Objective To explore risk factors for metachronous tumor lesions after radical resection of rectal cancer (RC). Methods A retrospective study was conducted on 757 RC patients who underwent RC radical surgery at the Sixth Affiliated Hospital, Sun Yat-sen University from October 2012 to June 2018. The patients were divided into early-onset RC group (EO-RC group, ＜50 years old, n=228) and average-onset RC group (AO-RC group, ≥ 50 years old, n=529) based on their age of diagnosis, and were followed up until March 2025. General information, initial colonoscopy, follow-up colonoscopy, and other relevant clinical information were collected from all patients. The risk of developing metachronous tumor lesions was compared between two groups using Kaplan Meier (K-M) risk function; univariate and multivariate Cox proportional hazards models were used to analyze the influencing factors of metachronous tumor lesions after RC radical surgery. Results The median follow-up time was 30 (15, 58) months. The K-M risk function showed that the risk of developing metachronous tumor lesions in the EO-RC group was significantly lower than that in the AO-RC group (P＜0.001). The results of the multivariate Cox proportional hazards model showed that the risk of metachronous tumor lesions after RC surgery in the EO-RC group was 50.8% of that in the AO-RC group (P＜0.001); PIK3CA mutation and synchronous advanced adenoma were independent risk factors for metachronous tumor lesions after RC surgery (HR=2.360, 2.094; P=0.003, P＜0.001). Conclusions RC patients with advanced age, PIK3CA mutations, and synchronous advanced adenomas are prone to developing metachronous tumor lesions after surgery. Patients with EO-RC may not require intensified colonoscopy surveillance postoperatively. However, intensified surveillance strategies should be considered for RC patients harboring PIK3CA mutations or presenting with synchronous advanced adenomas.

Primary liver cancer is one of the most common causes of cancer-related deaths in China,with hepatocellular carcinoma(HCC)accounting for 75%-85%.Approximately 70%of HCC patients are in the advanced stage at the time of diagnosis and miss the opportunity for radical surgery,leading to a poor prognosis.Yttrium-90 microsphere selective internal radiation therapy(90Y-SIRT),an emerging therapeutic modality,delivers radioactive microspheres via the hepatic artery to target tumors and uses beta radiation for localized tumor ablation.Compared to conventional transarterial chemoembolization and pharmacotherapy,90Y-SIRT shows the advan-tages of significant clinical benefits,good safety profiles,and broad applicability across diverse patient populations.This article re-views the advances in the application of 90Y-SIRT in HCC treatment.

Primary liver cancer is a malignant tumor with high incidence and mortality rates worldwide,and the early diagnosis of pri-mary liver cancer and the optimization of precise treatment strategies have become critical issues in the healthcare field.Due to the in-sufficient capabilities for molecular characterization,it is increasingly difficult for traditional imaging techniques to meet clinical needs in the era of precision medicine.Multimodal molecular imaging technology integrates the advantages of imaging modalities such as ul-trasound imaging,magnetic resonance imaging,and optical imaging,thereby achieving synergistic enhancement between molecular bio-logical information of liver cancer and precise anatomical localization and demonstrating a significant value in the diagnosis and treat-ment of liver cancer.This article reviews the advances in the application of multimodal molecular imaging in the early diagnosis,pre-cise treatment,and therapeutic efficacy monitoring of liver cancer.

Abdominal aortic balloon occlusion is an emerging interventional treatment method,which has been used to control the risk of postpartum hemorrhage caused by pernicious placenta previa(PPP).Numerous studies have shown that abdominal aortic balloon occlusion can not only significantly reduce the difficulty and risk of surgery,shorten the time spent for surgery,but also further increase the success rate of surgery,which undoubtedly has a positive impact on both the delivery woman and neonate.This paper aims to make a brief introduction of the development history of abdominal aortic balloon occlusion and its technical principles,and to expound the timing of using abdominal aortic balloon occlusion and the clinical application of the balloon with different properties,focusing on the advantages of using abdominal aortic balloon in patients with PPP.It is expected that this paper can provide a reference for formulating clinical treatment strategies.

Early rectal cancer is defined as any size of rectal epithelial tumor with infiltration depth limited to the mucosa and submucosa,regardless of with or without lymph node metastasis.Local resection is one of the main treatment methods for early rectal cancer without local lymph node metastasis.The development of endoscopic mucosal resection(EMR),endoscopic submucosal dissection(ESD),transanal endoscopic microsurgery(TEM),and transanal minimally invasive surgery(TAMIS)has brought more options for the treatment of early rectal cancer.About 8%-12%of early rectal cancer patients have local lymph node metastasis and therefore still require total mesorectal excision(TME).The current guidelines recommend that early rectal cancer with high-risk pathological features requires additional salvage radical surgery.Various minimally invasive and anal sphincter-preserving surgical techniques,such as natural orifice specimen extraction surgery(NOSES),transanal total mesorectal excision(TaTME),intersphincteric resection(ISR),and conformal sphincter-preserving operation(CSPO),have better achieved the goal of anal sphincter preservation and anal function preservation.The overall prognosis of early rectal cancer is good,but full-process surveillance is equally important.With the innovation of early diagnosis,early treatment and full-process surveillance,the development of endoscopic and surgical techniques will further improve the standardization of diagnosis and treatment for early rectal cancer.

Objective:To understand the mental health status of pregnant women in the third trimester of pregnancy, and explore the influencing factors.Methods:The general demographic information and pregnancy information of 575 pregnant women in the Chinese Pregnant Women Cohort Study were collected. The mental health status of pregnant women in the third trimester was investigated by using Edinburgh Postpartum Depression Scale, Self-Rating Anxiety Scale and University of California at Los Angeles. Multivariate unconditional logistic regression was used to analyze the influencing factors for mental health of pregnant women.Results:In the third trimester of pregnancy, the incidence of depression was 16.52%, the incidence of anxiety was 11.13%, and the incidence of feeling loneliness was 26.26%. Logistic regression analysis showed that compared with those with education level of junior high school below, those with education level of college or bachelor's degree ( OR=0.418, 95% CI: 0.184-0.950) and master's degree or above ( OR=0.116, 95% CI: 0.027-0.503) were less likely to feel loneliness. Pregnant women with higher annual family income (10 000 RMB yuan) were less likely to suffer from depression (≥20 vs. <10: OR=0.527, 95% CI: 0.279-0.998), anxiety (10-20 vs. <10: OR=0.363, 95% CI: 0.180-0.731; ≥20 vs. <10: OR=0.271, 95% CI: 0.132-0.554) and feeling loneliness (≥20 vs. <10: OR=0.477, 95% CI: 0.276-0.826). Conclusions:The education level and family income have impacts on the mental health status of pregnant women in the third trimester. Medical staff should give targeted psychological advice to pregnant women to improve their mental health status.

Objective To understand the status of economic burden of maternal health care of pregnant women in China, and to discuss the equity and accessibility of maternal health care during pregnancy among different regions and populations. Methods A total of 9 193 women during early pregnancy were recruited from the Chinese Pregnant Women Cohort Study between July 25, 2017 and November 26, 2018. Information on general condition and economic burden of maternal health care was surveyed. SPSS 25.0 software was used for statistical analysis. Results The median direct medical cost of maternity check-ups for pregnant women was 400 CNY per visit, and the median cost of lost work was 360 CNY per visit. The analysis of the results showed that the median medical expense was highest in pre-pregnant women with BMI <18.5kg/m² (P=0.008). The median medical expense was higher in urban residents than rural residents (P<0.001). Families with fewer members had higher direct medical expenses (P<0.001, P_trend=0.003). The higher the socioeconomic status was, the higher the direct medical expense was (P<0.001, P_trend=0.003). The cost of lost work was lower in pregnant women with higher socioeconomic status (P=0.025, P_trend=0.017). In addition, the medical expense was highest in women living in the eastern part of China (P<0.001). The direct medical expenses (P=0.002) and lost-time expenses of pregnant women in the North were higher than those in the South (P=0.013). Conclusion The problem of equity and accessibility of maternal health care still existed. It is recommended that relevant departments further improve maternal health care services and build a diversified healthcare service system to ensure maternal and child health and promote eugenics.

Objective To analyze the prevalence of depression in early pregnancy, explore its possible influencing factors, and provide reference for mental health care during pregnancy. Methods A baseline survey of 9 193 early pregnant women recruited by the Chinese Pregnant Women Cohort Study (CPWCS) program was conducted. Edinburgh Postnatal Depression Scale was used to assess the depression symptoms in early pregnancy. The χ² test and multivariable logistic regression were used to analyze the influencing factors. Results The rate of depression in early pregnant women in CPWCS was 46.50%. Multivariate analysis showed that unplanned pregnancy (OR=1.23, 95%CI: 1.12~1.35, P<0.001), passive smoking (OR=1.28, 95%CI: 1.18~1.39, P<0.001), drinking (OR=1.35, 95%CI: 1.12~1.63, P=0.002) and consumption of carbonated or sugary beverages （OR=0.80, 95%CI: 0.73~0.88, P<0.001） were risk factors for depression during early pregnancy, while enough sleep (OR=0.71, 95%CI: 0.57~0.88, P=0.002), moderate-high level of physical activity (OR=0.87, 95%CI: 0.78~0.98, P=0.023), healthy intake of vegetables and fruits（OR=0.60, 95%CI: 0.51~0.70, P<0.001), animal foods（OR=0.82, 95%CI: 0.74~0.91, P<0.001） and milk and dairy products（OR=0.81, 95%CI: 0.72~0.90, P<0.001）were protective factors. Conclusion The rate of depression was high and it was affected by many factors. It is necessary to pay more attention to depression symptoms during early pregnancy and carry out targeted psychological health care during pregnancy.

Under the limitation of cross-sectional studies, more researchers are turning their attention to maternal and child cohort studies. However, some problems do exist in the traditional maternal and child cohort studies, if data is only gathered from the hospitals. The limitation would include the contents of research and the high rate of loss to follow-up. With the integration of different medical traits and the progress in big data, the development of maternal and child related cohorts, with characteristics of dynamic follow-up and data sharing, through combining the information and health service systems of different institutions, seem in urgent need. This paper aims to provide some basic achievements in conducting maternal and child cohorts that can serve the related health problems through full-life cycle, and provide new references on conducting cohort studies, aiming at special population or diseases.

Objective:To investigate sleep quality in pregnant women during their first and second trimester and to identify risk factors.Methods:Data was from the Chinese Pregnant Women Cohort Study. A total of 3 618 pregnant women were included, with the exclusion 346 women who had missing information. Sociodemographic, health-related behavior, depression and sleep quality information were collected and analyzed. Logistic regression analysis were used to explore the influencing factors of sleep quality in pregnant women.Results:Among the 3 618 pregnant woman 28.2% had poor sleep quality in their first trimester and 28.7% in the second trimester. 15.2% pregnant women had progressively worse sleep and 13.0% had persistently poor sleep had pregnant women were generally suffered from poor sleep quality, difficulty falling asleep, sleep disorders and daily fatigue. Regular diet ( OR=0.75, 95% CI: 0.62-0.92) and work ( OR=0.84,95% CI: 0.71-0.99) in the first trimester were protective factors of sleep quality in pregnant women. Age ≥30 year old ( OR=1.19, 95% CI: 1.03-1.37), passive smoking ( OR=1.18, 95% CI: 1.02-1.36) and depression ( OR=2.25, 95% CI: 1.95-2.61) in the first trimester were risk factors. Conclusions:The rate of poor sleep quality are high among Chinese pregnant woman during their first and second trimester. The risk factors of sleep quality are multiple. Regular diet and work, reduction of tobacco exposure, alleviation of depression symptom may help improve sleep quality among pregnant women.