Clinical analysis of patients with early gastric cancer undergoing non-curative endoscopic resection followed by additional surgical procedures / 中华消化内镜杂志

Objective:To analysis the necessity of additional surgical intervention for non-curative endoscopic resection patients with early gastric cancer.Methods:A retrospective analysis was conducted on 73 patients with early gastric cancer who underwent additional surgical procedures after non-curative endoscopic resection at Chinese PLA General Hospital from July 2009 to May 2023. The main outcome measures included pathological classification, positive horizontal margins, positive vertical margins, invasion depth, vascular and lymphatic invasion, eCura grade, lymph node metastasis, and overall survival rate.Results:A total of 73 patients with early gastric cancer who were determined to have non-curative endoscopic resection underwent additional surgical procedures, including 58 males and 15 females with a mean age of 61 (53-67) years. In terms of the site of onset, 37 cases were located in the upper part of the stomach, 24 cases in the lower part, 11 cases in the middle part, and 1 case had multiple lesions. In terms of pathological classification, 43 cases were highly differentiated tubular adenocarcinoma, 16 cases were mucinous/signet ring cell carcinoma, 10 cases were poorly differentiated tubular adenocarcinoma, and 4 cases were high-grade intraepithelial neoplasia. In terms of morphological classification, 22 cases were type 0-Ⅱa, 43 cases were type 0-Ⅱb, and 8 cases were type 0-Ⅲ. In terms of invasion depth, 17 cases were mucosal cancer, 23 cases had submucosal invasion less than 500 μm, and 33 cases had submucosal invasion more than 500 μm. In terms of vascular and lymphatic invasion, 8 cases had lymphatic vessel invasion and 8 cases had venous invasion. Among the 73 patients, 4 were diagnosed as having eCura A, 5 as eCuraB, 4 as eCura C1, and 60 as eCura C2. Among the 60 patients diagnosed as having eCura C2, only 2 cases (3.3%) were found to have lymph node metastasis around the stomach based on postoperative pathological evaluation. Among the 73 endoscopic specimens, 7 patients had positive horizontal margins, 21 had positive vertical margins, and 2 had positive margins in both directions, totaling 30 patients with positive horizontal or vertical margins. According to postoperative pathological evaluation, 9 cases (30.0%) had residual tumors in the original site. Among the 73 patients, 5 were lost to follow-up and 4 died, resulting in an overall survival rate of 94.12% (64/68) and disease-specific survival rate of 98.53% (67/68). The follow-up time of patients was 61.37 (10-166) months.Conclusion:For early gastric cancer patients with eCura C2 following non-curative endoscopic resection, additional surgery is feasible. However, the proportion of patients with actual lymph node metastasis is relatively low.

Risk factors and follow-up of positive resection margins after endoscopic submucosal dissection for early gastric cancer and precancerous lesions / 中华消化内镜杂志

Objective:To investigate the risk factors for positive margins after endoscopic submucosal dissection (ESD) for early gastric cancer and precancerous lesions, and to follow up the recurrence.Methods:The endoscopic, clinical and pathological data of 489 patients with early gastric cancer or precancerous lesions treated by ESD in Fujian Provincial Hospital from January 2015 to December 2020 were retrospectively collected. They were categorized into a negative group (371 cases), a low-grade intraepithelial neoplasia (LGIN)-positive group (79 cases), and a high-grade intraepithelial neoplasia (HGIN) or cancer-positive group (39 cases) according to the different margins. Logistic regression was used to analyze the risk factors for positive margins, the Kaplan-Meier method and log-rank test to compare the risk of recurrence in different margin groups, and the Cox proportional risk regression model to explore the associated factors that caused recurrence in those with positive margins.Results:In the 489 patients, the positive resection margin rate was 24.1% (118/489), of which HGIN or cancer accounted for 33.1% (39/118). LGIN-positive margin was more likely to occur for lesions larger than 10 cm 2 ( OR=1.58, 95% CI: 1.13-2.08, P=0.033), in the presence of ulcers ( OR=2.92, 95% CI: 1.37-4.54, P=0.012) and for 1-2 years of ESD experience [ OR=1.69 (1-2 years VS 5-6 years), 95% CI: 1.51-1.94, P=0.026]. Those located in the upper 1/3 of the stomach [ OR=3.64 (upper 1/3 VS lower 1/3), 95% CI: 1.27-5.50 P=0.010] and submucosal infiltration (SM1 VS M1+M2: OR=2.37, 95% CI: 1.04-5.72, P=0.028; SM2 VS M1+M2: OR=6.08, 95% CI: 1.31-12.75, P=0.002) were high risk factors for HGIN/cancer-positive margin. Postoperative follow-up was completed in 337 patients, with a median follow-up time of 26.0 (22) months. The overall cumulative recurrence was 5.3% (18/337), 2.1% (5/239) in the negative margin group, 8.3% (6/72) in the LGIN-positive margin group, and 26.9% (7/26) in the HGIN/cancer-positive group, with statistically significant differences among the 3 groups ( P<0.05). Risk factors for recurrence in the positive margin group included positive basal margins ( HR=5.17, 95% CI: 1.47-14.09, P=0.011) and SM1 invasion ( HR=4.82, 95% CI: 1.38-14.77, P=0.013). Conclusion:Positive margins after ESD for early gastric cancer and precancerous lesions are related to lesion location, size, presence of ulceration, depth of infiltration, and endoscopists' experience. The overall risk of recurrence is higher in those with positive margins than in those with negative margins. Additional treatments need to be considered comprehensively for those with submucosal invasion and positive basal margins.

Definition of tumor rupture in gastrointestinal stromal tumor / 中华胃肠外科杂志

Tumor rupture is a common clinical event in the process of tumorigenesis, progression, diagnosis and treatment of gastrointestinal stromal tumor, which is closely associated with tumor recurrence, metastasis and poor prognosis. Tumor rupture may be associated with some intrinsic biological aggressiveness qualities, such as large tumor size, high mitotic count, and KIT exon 11 deletion mutations involving codons 557 and 558, and may be relatively more frequent with small intestine GIST and excellent response to imatinib neoadjuvant therapy resulting in tumor tissue rapid liquefacient and necrosis. The triggering factors involve sudden increase in abdominal pressure, external pressure, collision and improper surgical operation, etc. Tumor rupture is considered as an important risk factor of recurrence after macroscopically complete resection of tumor, and an indication for determining interval or even lifelong adjuvant therapy with imatinib according to guidelines. However, there is no consensus or universally accepted definition of tumor rupture, and, consequently, its incidence varies greatly across reported series and lacks detailed epidemiological data. Without pre-defined criteria, it is difficult to assess the clinical significance of rupture. We reviewed the relevant literature and international guidelines, and generally divided tumor rupture into spontaneous rupture and iatrogenic rupture. Based on the Oslo criteria, we proposed the following six definitions for tumor rupture: (1) tumor fracture or spillage; (2) blood-stained ascites; (3) gastrointestinal perforation at the tumor site; (4) microscopic infiltration of an adjacent organ; (5) intralesional dissection or piecemeal resection; (6) incisional biopsy. The following types of minor defects of tumor integrity should not be defined as rupture: (1) mucosal defects or spillage contained within the gastrointestinal lumen; (2) microscopic tumor penetration of the peritoneum or iatrogenic damage only to the serosa; (3) uncomplicated transperitoneal needle biopsy; (4) R1 resection. In addition, we further emphasize the importance of identifying risk factors of tumor rupture, prevention and positive intervention.

Margen positivo (R1) en la biopsia intraoperatoria durante una gastrectomía total por cáncer gástrico / Positive margin (R1) in the intraoperative biopsy during a total gastrectomy for gastric cancer

Resumen El cáncer gástrico es una patología de alta incidencia en Chile. Afortunadamente es baja la incidencia de márgenes R1 cuando se realiza una cirugía con intención curativa. Al tener un tumor subcardial o cardial es perentorio realizar una biopsia rápida (intraoperatoria), en caso que ésta resulte positiva, es difícil tomar una decisión sobre qué realizar a continuación, ya que el realizar una esofagoyeyunoanastomosis intratorácica aumenta el riesgo quirúrgico. Para esto, es de suma importancia tener la información de las características histopatológicas del tumor, el riesgo de filtración, la recurrencia, la sobrevida, las terapias adyuvantes y la realidad país. Se realizó una revisión de la literatura con el fin de poder guiar la toma de decisiones.

Gastric cancer is a pathology with a high incidence in Chile, fortunately, the incidence of R1 margins is low when performing surgery with curative intent. When having a sub cardial or cardial tumor, it is essential to perform a rapid (intraoperative) biopsy, if this is positive when cutting the esophagus just under the pillars, it is difficult to make the decision of what to do next, since performing an inthrathoracic esophagojejunostomy increases the surgical risk. For this, it is very important to have information about the histopathological characteristics of the tumor, the leakage risk, there currence, the survival, the adjuvant therapies and the reality of the country. A review of the literature was done in order to guide the decisions.

Effect of partial nephrectomy with positive margin on recurrence and metastasis in patients with renal cancer: a Meta-analysis / 中华泌尿外科杂志

Objective Systematic assessment of the effect of positive margin on recurrence and metastasis in patients with renal cell carcinoma who underwent partial nephrectomy.Methods The literature were searched on the rate of recurrence and metastasis in patients with positive margin and partial nephrectomy published in PubMed,Embase,Cochrane,China Biomedical Literature Database,China Knowledge Network,VIP Chinese Science and Technology Journal Database,and Wanfang Chinese Database up to December 2018.The quality of the literature included in this study was evaluated by two reviewers,and a meta-analysis was performed on the literature that met the inclusion criteria using the Revman 5.0 statistical software provided by Cochrane Collaboration.Results A total of seven articles were included,six of which were case-control studies,and the other one was a cohort study.These seven articles consisted of 6 928 patients,including 407 positive margins and 6 521 negative margins.For recurrence and metastasis,407 positive margins were composed of 25 recurrences and 21 distant metastases,while 6 521 negative margins consisted of 68 recurrence and 96 distant metastasis.The disease-free survival rate of patients with positive margins is lower than that with negative margins (OR =4.92,95％ CI 2.66-9.08,P ＜ 0.001).The results of subgroup analysis of patients with recurrence and metastasis based on positive margin exhibited that positive margin increased the risk of recurrence in patients undergoing partial nephrectomy (OR =5.05,95％ CI 2.06-12.37,P ＜0.001),as well as the risk of metastasis (OR =3.70,95％ CI 2.18-6.26,P ＜0.001).Since different studies consisted of patients with different tumor staging,a stratified analysis was conducted and the disease-free survival rate of patients with positive margins decreased compared with that of negative margins (OR =4.13,95％ CI 2.54-6.70,P ＜ 0.001),although there were differences in the staging of tumor patients included in different studies,which did not weaken the results.Conclusions Positive margins increase the risk of recurrence and metastasis in patients undergoing partial nephrectomy.

Effect of partial nephrectomy with positive margin on recurrence and metastasis in patients with renal cancer: a Meta-analysis / 中华泌尿外科杂志

Objective@#Systematic assessment of the effect of positive margin on recurrence and metastasis in patients with renal cell carcinoma who underwent partial nephrectomy.@*Methods@#The literature were searched on the rate of recurrence and metastasis in patients with positive margin and partial nephrectomy published in PubMed, Embase, Cochrane, China Biomedical Literature Database, China Knowledge Network, VIP Chinese Science and Technology Journal Database, and Wanfang Chinese Database up to December 2018. The quality of the literature included in this study was evaluated by two reviewers, and a meta-analysis was performed on the literature that met the inclusion criteria using the Revman 5.0 statistical software provided by Cochrane Collaboration.@*Results@#A total of seven articles were included, six of which were case-control studies, and the other one was a cohort study. These seven articles consisted of 6 928 patients, including 407 positive margins and 6 521 negative margins. For recurrence and metastasis, 407 positive margins were composed of 25 recurrences and 21 distant metastases, while 6 521 negative margins consisted of 68 recurrence and 96 distant metastasis. The disease-free survival rate of patients with positive margins is lower than that with negative margins (OR=4.92, 95%CI 2.66-9.08, P<0.001). The results of subgroup analysis of patients with recurrence and metastasis based on positive margin exhibited that positive margin increased the risk of recurrence in patients undergoing partial nephrectomy (OR=5.05, 95%CI 2.06-12.37, P<0.001), as well as the risk of metastasis (OR=3.70, 95%CI 2.18-6.26, P<0.001). Since different studies consisted of patients with different tumor staging, a stratified analysis was conducted and the disease-free survival rate of patients with positive margins decreased compared with that of negative margins (OR=4.13, 95%CI 2.54-6.70, P<0.001), although there were differences in the staging of tumor patients included in different studies, which did not weaken the results.@*Conclusions@#Positive margins increase the risk of recurrence and metastasis in patients undergoing partial nephrectomy.

The impact of intraoperative pancreatic resection margin status on prognosis of patients with pancreatic head cancer / 中华肝胆外科杂志

Objective@#To study the impact of intraoperative pancreatic resection margin status on prognosis in patients with pancreatic head cancer.@*Methods@#The clinical and follow-up data of 109 patients who underwent pancreaticoduodenectomy at Ningbo Lihuili Hospital from March 2012 to October 2018 were analyzed retrospectively. The association of intraoperative resection margin status and other clinicopathological factors on prognosis was analyzed by the Kaplan-Meier method and the Cox proportional hazard model. Logistic multivariate analysis was used to study factors influencing the margin status.@*Results@#Of 109 patients, 20 had a positive intraoperative resection margin, and 89 had a negative margin. Postoperative pathological examination showed that all the patients had a negative surgical margin. Univariate analysis suggested that CA19-9 before operation, preoperative adjuvant chemotherapy, intraoperative pancreatic resection margin status, maximum diameter of tumor, perineural invasion, lymphovascular invasion, tumor differentiation, and N staging were significantly related to survival in the entire cohort (all P<0.05). Multivariate analysis showed CA19-9 ≥37 IU/ml, perineural invasion, lymph node metastasis, tumor diameter ≥4 cm and poor tumor differentiation were independent risk factors of bad prognosis (P<0.05). Univariate analysis of prognosis showed significant differences in lifetime prognosis between the positive margin group and the negative group (median survival time: 11 months vs. 21 months, P<0.05), but a positive resection margin was not an independent risk factor on prognosis (P>0.05). Analysis of the clinicopathological factors between the two groups showed that in the positive pancreatic neck margin group, the distribution of adverse pathologic factors like low tumor differentiation, tumor diameter ≥4 cm, perineural invasion and lymphovascular invasion were significantly different compared with the negative group (P<0.05). Tumor diameter ≥4 cm (OR=5.72, 95%CI: 1.60~20.49) and low tumor differentiation (OR=3.79, 95%CI: 1.20~11.95) were independent influencing factors of positive margin on logistic multivariate analysis.@*Conclusions@#Intraoperative pancreatic positive margin was not an independent risk factor of prognosis, but it was meaningful in predicting survival. Presence of positive margins was often combined with existence of some adverse pathological features, such as large tumor diameter and low tumor differentiation. Prognosis of patients with a positive margin was often poor. A positive pancreatic margin was an intraoperative marker of poor tumor biology in patients with pancreatic ductal adenocarcinoma.

Risk factor analyses of positive margins of conization specimen and post-cone residual disease in patients with cervical intraepithelial neoplasia grade 3 / 医学研究生学报

[Abstract ] Objective Positive margins of conization specimen for cervical intraepithelial neoplasia grade (CIN)3 is a high risk factor of continuous cervical lesions or progress to early invasive carcinoma .The aim of this study was to evaluate the risk factors of positive margins of conization specimen and post-cone residual disease in hysterectomy specimens following conization for CIN 3. Methods Clinical data from 218 patients with CIN 3 underwent hysterectomy after conization from 2001 to 2013 were analyzed retro-spectivly.Multi-factors logistic regression was performed to determine the independent risk factors for positive margins of conization specimen and post-cone residual disease. Results Fifty five cases(25.2%) had positive margin of conization specimen , and the independent risk factors were unsatisfactory colposcopy (OR:5.18,95%CI:2.49-11.10), width of conization specimen smaller than 2 cm (OR:7.68,95%CI:2.31-28.10) and pathology of CIN3 with carcinoma in situ (OR:4.38,95%CI:1.67 -12.10).Forty seven patients (21.6%) had post-cone residual disease , and the independ-ent risk factors were length of conization specimen smaller than 1.5 cm (OR:2.45,95%CI:1.12-5.69), pathology of CIN3 with carci-noma in situ (OR:4.96,95%CI:2.17-11.70) and status of coniza-tion margins (OR:4.34,95%CI:1.95-9.78). Conclusion The satisfaction of colposcopic examination, conization specimen di-ameters including width and length , CIN3 with carcinoma in situ and status of conization margins could contribute to positive margins of conization or residual disease in subsequent hysterectomy specimens .More attention should be paid to such a group of CIN 3 patients clinically.

Clinical efficacy of total pancreaticoduodenectomy for the pancreatic head adenocarcinoma with positive neck margin / 中华消化外科杂志

Objective To investigate the clinical efficacy of total pancreaticoduodenectomy for the pancreatic head adenocarcinoma with positive neck margin.Methods The clinical data of 15 patients with pancreatic head adenocarcinoma and had positive neck margin who received total pancreaticoduodenectomy at the Union Hospital of Fujian Medical University from August 2009 to May 2014 were retrospectively analyzed.Patients were followed up by out-patient examination or telephone interview till August 2014.Results Total pancreaticoduodenectomy was successfully carried out on the 15 patients.The operation time was 4.0-10.0 hours (mean,6.5 hours),and the volume of blood loss was 300-2 000 mL (mean,800 mL).The duration of postoperative hospital stay was 13.0-35.0 days (mean,22.3 days).The main postoperative complications included pulmonary infection (3 cases),abdominal infection (2 cases)and low blood glucose (2 cases).No interoperative death,bile leakage or gastrointestinal anastomotic fistula occurred.The blood glucose of most of the patients was controlled by insulin or pancreatin.No stomachache,steatorrhea or malnutrition occurred in all the patients.The mean time of postoperative follow-up was 21 months (range,3 months to 5 years).Three patients survived within 1 year,2 survived for 1-2 years,5 survived for more than 2 years and 1 survived for more than 5 years.Four patients with follow-up time under 6 months survived till now.Five patients had liver metastasis at postoperative month 6.Conclusion Total pancreaticoduodenectomy might be necessary for the pancreatic head adenocarcinoma with positive neck margin to achieve R0 resection.

Analysis of residual tumor based on pathologic severity and site of positive margin after cold-knife conization of the uterine cervix / 대한산부인과학회지

OBJECTIVE: To evaluate correlation of sites of positive margin and residual tumor and to establish management after conization. METHODS: Of 599 cold-knife conizations [15 (2.6%) with cervical intraepithelial neoplasia (CIN) I, 37 (6.1%) with CIN II, 450 (75.1%) with CIN III, 97 (16.2%) with microinvasion] performed at our institution from January, 1993 to June, 2006, 144 patients (24.0%) had positive margins and 113 patients were included in the retrospective study excluding 31 cases that were not followed more than 12 months. Correlation of conization pathology and residual tumor according to sites of positive margin were evaluated. RESULTS: The prevalence rates of positive margins were 6.7% (1/15) in CIN I, 21.6% (8/37) in CIN II, 21.1% (95/450) in CIN III, and 41.2% (40/97) in microinvasion. The prevalence rate of positive margin increased with severity of conization pathology (P=0.0001). Of 113 patients followed more than 12 months, 27.4% (31/113) had residual tumor [0.0% (0/1) in CIN I, 12.5% (1/8) in CIN II, 18.9% (14/74) in CIN III, and 53.3% (16/30) in microinvasion]. The prevalence rate of residual tumor increased with severity of conization pathology (P=0.0028). Residual tumor was more common in patients in whom both endocervical and exocervical margins or in whom only the endocervical margin were involved than in those in whom only exocervical margin was involved [87.5% (7/8) or 35.3% (24/68) versus 0% (0/37), respectively]. CONCLUSIONS: Expectant management is reasonable for patients with positive margin after conization. However, careful follow-up of these patients is essential, particularly in endocervical involvement.

Evaluation of the following treatment after cervical conization with positive margins for patients with cervical neoplasm / 中国癌症杂志

Background and purpose:Cervical conization, including high frequency loop electrosurgical excision procedure(LEEP) has been widely used in the treatment of cervical diseases, but how to deal with the patients with pathological positive margin is a problem for clinicians.The purpose of this study was to discuss the option of adjuvant treatment after cervical conization with positive margins for patients with cervical neoplasm.Methods:The data of 528 patients who had cervical conization from 1998 to 2008 was reviewed, among which 54 patients with pathological positive margin was retreated and analyzed.Results:Fifty-four patients were divided into observation group and treatment group, 17 cases were in observation group and 37 cases in treatmeat proup.The recurrence / duration / progress rate was 17.6%(3/17), in treatment group it was 2.7%(1/37) in observation.CINⅠ-Ⅱ positive margins in both group had no recurrence;among 14 patients with CINⅢ, 1 lesion persisted, and 1 progressed to cervical squamous cell carcinoma, none in treatment group was recurrent;For those 10 patients with micro-invasive margin-positive cases, 1 progressed to squamous cell carcinoma, the remaining 9 cases were followed up for 26 months without recurrence after operation.One case in invasive cancer group had recurrence.Conclusion:The patients with CINⅢ margin-positive patients after conization should receive individualized treatment.The patient with microinvasive carcinoma should be retreated with either re-conization or hysterectomy;if with margin-positive CINⅢ after conization, or re-conization or directly treated according to guideline addressing for ⅠB, if margin showed microinvasive carcinoma.The patients with margin-positive invasive carcinoma after conization should be treated according to guideline.

Radiotherapy in Incompletely Resected Gastric Cancers / 대한방사선종양학회지

PURPOSE: Although local recurrence rates of stomach cancer after radical surgery have been eported in the range of 30-70%, the role of postoperative adjuvant therapy has not been established. We report the result of radiotherapy in resected stomach cancer with positive surgical margin to elucidate the role of postoperative radiotherapy. MATERIALS AND METHODS: From June 1991 to August 1996, twenty five patients with positive surgical margins after radical gastrectomy were treated with postoperative radiotherapy and chemotherapy. Median dose of radiation was 55.8Gy and the range was 44.6-59.4Gy. Second cycle of chemotherapy was delivered concurrently with radiation and total number of six cycles were delivered. Twenty three had adenocarcinoma and the other two had leiomyosarcoma. The numbers of patients with stage IB, II, IIIA, IIIB, and IV were 1, 2, 11, 10 and 1 respectively. Positive margins at distal end of the stomach were in 17 patients and proximal in 5. The other three patients had positive margin at the sites of adjacent organ invasion. Minimum and median follow-up periods were 12 months and 18 months, respectively. RESULTS: Twenty-four of 25 patients received prescribed radiation dose and RTOG grade 3 toxicity of UGI tract was observed in 3, all of which were weight loss more than 15% of their pretreatment weight. But hematemesis, melena, intestinal obstruction or grade 4 toxicity were not found. Locoregional failure within the radiation field was observed in 7 patients, and distant metastasis in 10 patients. Sites of locoregional recurrences involve anastomosis/ remnant stomach in 3, tumor bed/duodenal stump in 3, regional lymph node in 1 patient. Peritoneal seeding occurred in 6, liver metastases in 2, and distant nodes in 2 patients. Four year disease specific survival rate was 40% and disease free survival was 48%. Median survival was 35 months and median disease free survival time was 26 months. Stages and radiation dose were not significant prognostic factors for locoregional failures. CONCLUSION: Although all patients in this study had positive surgical margins, locoregional failure rate was 28%, and 4 year disease specific survival rate was 40%. Considering small number of patients and relatively short follow-up period, it is not certain that postoperative radiotherapy lowered locoregional recurrences, but we could find a possibility of the role of postoperative radiotherapy in patients with high risk factors.