, but no significant difference was found between the mixed-type group and pure U group (P = 0.739). Similarly, the rate of LNM in the submucosa-invasive EGC was higher in the mixed-type (P = 0.012) and pure U group (P = 0.009) than in the pure D group but was not significantly different between the mixed-type and pure U group (P = 0.375). Multivariate logistic analysis showed that only female sex (OR = 5.83, 95%CI: 1.64-20.70, P = 0.028) and presence of lymphovascular invasion (OR = 13.18, 95%CI: 1.39-125.30, P = 0.020) were independent risk factors for LNM in mucosa-confined EGC, while histological type was not an independent risk factor for LNM in mucosa-confined EGC (P = 0.106).
CONCLUSION For mucosal EGC, histological mixed-type is not an independent risk factor for LNM and could be managed in the same way as the undifferentiated type.
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Affiliation(s)
- Qian Zhong
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Qi Sun
- Department of Pathology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Gui-Fang Xu
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Xiu-Qin Fan
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Yuan-Yuan Xu
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Fei Liu
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Shi-Yi Song
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Chun-Yan Peng
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
| | - Lei Wang
- Department of Gastroenterology, the Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, Jiangsu Province, China
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