22 cases of posttraumatic neuroma (TN) were seen in Kunming General Hospital from 1979 to 1985.Clinical and pathologycal study showed that:(1) One of the main causative factors of TN was wound infection.(2)It took at least 6 months to form a TN.Those TN which formed within 6 months belonged to chronic proliferative inflammation.(3)Four Clinical and pathological findings were necessary to diagnosis TN.(4) The term,tumor-like nerve hyperplasia.not only a more accurate term than TN.but also helps avoid misunderstanding.

Objective To study the value of three dimensional dynamic contrast and digital subtraction MRI in diagnosing breast cancer.Methods 52 patients with breast diseases were enrolled in this study,including 27 malignant lesions and 36 benign lesions verified by histopathology.the morphologic features and enhancement kinetics of breast lesion on MRI were observed.The morphologic manifestation,early-phase enhancement rate,peak enhancement rate,peak time and time-signal intensity curve were evaluated.Results The benign lesions were mainly characterized by regular mass,well-defined border,internal septation,homogeneous enhancement,and the malignant lesions by irregular shape,speculated margin,rim enhancement,inhomogeneous enhancement.The early-phase enhancement rate,peak time and curve type were significantly different between breast benign and malignant lesions(P

Objective To determine the characteristics of retinal vascularization in premature infants. Methods A prospective study was carried out which included all premature infants with birth weight<2 000 g, who were hospitalized in Guangdong Women and Children's Hospital from September 1, 2009 to August 31, 2010. Close retinal screening and follow-up were carried out in order to record retinal vascularization at different post-conceptional ages. Spearman correlation analysis was performed for statistical analysis. Results A total of 231 infants were enrolled, and follow-up was completed in 212 infants giving a follow-up rate of 91.8%. Twenty-eight infants developed retinopathy of prematurity (ROP) resulting in a ROP morbidity of 13.2%, and 184 cases had full retinal vascularization. The median birth weight was 1 600 g (1 000-1 900 g) and the median gestational age was 32.4 weeks (27.0-35.5 weeks). In the 32-week post-conceptional age group, the proportion with full vascularization in ZoneⅠ,ⅡandⅢwas 87.1%(81/93), 7.5%(7/93) and 0.0%(0/93), respectively. In the 36-week post-conceptional age group, full vascularization was observed in ZoneⅠ, and the proportion with full vascularization in ZoneⅡandⅢrose sharply at 38-week and 40-week post-conceptional age, respectively. The proportion with full vascularization in ZoneⅢwas 100.0%(24/24) at 43-week post-conceptional age. According to Spearman correlation analysis, there was a positive correlation between ZoneⅡand Zone Ⅲ retinal vascularization progression and post-conceptional age (r=0.690 and 0.720;P=0.000). In premature infants, full retinal vascularization in ZoneⅠoccurred at 36-week post-conceptional age. The median gestational age for ZoneⅡand ZoneⅢretinal vascularization was 38 weeks (32.2-40.4 weeks) and 41 weeks (36.0-42.6 weeks), respectively. Therefore, a further 2-3 weeks were required for full retinal vascularization in ZoneⅡand ZoneⅢ. The time differences for under-vascularization in ZoneⅡandⅢwere 8 to 10 weeks, and the time differences for full vascularization in ZoneⅡandⅢwere 8 weeks and 6 weeks, respectively. Conclusion Retinal vascularization varies in premature infants. Almost all premature infants complete vascularization by term gestational age and the majority of infants need to be followed up to 41 weeks. It is essential to focus on the different retinal regions during maturation.

Objective To explore the effects of perinatal infection on retinopathy of prematurity (ROP).Methods A retrospective cohort study was performed to analyzed the clinical data of 238 preterm infants at gestational age ≤32 weeks who were delivered in Guangdong Women and Children Hospital from November 2014 to October 2015 and ROP screening examinations.Observation was not terminated until they were 45 weeks of corrected gestational age.Mild ROP was defined as having stage 1 or stage 2 ROP in zone Ⅱ or Ⅲ without additional disease,and severe ROP was defined as stage 3 or higher,any ROP in zone Ⅰ,prethreshold/threshold,with additional disease,and aggressive posterior retinopathy of prematurity (AP-ROP).Medical records of eligible preterm infants were retrospectively reviewed and analyzed.Occurrences of ROP,severe ROP,and clinically significant ROP requiring surgical treatment were assessed.Results The mean gestational age of the cohort was (30.10 ± 1.34) weeks (25.29-32.00 weeks) and the mean birth weight was (1 373 ± 272) g(720 ～2 330 g).ROP was diagnosed in 76 of 238 infants (31.9％),including 39 cases with mild ROP (16.4％) and 37 cases with severe ROP (15.5％).Surgical treatment was performed on 22 infants (9.2％).In the patients with ROP,the time to develop ROP from birth was (35.16 ± 14.26) d and the mean time of its most serious stage was (44.62 ± 18.99) d.In 22 patients with ROP who required surgical treatment,the time of surgical treatment was (50.27 ± 17.24) d.In univariate analysis,maternal perinatal infection disease was found to be associated with ROP occurrence (x2 =7.891,P =0.005) and ROP progression requiring surgical treatment (x2 =4.494,P =0.034).Small gestational age,low birth weight and long-term oxygen therapy were found to be asso ciated with ROP occurrence and severe ROP (gestational age:t =-5.803,P ＜ 0.001;t =-5.290,P ＜ 0.001;t =-4.150,P ＜ 0.001;birth weight:t =-4.942,P ＜ 0.001;t =-4.058,P ＜ 0.001;t =-3.126,P =0.002;the duration of oxygen therapy:t =2.351,P =0.020;t =2.473,P =0.018).Apgar scores ≤ 7 at 1 min and 5 min were found to be associated with severe ROP (x2 =4.803,P =0.028).Neonatal sepsis and neonatal fungal infection were found to be associated with ROP occurrence (x2 =6.071,P =0.014;x2 =4.070,P =0.044).Neonatal fungal infection was also found to be associated with severe ROP (x2 =5.479,P =0.019).Multivariate regression analysis indicated that maternal perinatal infection disease was associated with an increased risk of ROP and ROP progression requiring surgical treatment (OR =2.837,P =0.023;OR =4.087,P =0.012).Maternal preeclampsia was also associated with an increased risk of ROP (OR =2.506,P =0.040).Gestational age was an important risk factor for the development of ROP.The smaller the gestational age was,the higher the rate of occurring ROP and severe ROP (OR =0.518,0.508,0.520,all P ＜ 0.001).Conclusions Both fetal and neonatal exposure to infection appear to contribute to the increase of ROP risk in the preterm infants at gestational age ≤ 32 weeks.Maternal perinatal infection disease and maternal preeclampsia were independently associated with ROP occurrence and ROP progression in the preterm infants at gestational age ≤32 weeks.

Objective:To compare immune effects of hepatitis B-BCG combined vaccine and hepatitis B vaccine.Methods:The vaccines were administered to the guinea pig at 0, 1, 2 months. The tests were divided into three parts. The immune effects were compared in three kinds of the combined vaccine and hepatitis B vaccine(Part One), in three lots of the combined vaccine and hepatitis B vaccine(Part Two), in the group of combined vaccine and the group of hepatitis B vaccine and BCG(Part Three). After 1 month of each vaccine dose, serum specimens were measured for anti-HBs by ELISA.Results:The several studies have documented the serum anti-HBs concentritious in the group of combined vaccine in first dose were lower than those of the group of control, and the data showed no significantly difference. However, anti-HBs levels of the combined vaccine group in second vaccine dose and third vaccine dose were higher than those of the control group, and this difference was no longer statistically significant in group of combined vaccine and control, and among groups of combined vaccine.Conclusion:The immune efficacy of HBsAg in group of combined vaccine is similar to the group of hepatitis B vaccine in three doses immunization schedules.

Objective:To investigate the correlation of blood pressure variability within 24 h after thrombolysis with symptomatic intracerebral hemorrhage (sICH) and 90 d outcome in patients with acute ischemic stroke.Methods:Patients with acute ischemic stroke treated with recombinant tissue plasminogen activator in the Department of Neurology, Jinshan Branch, Shanghai Sixth People's Hospital from January 2017 to May 2019 were enrolled prospectively. The baseline data of the patients were collected. The patients were divided into sICH group and non-sICH group according to the changes of head CT and the National Institutes of Health Stroke Scale (NIHSS) score after thrombolysis. At 90 d after thrombolysis, the modified Rankin scale was used to evaluate the outcomes, and the patients were divided into a good outcome group (0-2) and a poor outcome group (3-6). The blood pressure within 24 h after thrombolysis was monitored and the parameters related to blood pressure variability in 5 time periods (0-2 h, 2-6 h, 6-12 h, 12-18 h, and 18-24 h) were calculated, including systolic blood pressure (SBP) and diastolic blood pressure (DBP) maximum (max), minimum (min), maximum and minimum difference (max-min) and mean (mean). The differences between the adjacent blood pressures were calculated, the standard deviation (SD), successive variation (SV), rise successive variability (SVrise), drop successive variability (SVdrop), the maximum squared difference in blood pressure rise (SVrisemax), the maximum squared difference in blood pressure drop (SVdropmax) were calculated and recorded, respectively. Multivariate logistic regression analysis was used to evaluate the effect of various blood pressure variability parameters on sICH and the outcomes after intravenous thrombolysis. Results:A total of 112 patients receiving intravenous thrombolysis were included in the study. Their median age was 71 years (range, 38-92 years), 66 were males (58.9%); median baseline NIHSS score was 10. Seventeen patients (15.2%) developed hemorrhagic transformation, 10 of them (8.9%) were sICH. The 90-d follow-up showed that 73 patients (65.2%) had a good outcome, 39 (34.8%) had a poor outcome and 7 of them (6.3%) died. There were significant differences in hypertension ( P=0.029), ischemic heart disease ( P=0.012), total cholesterol ( P=0.033), baseline NIHSS score ( P=0.003) between the sICH group and the non-sICH group. There were significant differences in age ( P=0.025), gender ( P=0.005), atrial fibrillation ( P=0.003), etiologic classification of stroke ( P=0.003), baseline NIHSS score ( P<0.001) and sICH ( P=0.003) between the poor outcome group and the good outcome group. In addition, there were significant differences in multiple blood pressure variability parameters among the above groups (all P<0.05). Multivariate logistic regression analysis showed that DBP SVdropmax, 6-12 h DBP SV, 12-18 h DBP SV, 6-12 h DBP SVdrop, 12-18 h DBP SVdrop were the independent risk factors for sICH after intravenous thrombolysis (all P<0.05); 2-6 h SBP SV, 2-6 h SBP SVrise, 2-6 h SBP SVdrop, 2-6 h DBP SV, 2-6 h DBP SVrise and 2-6 h DBP SVdrop were the independent risk factors for poor outcome after intravenous thrombolysis (all P<0.05). Conclusions:Early blood pressure and some blood pressure variability parameters are closely related to sICH and outcomes after intravenous thrombolysis in acute ischemic stroke. Closely monitoring of blood pressure and its variability can help clinical management and outcome prediction after intravenous thrombolysis.

An increasing number of studies have demonstrated that exosomes are closely associated with liver fibrosis and mediate the process of liver fibrosis by participating in cytokine secretion, macrophage activation, extracellular matrix remodeling, and hepatic stellate cell activation. This article summarizes that the resolution of liver fibrosis requires the reduction of pro-inflammatory and fibrotic cytokines, the reduction of extracellular matrix protein production, the increase of collagenase activity, and finally the loss of activated myofibroblasts. It is believed that exosomes play an important role in the treatment of liver fibrosis and are potential markers for diagnosis and treatment, and in future studies, it is necessary to improve exosome extraction techniques and standardization of treatment quantification.

AIM: To compare the efficacy of intravitreal injection of ranibizumab(IVR)and intravitreal injection of conbercept(IVC)in children with retinopathy of prematurity(ROP).METHODS: Retrospective study. A total of 1 100 eyes with ROP treated with intravitreal anti-VEGF at our hospital from January 2015 to June 2023 were included. According to the different therapeutic drugs, the children were divided into two groups: IVR group and IVC group. According to the degree of ROP, the patients were divided into three groups: aggressive ROP(A-ROP), Zone Ⅰ type 1 ROP and Zone Ⅱ type 1 ROP. The reactivation and retreatment between the two groups were compared after propensity score matching(PSM)analysis, and they were followed-up for at least 3 mo after surgery.RESULTS: In Zone Ⅱ type 1 ROP, there was a statistically significant difference in the rates of reactivation and retreatment between the IVR and IVC groups(P<0.05); however, in A-ROP and Zone I type 1 ROP, there were no statistically significant differences in the rates of reactivation and retreatment between the two groups(P>0.05). The risk of reactivation and retreatment of Zone I type 1 ROP was higher than the Zone II type 1 ROP. Furthermore, the use of drugs and corrected gestational age of first treatment were influencing factors of lesion recurrence and retreatment.CONCLUSION: There is a significant difference in the initial cure effect between the two drugs in Zone II type 1 ROP, with the reactivation and retreatment rates of the IVC group being much lower than those of the IVR group.