Objective:To summarize the clinical characteristics of congenital chylothorax (CC) in neonates, and to analyze the effects of conservative treatment and the prognosis.Methods:A case control study was conducted.Clinical data of neonates with CC treated in the Department of Neonatal Surgical Intensive Care Unit, Guangzhou Women and Children′s Medical Center Guangzhou Medical University, from January 2015 to April 2023 were collected.The patients were divided into a survival group and a death group according to the outcome.SPSS 26.0 software was used for statistical analysis, and binary Logistic regression was used for the analysis of risk factors for death.Results:A total of 55 patients were included in this study, including 35 males and 20 females.The gestational age at birth and birth weight were 37.1 (34.7, 38.7) weeks and 3 250 (2 640, 3 540) g, respectively.Among the patients included, 30 cases had bilateral pleural effusion, 25 cases had unilateral pleural effusion, and 22 cases had hydrops fetalis; 50 cases were prenatally diagnosed with pleural effusion, with the mean gestational age at diagnosis being 31.0(26.0, 34.6) weeks.Additionally, 21 cases had polyhydramnios, and 18 cases had mediastinal displacement.Ten cases received intrauterine treatment and 17 cases were treated with octreotide.The maximum daily amount of pleural effusion was 31.7(12.0, 62.5) mL/kg, and pleural effusion resolved within 14 (6, 22) days.The length of hospital stay was 23 (12, 36) days.Forty-four cases survived, while 11 cases died.The differences in polyhydramnios, gestational age, bilateral pleural effusion, hydrops fetalis and Apgar score were significant between the survival and death groups (all P<0.05).Binary Logistic regression analysis revealed that bilateral pleural effusion and a low 5-minute Apgar score were independent risk factors for early death in neonates with CC (all P<0.05).A total of 38 children were followed up at the age of 2.30 (1.24, 3.46) years.There was 1 case of recurrence, and none of the patients experienced recurrent respiratory infections. Conclusions:CC is most common in full-term infants and has a predominantly bilateral effusion, its long-term prognosis with conservative treatment is promising.However, neonates with CC who present with bilateral pleural effusion or low 5-minute Apgar scores have an increased risk of early mortality.

Objective:To summarize the clinical characteristics of congenital chylothorax (CC) in neonates, and to analyze the effects of conservative treatment and the prognosis.Methods:A case control study was conducted.Clinical data of neonates with CC treated in the Department of Neonatal Surgical Intensive Care Unit, Guangzhou Women and Children′s Medical Center Guangzhou Medical University, from January 2015 to April 2023 were collected.The patients were divided into a survival group and a death group according to the outcome.SPSS 26.0 software was used for statistical analysis, and binary Logistic regression was used for the analysis of risk factors for death.Results:A total of 55 patients were included in this study, including 35 males and 20 females.The gestational age at birth and birth weight were 37.1 (34.7, 38.7) weeks and 3 250 (2 640, 3 540) g, respectively.Among the patients included, 30 cases had bilateral pleural effusion, 25 cases had unilateral pleural effusion, and 22 cases had hydrops fetalis; 50 cases were prenatally diagnosed with pleural effusion, with the mean gestational age at diagnosis being 31.0(26.0, 34.6) weeks.Additionally, 21 cases had polyhydramnios, and 18 cases had mediastinal displacement.Ten cases received intrauterine treatment and 17 cases were treated with octreotide.The maximum daily amount of pleural effusion was 31.7(12.0, 62.5) mL/kg, and pleural effusion resolved within 14 (6, 22) days.The length of hospital stay was 23 (12, 36) days.Forty-four cases survived, while 11 cases died.The differences in polyhydramnios, gestational age, bilateral pleural effusion, hydrops fetalis and Apgar score were significant between the survival and death groups (all P<0.05).Binary Logistic regression analysis revealed that bilateral pleural effusion and a low 5-minute Apgar score were independent risk factors for early death in neonates with CC (all P<0.05).A total of 38 children were followed up at the age of 2.30 (1.24, 3.46) years.There was 1 case of recurrence, and none of the patients experienced recurrent respiratory infections. Conclusions:CC is most common in full-term infants and has a predominantly bilateral effusion, its long-term prognosis with conservative treatment is promising.However, neonates with CC who present with bilateral pleural effusion or low 5-minute Apgar scores have an increased risk of early mortality.

Objective To retrospectively investigate and analyze the specially permitted aeromedical evaluation results of overage military flying personnel,in order to provide references for health management and related evaluation methods improvement.Methods The clinical data and evaluation results of overage flying personnel were collected from 2012 to 2023.Disease spectrum was analyzed,and qualified rates among different airplane types and aviation duties were compared.Results 79.57%of the 509 flying personnel were detected with diseases,and the top ten were hyperlipidemia,fatty liver,thyroid nodule,renal cyst,hepatic cyst,gallbladder polyps,hyperuricemia,carotid artery arteriosclerosis,hypertension and hepatic hemangioma.96.08%of the personnel were qualified to continue flying,1.96%were disqualified and 1.96%were temporarily disqualified.The qualified rates among different airplane types and aviation duties were not significantly different(P?>?0.05).Conclusion Overage military flying personnel could apply for specially permitted aeromedical evaluation to extend their flying lifespan.Attention should be paid to metabolic and cardiovascular diseases in aeromedical support and evaluation for these experienced flying personnel.

Objective:To explore the construction and application methods of multicenter bone tumor-specific database.Methods:Experts from multiple centers including Shanghai General Hospital, Shanghai Changzheng Hospital, Zhongshan Hospital, Shanghai Sixth People's Hospital, Ruijin Hospital, Fudan University Shanghai Cancer Center and Shanghai Ninth People's Hospital established a standard dataset for bone tumors through research and discussion. Clinical data will be automatically collected and standardized according to standard fields. A database will be built and a users' interface will be developed to ensure secure data storage, while providing services such as exporting raw data, visualizing statistical analysis, establishing clinical queue research projects, et al. Finally, the bone tumor database will be shared by integrating with the Shenkang's Big Data Platform to achieve multi-center data integration.Results:A standard data set for bone tumors containing 603 fields has been established and published. An automated data collection system for bone tumors has been established, including complete data collection, data collation and visualization functions. The data categories include modules such as patients' electronic case information, laboratory information on blood routine, biochemistry and tumor markers, imaging information, surgery information, pathology information and radiotherapy records. Personal information such as patients' names and ID numbers are desensitized and encrypted and can be exported for further research. From 2015 to 2023, the total number of bone tumor cases collected in the database was 10,789. From 2015 to 2019, 112 cases of the osteosarcoma cohort were retrospectively analyzed for admission, with a statistical 5-year survival rate of 68%.Conclusion:A regional bone tumor specialty big data network and data sharing platform has been established, along with data sharing mechanisms and standards including data standards, security standards, and quality evaluation standards. This provides data and efficient new solutions for the construction of China's bone tumor database, as well as a research and development platform for standardized diagnosis and treatment of bone tumors and new technologies.

Objective:To investigate the clinical features and outcomes of giant fetal hepatic hemangioma (GFHH).Methods:In this retrospective study, patients with GFHH from Guangzhou Women and Children's Medical Centre who received conservative management or medical intervention with a minimum of one year's follow-up after birth from August 2012 until March 2020 were enrolled. Prenatal and postnatal data were collected to analyze the pathological (size, location, and lesion type) and clinical manifestations, treatment, and prognosis of GFHH using independent sample t-test or Chi-square (or Fisher's exact) test. Results:(1) A total of 22 subjects were enrolled, including one preterm infant (4.5%), with an average gestational age of (38.9±1.5) weeks at birth, ranging from 33 +4 to 40 +3 weeks. Among them, 17 were male (77.3%), and five were female (22.7%). The gestational age at the first diagnosis was (35.0±2.8) weeks, ranging from 30 to 40 +1 weeks. Fifteen babies (68.2%) were born vaginally and seven (31.8%) by cesarean section due to fetal distress. Focal type accounted for 21 of the 22 (95.5%) patients, and multifocal type in one patient (4.5%). All the patients received B-ultrasonography on an average of 2.5 times (2-4 times) prenatally, which showed that the diameter of hepatic hemangioma increased with gestational age and reached its maximum at birth [56 mm (42-99 mm)]. Nine fetuses (40.9%) were diagnosed with GFHH with prenatal ultrasonography, and 12 with MRI. Among them, six fetuses were diagnosed with both ultrasonography and MRI. The other cases showed space-occupying lesions. (2) Ten babies received conservative management (conservative group), and 12 received drug therapy (treatment group). There was no significant difference between the two groups in gestational age at diagnosis or birth, birth weight, the maximum diameter of the tumor before birth, and location and classification of the lesions (all P>0.05). The incidence of thrombocytopenia in the treatment group was significantly lower than that in the conservative group (7/12 vs 0/10, Fisher's exact test, P=0.014). No abnormality of heart function or pulmonary hypertension was found in the conservative group, while two patients were complicated with pulmonary hypertension in the treatment group. The outcomes between the two groups were similar ( P>0.05). (3) During a median followed-up of 3.3 years (1.2-7.0 years), all patients survived, and none of the children in the conservative group received drug therapy. One of the ten patients in the conservative group had a complete tumor involution at two years old without recurrence, and the other nine had the tumor regressed in size. Besides oral propranolol, three of 12 cases in the treatment group also had dexamethasone at the early stage, two had rapamycin, and two received invasive therapy due to progressive enlargement of lesions at the early stage, with the lesions completely involuted in two cases at 1.7 and 5.5 years of age and regressed in the other ten cases. Conclusions:The diameter of GFHH increases with gestational age. Conservative management conservative is recommended for asymptomatic GFHH cases. For those affected with dyspnea and abdominal distention resulting in repeated vomiting, drugs therapy can be considered regardless of the test results, and invasive therapy is an option when drugs are ineffective. Some fetuses may have unsignificant imaging manifestations. Most children prenatally detected with giant hepatic hemangiomas can survive, and the tumor begins to regress after birth with a good long-term prognosis.

Objective:To study the characteristics and related factors of neonatal intestinal necrosis caused by midgut volvulus.Methods:We retrospectively analyzed the clinical data of neonates with midgut volvulus who were admitted to Guangzhou Women and Children's Medical Center, from January 2009 to December 2019 and confirmed by surgery. The cases with intestinal necrosis belong to the intestinal necrosis group, and those without intestinal necrosis, the non-intestinal necrosis group which was randomly sampled at a ratio of about 4∶1 to the number of cases in the intestinal necrosis group. The two groups were compared in terms of personal history, age of onset, initial symptoms, vital signs within 2 h after admission, time from symptom onset to operation, clinical outcome, laboratory indicators within 2 h after admission, etc. Multivariate Logistic regression analysis was used to screen the related factors of intestinal necrosis in midgut volvulus. The effective warning indexes are screened by receiver operating characteristic (ROC) curve.Results:(1) Among 231 cases of midgut volvulus, 21 cases (9.1%, 21/231) had intestinal necrosis at the time of operation, 87 cases were included in the non-intestinal necrosis group. (2) The levels of heart rate within 2 h after admission, mean arterial pressure, WBC, C reactive protein (CRP), blood glucose and potassium in intestinal necrosis group were significantly higher than those in non-intestinal necrosis group ( P<0.05). Admission days of age, hemoglobin, serum albumin, serum sodium, pH and BE levels were significantly lower than those in the group without intestinal necrosis ( P<0.05). (3) In the multivariate analysis, increased heart rate, mean arterial pressure, serum CRP, and decreased serum sodium, serum albumin, and pH levels were predictors related to intestinal necrosis in patients with midgut volvulus. (4) The area under the ROC curve (AUC) of CRP was 0.883, the cutoff value was 9.88 mg/L, the sensitivity was 76.2%, and the specificity was 94.3%. The ROC curve of serum albumin was 0.792, the cut-off value was 36.65 g/L, the sensitivity was 70.1%, and the specificity was 94.3%. Conclusions:Heart rate, mean arterial pressure, increased CRP, decreased serum sodium, serum albumin and pH are helpful to predict whether intestinal necrosis occurs in midgut volvulus, and CRP > 9.88 mg/L and serum albumin < 36.65 g/L are likely warning indicators.

Objective:To evaluate the clinical effect of applying the programmed management procedure in the prenatal diagnosis of pyriform sinus fistula(PSF).Methods:This study retrospectively enrolled eight fetuses with PSF who were managed according to the programmed management procedure for prenatal diagnosis of PSF, which was established in January 2016, in Guangzhou Women's and Children's Medical Center from January 2016 to October 2020. The procedure consisted of the detection of fetal neck cysts by prenatal ultrasound followed by further confirmation by MRI, evaluation of the degree of airway compression, indwelling gastric tube after birth, no oral feeding, complement of CT/MRI, and surgical treatment within a limited time after necessary preoperative examination. The prenatal diagnosis, postnatal treatment, and follow-up were summarized using descriptive analysis.Results:(1) Prenatal: The gestational age at the first detection of cervical cysts by prenatal ultrasound was (27.1±4.1) weeks and all the cysts were located on the left side. Prenatal MRI indicated that the largest cysts was (32.0±12.2) mm in diameter, and the tracheal transit index was (10.9±2.8) mm. (2) After birth: Among the eight children, five were males and three were females, with the gestational age of (38.0±0.9) weeks and birth weight of (3 020±459) g. One case was intubated during labor due to a intrauterine tracheal transposition index of 17.4 mm. All infants were not allowed for oral feeding. The median age at CT/MRI examination was 2.5 d (1-8 d), which revealed that the maximum diameter of the cysts was (40.6±6.9) mm and visible air bubbles in all cysts. The infection index before operation was not high and the age at operation was (8.6±2.3) d. All cysts were completely removed and the PSFs were ligated at a higher position, with the average operative duration of (95.0±19.6) min, and the postoperative duration of mechanical ventilation and hospitalization of 5 h (3-71 h) and (8.8±1.0) d, respectively. No complications such as hoarseness were reported. During the follow-up of 4 to 58 months through outpatient clinic and telephone, no recurrence were observed.Conclusions:The programmed management procedure can provide guidance for postnatal treatment of patients with a prenatal diagnosis of PSF, and help to achieve a successful treatment result.

Hypertension is a prevalent systemic disease in the elderly, who can suffer from several pathological skeletal conditions simultaneously, including osteoporosis. Benidipine (BD), which is widely used to treat hypertension, has been proved to have a beneficial effect on bone metabolism. In order to confirm the osteogenic effects of BD, we investigated its osteogenic function using mouse MC3T3-E1 preosteoblast cells in vitro. The proliferative ability of MC3T3-E1 cells was significantly associated with the concentration of BD, as measured by methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay and cell cycle assay. With BD treatment, the osteogenic differentiation and maturation of MC3T3-E1 cells were increased, as established by the alkaline phosphatase (ALP) activity test, matrix mineralized nodules formation, osteogenic genetic test, and protein expression analyses. Moreover, our data showed that the BMP2/Smad pathway could be the partial mechanism for the promotion of osteogenesis by BD, while BD might suppress the possible function of osteoclasts through the OPG/RANKL/RANK (receptor activator of nuclear factor-κB (NF-κB)) pathway. The hypothesis that BD bears a considerable potential in further research on its dual therapeutic effect on hypertensive patients with poor skeletal conditions was proved within the limitations of the present study.

Objective:To study the incidences of postoperative complications and nutritional status following different timings of stoma reversal in necrotizing enterocolitis (NEC).Method:From January 2017 to December 2019, NEC patients receiving enterostomy surgery and later stoma reversal in our hospital were retrospectively analyzed. They were assigned into three groups according to the timing of stoma reversal: early group (reversal within 8 weeks of stoma formation), middle group (reversal at 8~12 weeks from stoma formation) and late group (reversal after 12 weeks from stoma formation). Weight-for-age-Z-score (WAZ) was used to evaluate nutritional status.Result:A total of 56 infants were enrolled, including 6 cases in the early group, 11 cases in the middle group, and 39 cases in the late group. The gestational age and birth weight were (33.4±3.4) weeks and (1 894±640) g, respectively. The median age of stoma formation and the interval between stoma formation and reversal were 16.5 (8.0, 28.2) days and 94.0 (76.5, 126.5) days. No significant differences existed on gestational age, birth weight, age of stoma formation and complications of stoma reversal among the three groups ( P>0.05). The incidence of growth retardation (WAZ<-2) was 14.3% at stoma formation, and significantly increased to 62.5% at stoma reversal ( P<0.05). The WAZ at stoma reversal in early, middle and late groups were (-3.2±1.9), (-3.0±1.6) and (-2.3±1.5), without significant differences( P>0.05). The WAZ gradually increased to (-0.7±1.2), (-0.1±2.0) and (-0.1±0.8) at 42~48 weeks after reversal, respectively. Conclusion:The timing of stoma reversal may not influence the complications of reversal. Growth retardation are common in NEC infants with stoma formation and stoma reversal may improve the nutritional status of the infants. Early reversal of stoma is suggested to improve the nutritional status of patients with poor weight gain after stoma formation.

Objective:To explore the relationship between the exercise of cervical and lumbar muscles of military flying personnel and the prevalence of cervical and lumbar spine diseases, and to verify the protective effect of the exercise of cervical and lumbar muscles on cervical and lumbar of flying personnel.Methods:A self-made questionnaire and cluster sampling method were used. Air Force pilots of different aircraft types were selected to survey the situation of physical exercise and the prevalence of cervical and lumbar diseases by a questionnaire. Pilots were grouped by if stretching before flight, if relaxing after flight, and if regularly exercising on the strength of cervical and lumbar muscles. The prevalence of the cervical and lumbar diseases was compared. Influence factors were searched by Logistic regression analysis to investigate the protective effect of cervical and lumbar muscle exercise on the neck and waist.Results:In this study, 779 valid questionnaires out of 923 were obtained. The effective rate of the questionnaires was 84.4%. The prevalence of cervical and lumbar diseases in the flying personnel without cervical and lumbar muscles stretching before flight was 36.2%, while the prevalence of flying personnel with cervical and lumbar muscles stretching before flight was 27.6%. There were significant differences between them (χ 2=6.217, P<0.05). The prevalence rate of cervical and lumbar diseases in the flying personnel without cervical and lumbar muscles relaxation after flight was 37.9%, while the prevalence of flying personnel without cervical and lumbar muscles with relaxation after flight was 23.7%. There were significant differences between them (χ 2=16.30, P<0.01). The prevalence rate of cervical and lumbar diseases in the flying personnel without regular training was 41.1%, while the prevalence of relaxation after flight was 29.8%. There were significant differences between them (χ 2=8.89, P<0.01). Logistic regression analysis showed that age, relaxing after the flight, and regular training of cervical and lumbar muscles were all independent factors that affected cervical and lumbar diseases. Among them, increased age was the risk factor of cervical and lumbar diseases ( OR=1.073, 95 %CI: 1.033-1.114, P<0.01), cervical and lumbar relaxing after the flight ( OR=0.456, 95 %CI: 0.303-0.686, P<0.01) and regular training of cervical and lumbar muscles ( OR=0.656, 95 %CI: 0.463-0.930, P<0.05) were both protective factors for cervical and lumbar diseases. Conclusions:The stretching before flight, relaxing after flight, and regular training of cervical and lumbar muscles can significantly reduce the prevalence of cervical and lumbar diseases in flying personnel.