1.Expert consensus on the treatment of oral diseases in pregnant women and infants.
Jun ZHANG ; Chenchen ZHOU ; Liwei ZHENG ; Jun WANG ; Bin XIA ; Wei ZHAO ; Xi WEI ; Zhengwei HUANG ; Xu CHEN ; Shaohua GE ; Fuhua YAN ; Jian ZHOU ; Kun XUAN ; Li-An WU ; Zhengguo CAO ; Guohua YUAN ; Jin ZHAO ; Zhu CHEN ; Lei ZHANG ; Yong YOU ; Jing ZOU ; Weihua GUO
International Journal of Oral Science 2025;17(1):62-62
With the growing emphasis on maternal and child oral health, the significance of managing oral health across preconception, pregnancy, and infancy stages has become increasingly apparent. Oral health challenges extend beyond affecting maternal well-being, exerting profound influences on fetal and neonatal oral development as well as immune system maturation. This expert consensus paper, developed using a modified Delphi method, reviews current research and provides recommendations on maternal and child oral health management. It underscores the critical role of comprehensive oral assessments prior to conception, diligent oral health management throughout pregnancy, and meticulous oral hygiene practices during infancy. Effective strategies should be seamlessly integrated across the life course, encompassing preconception oral assessments, systematic dental care during pregnancy, and routine infant oral hygiene. Collaborative efforts among pediatric dentists, maternal and child health workers, and obstetricians are crucial to improving outcomes and fostering clinical research, contributing to evidence-based health management strategies.
Humans
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Pregnancy
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Female
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Infant
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Consensus
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Mouth Diseases/therapy*
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Pregnancy Complications/therapy*
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Oral Health
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Infant, Newborn
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Delphi Technique
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Oral Hygiene
2.Clinical analysis of traditional surgery and circumcision stapler in the treatment of children with phimosis and prepuce
Yonglang TU ; Guohua GAO ; Linde WU ; Xiyuan CHEN
China Modern Doctor 2024;62(5):44-46,50
Objective To investigate the surgical effect and incidence of complications of traditional circumcision and disposable circumcision stapler in the treatment of phimosis and overlength of prepuce.Methods A retrospective analysis of 261 children with excessive phimosis and prepuce treated in the Department of Pediatric Surgery of our hospital from January 2021 to January 2023.The control group included 129 cases,who were treated by traditional methods,and the others 132 cases as test group,were treated by disposable circumferential stapler.We observed correlation indicators of intraoperative and postoperative between the two groups.Operation time,intraoperative blood loss were intraoperative indicators,and,postoperative pain degree,postoperative incision healing time,severe edema of incision margin,incision dehiscence,postoperative rebleeding,postoperative infection,and appearance satisfaction were observed in the postoperation period.Results The operation time,intraoperative blood loss,and postoperative rebleeding of the disposable circumferential stapler group were significantly less than those of the control group,while the postoperative incision healing time and the incidence of severe edema of the incision in the control group had obvious advantages compared with the test group.There was no significant difference in pain degree,postoperative infection rate,incision dehiscence and appearance satisfaction.Conclusions The benefits of traditional circumcision are that postoperative recovery is relatively fast and the degree of edema at the incision margin is mild.And complete hemostasis,surgical operation easily,safety,and suitable for subordinate medical institutions are advantages of disposable circumcision stapler compare with traditional model,meanwhile it is not as good as traditional methods in terms of postoperative recovery.
3.A subcutaneous transplanted tumor mouse model of oral cancer overexpressing miR-181a-5p study of small intestine metabolomics
Xuehai WU ; Yiyan YANG ; Xiaotang WANG ; Wenlu CHEN ; Xiaona SONG ; Tian WANG ; Guohua SONG
Chinese Journal of Comparative Medicine 2024;34(1):8-17
Objective To analyze the effects of miR-181a-5p overexpression on metabolites in the small intestines of mice with subcutaneous oral cancer by detecting changes in metabolites and metabolic pathways.Methods Three groups were included in study:Control group,negative control and miR-181a-5p overexpression group.To establish a subcutaneous oral cancer model in mice,variously treated cell suspensions were subcutaneously injected into the upper right of the groin in female M-NSG severely immunodeficient mice.Changes in pathology and small intestinal tissues were assessed by HE staining.Changes in mouse body weight were also assessed.Tandem orbitrap mass spectrometry and ultra-high performance liquid chromatography-tandem time-of-flight mass spectrometry,were used to examine metabolites in the small intestines.By pre-analyzing the original data and quality rating sample data,XCMS was able to assess which metabolites were different among the groups.To identify unique metabolic pathways,KEGG enrichment analysis was used.Results A total of 170 distinct metabolites were found in the small intestinal tissues of Control and NC groups.Choline metabolism,alanine,aspartate,and glutamate metabolism,GABA synaptic metabolism,glycerophospholipid metabolism,cAMP signaling route,cancer center carbon metabolism,and niacin and niacin amine metabolic pathways were important signaling pathways for metabolite enrichment.In the NC group,16 distinct metabolites with VIP values larger than 2 were found in the small intestines compared with the OE group overexpressing miR-181a-5p.Glycerin phosphorylcholine,palmitic acid,3-hydroxybutyl carnitine,and β-hydroxybutyric acid were among the metabolites that significantly varied.The primary enhanced metabolic pathway was the choline pathway.Conclusions Mouse small intestines underwent slight changes from subcutaneous oral cancer with the greatest effect on metabolites critical for energy metabolism.The choline metabolic pathway was the pathway that selected absolutely metabolites in mouse small intestines with subcutaneous grafts of oral cancer.
4.Feasibility study of low tube voltage and low contrast medium combined with IMR technology in 3DCTA of vertebral artery V3 segment
Junlin YANG ; Duchang ZHAI ; Xiuzhi ZHOU ; Rong LIU ; Guohua FAN ; Wu CAI
Chongqing Medicine 2024;53(1):5-10
Objective To investigate the feasibility of low-voltage,automatic tube current adjustment(ATCM)and low contrast agent concentration,dose and injection rate combined with full-model iterative re-construction(IMR)in vertebral artery V3-segment three-dimensional CT angiography(3DCTA).Methods A total of 60 patients with suspected upper cervical spine,craniocervical junction lesions undergoing cervical vertebral artery V3 segment 3DCTA in this hospital from November 2019 to May 2020 were selected and divided into the group A and B by adopting the random number table method,30 cases in each group.The group A adopted the ATCM technology of 80 kV,average tube current of 50 mAs,25 mL of contrast agent io-hexol(iodine content 300 mg/mL)combined IMR technology with an injection rate of 3 mL/s,while the group B adopted 120 kV,150 mAs fixed tube current,50 mL injection rate of 5 mL/s contrast agent iopamidol(iodine content 370 mg/mL)combined filter back projection(FBP)reconstruction technology.CT value,noise,signal-to-noise ratio(SNR),contrast noise ratio(CNR)and image sensitivity(FOM)were measured and compared between the two groups and the quality of the resulting images was evaluated.The CT volumet-ric dose index(CTDIvol)and dose-length product(DLP)were recorded,and the effective dose(ED)was cal-culated.Results There was no statistically significant difference in the vertebral arterial CT value between the two groups(P>0.05),but the noise of the group A was lower than that of the group B(P<0.05),SNR,CNR and FOM of the group A were greater than those of the group B(P<0.05).The image quality of the two groups met the requirements of clinical diagnosis[(4.78±0.41)points vs.(4.85±0.35)points],and there was no statistically significant difference in the subjective evaluation of image quality(P>0.05).The CTDIvol,DLP and ED levels in the group A were lower than those in the group B(P<0.05).The iodine in-takes of contrast medium in the group A and group B were 7.5 g and 18.5 g,respectively,and the iodine flow rates of contrast agent were 0.9 and 1.85 mg/s,respectively,and compared with group B,the iodine intake and iodine flow rate of the group A were decreased by 59.5%and 51.4%,respectively.Conclusion Low tube voltage ATCM and low contrast concentration,dose and injection rate combined with IMR technology can not only ensure the 3DCTA image quality of vertebral artery V3 segment,but also reduce the radiation dose re-ceived by the patients,and reduce the iodine intake and iodine flow rate of contrast agent.
5.Multicenter retrospect analysis of early clinical features and analysis of risk factors on prognosis of elderly patients with severe burns
Qimin MA ; Wenbin TANG ; Xiaojian LI ; Fei CHANG ; Xi YIN ; Zhaohong CHEN ; Guohua WU ; Chengde XIA ; Xiaoliang LI ; Deyun WANG ; Zhigang CHU ; Yi ZHANG ; Lei WANG ; Choulang WU ; Yalin TONG ; Pei CUI ; Guanghua GUO ; Zhihao ZHU ; Shengyu HUANG ; Liu CHANG ; Rui LIU ; Yongji LIU ; Yusong WANG ; Xiaobin LIU ; Tuo SHEN ; Feng ZHU
Chinese Journal of Burns 2024;40(3):249-257
Objective:To investigate the early clinical characteristics of elderly patients with severe burns and the risk factors on prognosis.Methods:This study was a retrospective case series study. Clinical data of 124 elderly patients with severe burns who met the inclusion criteria and were admitted to the 12 hospitals from January 2015 to December 2020 were collected, including 4 patients from the Fourth People's Hospital of Dalian, 5 patients from Fujian Medical University Union Hospital, 22 patients from Guangzhou Red Cross Hospital of Jinan University, 5 patients from Heilongjiang Provincial Hospital, 27 patients from the First Affiliated Hospital of Naval Medical University, 9 patients from the First Affiliated Hospital of Nanchang University, 10 patients from Affiliated Hospital of Nantong University, 9 patients from Tongren Hospital of Wuhan University & Wuhan Third Hospital, 12 patients from the 924 th Hospital of PLA, 6 patients from Zhangjiagang First People's Hospital, 4 patients from Taizhou Hospital of Zhejiang Province, and 11 patients from Zhengzhou First People's Hospital. The patients' overall clinical characteristics, such as gender, age, body mass index, total burn area, full-thickness burn area, inhalation injury, causative factors, whether combined with underlying medical diseases, and admission time after injury were recorded. According to the survival outcome within 28 days after injury, the patients were divided into survival group (89 cases) and death group (35 cases). The following data of patients were compared between the two groups, including the basic data and injuries (the same as the overall clinical characteristics ahead); the coagulation indexes within the first 24 hours of injury such as prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time, D-dimer, fibrinogen degradation product (FDP), international normalized ratio (INR), and fibrinogen; the blood routine indexes within the first 24 hours of injury such as white blood cell count, platelet count, neutrophil-to-lymphocyte ratio, monocyte count, red blood cell count, hemoglobin, and hematocrit; the organ function indexes within the first 24 hours of injury such as direct bilirubin, total bilirubin, urea, serum creatinine, aspartate aminotransferase, alanine aminotransferase, total protein, albumin, globulin, blood glucose, triglyceride, total cholesterol, alkaline phosphatase, creatine kinase, electrolyte indexes (potassium, sodium, chlorine, calcium, magnesium, and phosphorus in blood), uric acid, myoglobin, and brain natriuretic peptide; the infection and blood gas indexes within the first 24 hours of injury such as procalcitonin, C-reactive protein, pH value, oxygenation index, base excess, and lactate; treatment such as whether conducted with mechanical ventilation, whether conducted with continuous renal replacement therapy, whether conducted with anticoagulation therapy, whether applied with vasoactive drugs, and fluid resuscitation. The analysis was conducted to screen the independent risk factors for the mortality within 28 days after injury in elderly patients with severe burns. Results:Among 124 patients, there were 82 males and 42 females, aged 60-97 years, with body mass index of 23.44 (21.09, 25.95) kg/m 2, total burn area of 54.00% (42.00%, 75.00%) total body surface area (TBSA), and full-thickness burn area of 25.00% (10.00%, 40.00%) TBSA. The patients were mainly combined with moderate to severe inhalation injury and caused by flame burns. There were 43 cases with underlying medical diseases. The majority of patients were admitted to the hospital within 8 hours after injury. There were statistically significant differences between patients in the 2 groups in terms of age, total burn area, full-thickness burn area, and inhalation injury, and PT, APTT, D-dimer, FDP, INR, white blood cell count, platelet count, urea, serum creatinine, blood glucose, blood sodium, uric acid, myoglobin, and urine volume within the first 24 hours of injury (with Z values of 2.37, 5.49, 5.26, 5.97, 2.18, 1.95, 2.68, 2.68, 2.51, 2.82, 2.14, 3.40, 5.31, 3.41, 2.35, 3.81, 2.16, and -3.82, respectively, P<0.05); there were statistically significant differences between two groups of patients in whether conducted with mechanical ventilation and whether applied with vasoactive drugs (with χ2 values of 9.44 and 28.50, respectively, P<0.05). Age, total burn area, full-thickness burn area, serum creatinine within the first 24 hours of injury, and APTT within the first 24 hours of injury were the independent risk factors for the mortality within 28 days after injury in elderly patients with severe burns (with odds ratios of 1.17, 1.10, 1.10, 1.09, and 1.27, 95% confidence intervals of 1.03-1.40, 1.04-1.21, 1.05-1.19, 1.05-1.17, and 1.07-1.69, respectively, P<0.05). Conclusions:The elderly patients with severe burns had the injuries mainly from flame burns, often accompanied by moderate to severe inhalation injury and enhanced inflammatory response, elevated blood glucose levels, activated fibrinolysis, and impaired organ function in the early stage, which are associated with their prognosis. Age, total burn area, full-thickness burn area, and serum creatinine and APTT within the first 24 hours of injury are the independent risk factors for death within 28 days after injury in this population.
6.Effect of five-element music therapy combined with meridian-based acupoint massage timed according to qi circulationon on negative emotions and sleep quality in older adults with chronic heart failure
Xiangfeng SHEN ; Zhao XU ; Qi WU ; Guohua JI
Chinese Journal of Primary Medicine and Pharmacy 2024;31(4):510-515
Objective:To investigate the effect of five-element music therapy combined with meridian-based acupoint massage timed according to qi circulationon on negative emotions and sleep quality in older adults with chronic heart failure. Methods:A total of 112 older adult patients with chronic heart failure who received treatment at The Affiliated Hospital of Hangzhou Normal University between January 2022 and June 2023 were included in this study. They were randomly divided into a control group ( n = 56) and a study group ( n = 56) using the random number table method. Based on conventional treatment, the control group received five-element music therapy, while the intervention group underwent a combination of five-element music therapy and meridian-based acupoint massage timed according to qi circulation. Before and after the intervention, a comparison was made between the two groups in terms of the scores of the Hamilton Anxiety Scale (HAMA), Hamilton Depression Scale (HAMD), Pittsburgh Sleep Quality Index (PSQI), and various dimensions of the Minnesota Living with Heart Failure Questionnaire (MLHFQ). Additionally, the sleep outcome and patient satisfaction were also compared between the two groups. Results:After intervention, the scores of the HAMA and HAMD in the study group were (11.29 ± 2.48) points and (12.48 ± 3.36) points, respectively. In contrast, the control group had scores of (15.93 ± 3.35) points and (16.50 ± 4.32) points, respectively. After intervention, the scores of the HAMA and HAMD scales in both the study and control groups demonstrated a significant reduction in comparison with their respective pre-intervention scores [study group: (20.13 ± 5.18) points, (23.95 ± 8.97) points, control group: (19.36 ± 5.45) points, (23.79 ± 7.61) points, t = 15.35, 10.24, 5.65, 8.93, all P < 0.001). After intervention, the scores of the HAMA and HAMD scales in the study group were significantly lower than those in the control group ( t = -8.34, -5.49, both P < 0.001). After intervention, the scores of the PSQI in the study and control groups were (7.05 ± 0.96) points and (9.91 ± 1.28) points, respectively. After intervention, the scores of PSQI in both the study and control groups demonstrated a significant reduction compared with their respective pre-intervention scores [study group: (12.98 ± 2.21) points, control group: (12.50 ± 2.48) points, t = 24.68, 9.79, both P < 0.05]. After intervention, the score of the PSQI in the study group was significantly lower than that in the control group ( t = 13.34, P < 0.05). Based on the scores across various dimensions of the MLHFQ, it was observed that after intervention, the scores of emotional, physical, and other domains in both the study and control groups [study group: (9.36 ± 2.29) points, (16.95 ± 3.80) points, (18.50 ± 2.33) points; control group: (12.93 ± 2.00) points, (19.98 ± 3.98) points, (20.04 ± 2.24) points] decreased significantly compared with their pre-intervention scores [study group: (15.57 ± 1.55) points, (26.23 ± 4.63) points, (21.18 ± 2.50) points, control group: (16.09 ± 1.87) points, (25.32 ± 4.40) points, (21.57 ± 2.69) points, t = 21.66, 18.55, 8.44, 11.29, 11.73, 4.61, all P < 0.001]. After intervention, the scores of emotional, physical, and other domains in the study group were significantly lower than those in the control group ( t = -8.79, -4.13, -3.56, all P < 0.05). Patient satisfaction in the study group was superior to that that in the control group [98.21% (55/56) vs. 87.50% (49/56), χ2 = -3.09, P < 0.05]. Total effective rate of intervention on sleep in the study group was significantly higher than that in the control group [92.86% (52/56) vs. 78.57% (44/56), χ2 = -2.09, P < 0.05]. Conclusion:Five-element music therapy combined with meridian-based acupoint massage timed according to qi circulationon in the treatment of chronic heart failure in older adults can effectively alleviate negative emotions, improve the quality of life and sleep, and increase patient satisfaction with nursing care.
7.Current situation and influencing factors of post-doctoral training in medical colleges and universities in Liaoning
Journal of China Medical University 2024;53(8):752-758,762
Objective To analyze the current situation and factors influencing post-doctoral training in medical colleges and universities in Liaoning.Methods Convenience sampling was used to investigate 716 post-doctoral personnel at post-doctoral mobile stations of four medical colleges and universities in Liaoning.A cross-sectional study was conducted.A general information questionnaire,post-doctoral training questionnaire,interdisciplinary development questionnaire related to post-doctoral training,research burnout questionnaire,and postdoctoral research innovation ability questionnaire were distributed.A total of 780 copies were distributed and 716 copies were collected,with a response rate of 91%.A ttest or one-way ANOVA was used to compare the differences in post-doctoral training scores by age,sex,current status,and post-doctoral training type.Pearson's correlation analysis was used to analyze the scores for interdiscipli-nary development,research burnout,research innovation ability,and post-doctoral training in medical colleges.Indicators with statistical significance(P<0.05)in the single factor and correlation analyses were included in the multifactorial analysis of the factors influencing post-doctoral training.Results The score of post-doctoral training in medical colleges and universities in Liaoning(184.859±21.908)were at a high level.The results of the univariate analysis showed that the scores of post-doctoral training were statistically signifi-cant differences for the indicators of perceptions of post-doctoral status,reasons for joining the station,knowledge of post-doctoral training related policies,consistency of post-doctoral experience with initial expectations,satisfaction with post-doctoral work,and whether the research during the post-doctoral training had a disciplinary crossover nature(all P<0.05).The results of the correlation analysis showed that the interdisciplinary development scores,research burnout score,and research innovation ability score were positively correlated with post-doctoral training scores(all P<0.001).The results of the multifactorial analysis showed that consistency between experience and expectations(i.e.,relatively consistent,average,not very consistent,not consistent at all),job satisfaction(i.e.,unchanged,slightly improved,significantly improved),knowledge of relevant policies(no knowledge at all),interdisciplinary development,and research burnout were influential factors for post-doctoral training(all P<0.05).Conclusion The management of post-doctoral training in medi-cal colleges and universities in Liaoning is moderately high level,but there are still some problems.Relevant management methods and strategies should be established to alleviate post-doctoral research burnout,improve the level of cross-disciplinary development,and pro-mote the cultivation of research and innovation abilities to strengthen the cultivation of a first-class medical talent team.
8.Clinical pharmacist participated in the treatment and analysis of a patient with Mycobacterium abscessus infection after the resection of sebaceous gland cyst
Sufang YANG ; Guohua LIU ; Chengli WU ; Hailang WANG ; Xuezhen HE
Chinese Journal of Pharmacoepidemiology 2024;33(10):1164-1169
A 26-year-old female patient was admitted to the hospital with recurrent infection of the incision after resection of a back sebaceous cyst,and the pus culture showed Mycobacterium abscessus.Clinical pharmacists reviewed relevant guidelines and literature,analyzed and summarized drug selection,drug resistance,adverse drug reactions and coping strategies,sequential treatment plans and treatment courses,and assist physicians in formulating individualised anti-infective treatment plans.Initially imipenem,amikacin and azithromycin were given according to bacterial culture results.Secondly,according to the results of drug sensitivity,they were changed to tigecycline,amikacin and clarithromycin.Finally,due to the adverse drug reaction of tigecycline and the recurrence of sinus in the patient,and considering the possibility of imipenem and clarithromycin resistance,the anti-infection regimen was adjusted in time to cefoxitin,amikacin and azithromycin.During treatment,the clinical pharmacist monitors drug effectiveness and adverse reactions,combining pharmacy expertise with clinical practice.After the treatment,the patient improved and was discharged.After discharge,azithromycin and omacycline were successively given to continue anti-infection treatment,and the incision on the patient's back basically healed through follow-up.Clinical pharmacist involvement in Mycobacterium abscessus anti-infective drug selection can provide individualised drug regimens for patients,ensure the safety and effectiveness of medication for patients,and provide references for the treatment and management of similar patients.
9.Predictive value of spectral CTA parameters for infarct core in acute ischemic stroke
Yan GU ; Dai SHI ; Yeqing WANG ; Dandan XU ; Aoqi XIAO ; Dan JIN ; Kuan LU ; Wu CAI ; Guohua FAN ; Junkang SHEN ; Liang XU
Chinese Journal of Emergency Medicine 2024;33(11):1572-1579
Objective:To investigate the value of dual-detector spectral CTA in distinguishing infarct core from penumbra in patients with acute ischemic stroke(AIS), and to further explore the risk factors associated with infarct core and their predictive value.Methods:The imaging and clinical data of 163 patients with AIS who met the inclusion criteria admitted to the Second Affiliated Hospital of Soochow University from March 2022 to May 2023 were retrospectively analyzed. Patients from March 2022 to December 2022 were used as the training group, and patients from January 2023 to May 2023 were used as the validation group for internal validation. The head and neck spectral CTA and brain CT perfusion imaging with dual-layer detector spectral CT were all carried out on all patients. Using CTP as reference, the patients were divided into infarct core group and non-infarct core group according to whether an infarct core occurred in the hypoperfusion regions of brain tissue. Multivariate logistic regression analysis was used to screen predictors related to the infarct core. The receiver operating characteristic (ROC) curve was used to evaluate the predictive efficacy.Results:A total of 163 patients were included in the study, including 112 in the training group and 51 in the validation group. There were significant differences in iodine density, effective atomic number, hypertension, triglyceride and neutrophils between the two groups ( P< 0.05). The cutoff values for iodine density values and effective atomic number values were 0.215 mg/mL and 7.405, respectively. Multivariate logistic regression analysis showed that iodine density and hypertension were independent risk factors for infarct core in AIS, and triglyceride was an independent protective factor. The area under the ROC curve (AUC) of iodine density value was the largest (0.859), with a sensitivity of 70.27%, and a specificity of 90.67%, which had a good predictive value. The ROC curve analysis results for the validation group were consistent with the training group. Conclusions:Spectral CT parameters iodine density values and effective atomic number values have the potential to distinguish the infarct core area from the penumbra area in patients with AIS. Iodine density and hypertension were independent risk factors of infarct core in AIS, triglyceride was an independent protective factor, and iodine density values obtained by dual-layer spectral detector CT had a high predictive value.
10.Long-term outcome of patients with rectal cancer who achieve complete or near complete clinical responses after neoadjuvant therapy: a multicenter registry study of data from the Chinese Watch and Wait Database
Yiming ZHAO ; Weihu WANG ; Wei ZHANG ; Lin WANG ; Shuai LI ; Jingwen WANG ; Leen LIAO ; Guanyu YU ; Zhen SUN ; Yanli QU ; Yang GONG ; Yun LU ; Tao WU ; Yunfeng LI ; Quan WANG ; Guohua ZHAO ; Yi XIAO ; Peirong DING ; Zhen ZHANG ; Aiwen WU
Chinese Journal of Gastrointestinal Surgery 2024;27(4):372-382
Objective:To report the long-term outcomes of Chinese rectal cancer patients after adopting a Watch and Wait (W&W) strategy following neoadjuvant therapy (NAT).Methods:This multicenter, cross-sectional study was based on real-world data. The study cohort comprised rectal cancer patients who had achieved complete or near complete clinical responses (cCRs, near-cCRs) after NAT and were thereafter managed by a W&W approach, as well as a few patients who had achieved good responses after NAT and had then undergone local excision for confirmation of pathological complete response. All participants had been followed up for ≥2 years. Patients with distant metastases at baseline or who opted for observation while living with the tumor were excluded. Data of eligible patients were retrospectively collected from the Chinese Wait-and-Watch Data Collaboration Group database. These included baseline characteristics, type of NAT, pre-treatment imaging results, evaluation of post-NAT efficacy, salvage measures, and treatment outcomes. We herein report the long-term outcomes of Chinese rectal cancer patients after NAT and W&W and the differences between the cCR and near-cCR groups.Results:Clinical data of 318 rectal cancer patients who had undergone W&W for over 2 years and been followed up were collected from eight medical centers (Peking University Cancer Hospital, Fudan University Shanghai Cancer Center, Sun Yat-sen University Cancer Center, Shanghai Changhai Hospital, Peking Union Medical College Hospital, Liaoning Cancer Hospital, the First Hospital of Jilin University, and Yunnan Cancer Hospital.) The participants comprised 221 men (69.4%) and 107 women (30.6%) of median age 60 (26-86) years. The median distance between tumor and anal verge was 3.4 (0-10.4) cm. Of these patients, 291 and 27 had achieved cCR or near-cCR, respectively, after NAT. The median duration of follow-up was 48.4 (10.2-110.3) months. The 5-year cumulative overall survival rate was 92.4% (95%CI: 86.8%-95.7%), 5-year cumulative disease-specific survival (CSS) rate 96.6% (95%CI: 92.2%-98.5%), 5-year cumulative organ-preserving disease-free survival rate 86.6% (95%CI: 81.0%-90.7%), and 5-year organ preservation rate 85.3% (95%CI: 80.3%-89.1%). The overall 5-year local recurrence and distant metastasis rates were 18.5% (95%CI: 14.9%-20.8%) and 8.2% (95%CI: 5.4%-12.5%), respectively. Most local recurrences (82.1%, 46/56) occurred within 2 years, and 91.0% (51/56) occurred within 3 years, the median time to recurrence being 11.7 (2.5-66.6) months. Most (91.1%, 51/56) local recurrences occurred within the intestinal lumen. Distant metastases developed in 23 patients; 60.9% (14/23) occurred within 2 years and 73.9% (17/23) within 3 years, the median time to distant metastasis being 21.9 (2.6-90.3) months. Common sites included lung (15/23, 65.2%), liver (6/23, 26.1%), and bone (7/23, 30.4%) The metastases involved single organs in 17 patients and multiple organs in six. There were no significant differences in overall, cumulative disease-specific, or organ-preserving disease-free survival or rate of metastases between the two groups (all P>0.05). The 5-year local recurrence rate was higher in the near-cCR than in the cCR group (41.6% vs. 16.4%, P<0.01), with a lower organ preservation rate (69.2% vs. 88.0%, P<0.001). The success rates of salvage after local recurrence and distant metastasis were 82.1% (46/56) and 13.0% (3/23), respectively. Conclusion:Rectal cancer patients who achieve cCR or near-cCR after NAT and undergo W&W have favorable oncological outcomes and a high rate of organ preservation. Local recurrence and distant metastasis during W&W follow certain patterns, with a relatively high salvage rate for local recurrence. Our findings highlight the importance of close follow-up and timely intervention during the W&W process.

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