Objective To investigate the diagnosis and treatment of 2 cases with spontaneous renal vascular rupture, and discuss the possible causes and treatment methods of this disease. Methods The clinical data and treatment methods of the 2 patients with spontaneous renal vascular rupture treated with renal artery embolization in Universal Global Xi'an Beihuan Hospital were analyzed. Relevant literature was reviewed to summarize the possible causes of this condition. Results The patients had no obvious history of trauma and no obvious abnormal coagulation function, and sought treatment due to sudden lumbar and abdominal pain. Laboratory tests revealed significantly decreased hemoglobin level, and elevated blood glucose (27.8, 27.6mmol/L). Abdominal computed tomography (CT) indicated perirenal hematoma and active bleeding. The bleeding arteries were located at the terminal branches of the anterior renal artery. Precise embolization was performed using CT angiography and selective renal artery angiography plus embolization, achieving an immediate hemostasis success rate of 100%. Postoperative hemoglobin level stabilized, and follow-up CT scans showed significant absorption of the perirenal hematoma without significant deterioration of renal function. Based on literature review and case analysis, the possible cause of spontaneous renal vascular rupture in these two patients was renal vascular sclerosis due to long-term diabetes. Other common etiologies of this condition included renal tumor, vascular malformation, and hypertension. Conclusion Spontaneous renal vascular rupture is rare. Renal artery embolization, as aminimally invasive treatment, can effectively control bleeding and protect renal function. The specific pathogenesis of this condition still requires further investigation. Long-term diabetes mellitus with poor blood glucose control may be associated factors, but more evidence is needed.

Objective:To investigate the prevalence and genotype distribution of human papillomavirus (HPV) infection in the anorectal region among human immunodeficiency virus (HIV)-positive men who have sex with men (MSM) in Shenzhen, and explore the differences between HIV-positive and HIV-negative MSM populations, providing scientific evidence for HPV screening, vaccination, and related disease prevention.Methods:A total of 100 MSM recruited from the Department of Dermatovenerology of the Third People′s Hospital of Shenzhen between 2023 and 2024 were included. Questionnaire collected sociodemographic and clinical characteristics. Anorectal exfoliated cells were analyzed for HPV genotyping, and blood samples were tested for HIV antibodies and T lymphocyte subsets. Chi-square test was used to assess associations between qualitative variables. Results:Among 100 MSM, 58 were HIV-positive and 42 HIV-negative. The overall HPV infection rate was 93.10% (54/58) in HIV-positive MSM, with high-risk HPV at 79.31% (46/58) and low-risk HPV at 75.86% (44/58). The predominant genotypes were HPV6, 11, 16, 52, 18, 59, and 68. In HIV-negative MSM, HPV infection rate was 95.24% (40/42), with high-risk HPV at 57.14% (24/42) and low-risk HPV at 92.50% (37/40), dominated by HPV6, 11, 16, 51 and 52. HIV-positive MSM showed significantly higher infection rates of high-risk HPV16/18 ( P=0.032), HPV58 ( P=0.020), HPV59 ( P=0.031), and HPV68 ( P=0.007) compared to HIV-negative MSM. The maximum number of concurrent HPV infections was 12 in HIV-positive MSM versus 4 in HIV-negative MSM. Multivariate analysis revealed that HIV-positive MSM with CD4/CD8 ratio≤0.9 had significantly higher HPV positivity ( P<0.05). Conclusions:HIV-positive MSM exhibit elevated rates of high-risk and multiple HPV infections, closely associated with immune dysfunction. Strengthened HPV screening, vaccination, and immune status management are critical for preventing HPV-related malignancies in the population.

Objective:To investigate the prevalence and genotype distribution of human papillomavirus (HPV) infection in the anorectal region among human immunodeficiency virus (HIV)-positive men who have sex with men (MSM) in Shenzhen, and explore the differences between HIV-positive and HIV-negative MSM populations, providing scientific evidence for HPV screening, vaccination, and related disease prevention.Methods:A total of 100 MSM recruited from the Department of Dermatovenerology of the Third People′s Hospital of Shenzhen between 2023 and 2024 were included. Questionnaire collected sociodemographic and clinical characteristics. Anorectal exfoliated cells were analyzed for HPV genotyping, and blood samples were tested for HIV antibodies and T lymphocyte subsets. Chi-square test was used to assess associations between qualitative variables. Results:Among 100 MSM, 58 were HIV-positive and 42 HIV-negative. The overall HPV infection rate was 93.10% (54/58) in HIV-positive MSM, with high-risk HPV at 79.31% (46/58) and low-risk HPV at 75.86% (44/58). The predominant genotypes were HPV6, 11, 16, 52, 18, 59, and 68. In HIV-negative MSM, HPV infection rate was 95.24% (40/42), with high-risk HPV at 57.14% (24/42) and low-risk HPV at 92.50% (37/40), dominated by HPV6, 11, 16, 51 and 52. HIV-positive MSM showed significantly higher infection rates of high-risk HPV16/18 ( P=0.032), HPV58 ( P=0.020), HPV59 ( P=0.031), and HPV68 ( P=0.007) compared to HIV-negative MSM. The maximum number of concurrent HPV infections was 12 in HIV-positive MSM versus 4 in HIV-negative MSM. Multivariate analysis revealed that HIV-positive MSM with CD4/CD8 ratio≤0.9 had significantly higher HPV positivity ( P<0.05). Conclusions:HIV-positive MSM exhibit elevated rates of high-risk and multiple HPV infections, closely associated with immune dysfunction. Strengthened HPV screening, vaccination, and immune status management are critical for preventing HPV-related malignancies in the population.

Objective:To explore the clinical application of time of flight-magnetic resonance angiography (TOF-MRA), silent magnetic resonance angiography (SilenZ-MRA) and high-resolution vessel wall imaging (HR-VWI) in non-invasive evaluation of intracranial aneurysm after embolization.Methods:From February 2021 to February 2022, 39 patients, including 8 males and 31 females, who were 29-86 (54.50±11.80) years old and had received intracranial aneurysm embolization were collected in the Second Affiliated Hospital of Nanchang University. Kruskal-Wallis test was used to compare the image quality score and the evaluation results of lumen stenosis rate in the stent segments by TOF-MRA, SilenZ-MRA and HR-VWI. The diagnostic value of TOF-MRA, SilenZ-MRA and HR-VWI was analyzed by receiver operating characteristic (ROC) curve with DSA as the reference standard.Results:The image quality scores of TOF-MRA, SilenZ-MRA and HR-VWI were 2(1, 3), 4(3, 4) and 4(4, 4), respectively, with statistically significant difference ( H=80.78, P<0.05). The pairwise comparison results were as follows: TOF-MRA vs SilenZ-MRA, P<0.017; TOF-MRA vs HR-VWI, P<0.017; SilenZ-MRA vs HR-VWI, P>0.017. The lumen stenosis rates of stent segments measured by TOF-MRA, SilenZ-MRA, HR-VWI and DSA were 45.00% (29.60%, 61.05%), 17.60% (10.80%, 26.80%), 13.35% (8.90%, 15.95%) and 7.95% (4.80%, 11.25%), respectively, with statistically significant difference ( H=67.96, P<0.05). The results of comparison between TOF-MRA, SilenZ-MRA, HR-VWI and DSA were respectively as follows: TOF-MRA vs DSA, P<0.017; SilenZ-MRA vs DSA, P<0.017; HR-VWI vs DSA, P>0.017. DSA review showed that 12 (27.91%,12/43) aneurysms were not completely embolized, and 31 (72.09%, 31/43) aneurysms were completely embolized. The area under the curve of TOF-MRA, SilenZ-MRA and HR-VWI for evaluating the postoperative complete embolization of aneurysm was 0.75, 1.00 and 0.94, respectively, with statistically significant differences between TOF-MRA and HR-VWI ( Z=2.53, P<0.05) as well as between TOF-MRA and SilenZ-MRA ( Z=3.32, P<0.05). Conclusions:HR-VWI can clearly display the stent-segment lumen of the parent artery, and evaluate the stent-segment arterial wall and whether the stent-segment lumen is unobstructed or not. SilenZ-MRA is significantly superior to TOF-MRA in the evaluation of postoperative embolization status of aneurysms, and slightly superior to HR-VWI in tumor neck display. Combined application of HR-VWI and SilenZ-MRA has certain clinical significance for non-invasive evaluation of intracranial aneurysm after embolization.

Objective:To explore the technical feasibility of CT feature tracking (CT-FT) technique in evaluating left ventricular myocardial strain and evaluate the change of myocardial strain in patients with coronary heart disease.Methods:Eighty-one patients with coronary heart disease (lesion group) and 33 patients with normal coronary artery (control group) matched with age and sex were collected retrospectively from the Second Affiliated Hospital of Nanchang University from April 2019 to October 2020. The lesion group was first divided into single vessel stenosis group (42 cases) and multi vessel stenosis group (39 cases) according to the number of coronary artery stenosis branches, and the global myocardial strains of the left ventricle between the groups were analyzed. Lesion site included the left anterior descending branch (LAD), right coronary artery (RCA) and left circumflex branch (LCX), respectively. According to the degree of vascular stenosis, the lesion groups were divided into normal group, mild stenosis group, moderate stenosis group and severe stenosis group. The segmental myocardial strains of the branch segment of LAD, RCA or LCX were analyzed between groups. All CCTA examinations were performed with retrospective electrocardiogram gating. CVI 42 cardiac postprocessing software was used to obtain myocardial strain parameters, including global peak longitudinal strain (GPLS), global peak circumferential strain (GPCS), global peak radial strain (GPRS), and the segmental myocardial strains of the branch segment of LAD, RCA or LCX. The segmental myocardial strains included the peak longitudinal strain (PLS), peak circumferential strain (PCS) and peak radial strain (PRS). One way ANOVA or Kruskal Wallis H test were used for multi group analysis. Results:With the increased number of coronary artery stenosis branches, the absolute value of GPLS gradually decreased. The GPLS of the control group, single vessel stenosis group and multi vessel stenosis group were -14.1%±2.7%, -11.5%±2.3% and -8.8%±2.0%, respectively. The difference of GPLS between the 3 groups or any 2 groups was statistically significant (all P<0.001). The absolute values of GPRS and GPRS in multi vessel stenosis group were significantly lower than those in control group and single vessel stenosis group (all P<0.001). There was no significant difference in GPRS or GPRS between single vessel stenosis group and control group ( P=0.083, 0.118). And there were significant differences in the segmental myocardial strains of the branch segment of LAD, RCA or LCX among 3 groups ( P<0.001). In severe stenosis group, the absolute values of PRS, PCS and PLS in LAD, RCA or LCX were significantly lower than those in moderate stenosis group, mild stenosis group and normal group (all P<0.05). In the moderate stenosis group, the absolute value of PLS in each branch segment was lower than that of the mild stenosis and normal group (all P<0.05), and there was no significant difference in any 2 other myocardial strain parameters of each branch (all P>0.05). Conclusions:CT-FT technique was feasible to evaluate left ventricular myocardial function. With the increased number or degree of coronary artery stenosis, the global and segmental myocardial strain parameters of left ventricle gradually decreased, and the longitudinal strain was more sensitive.

As guided by the policy of building national regional medical centers, it is imperative to advance the construction of the national regional medical centers for mental health to achieve the sustainable and balanced development of the mental health cause of the country. The authors summarized the current status of national regional medical centers, and analyzed challenges faced in management and operation mode, government investment and compensation mechanism, expansion of high-quality psychiatric medical resources, as well as research and innovation of mental diseases of these centers. On such basis, the authors put forward corresponding countermeasures and suggestions for the next stage of development.

Objective: The registration data of local cancer registries from 2008 to 2012 were collected by National Central Cancer Registry to estimate the incidence and mortality of female breast cancer in China. Methods: Data from 135 registries were qualified and selected in the final analysis, and each registry at least has submitted data from 2010 to 2012. Cancer incidence and mortality analyses were stratified by area (urban/rural, eastern/middle/western areas) and age group. The age composition of standard population of Chinese census in 2000 and Segi′s population were used for age-standardized incidence and mortality in China and worldwide, respectively. Results: A total of 135 registries were recruited in the analysis, covering 629 333 910 person-years (382 669 450 in urban and 246 664 460 in rural). About 13, 258 cases of female breast cancer were diagnosed and 32 205 cases were dead between 2008 and 2012. Female breast cancer incidence was 42.67/100, 000 and age-standardized rate calculated by worldwide standard population was 28.87/100, 000. The crude incidence of urban area was 51.85/100, 000, higher than 28.29/100, 000 of rural area, and the crude incidence of eastern area was 46.35/100, 000, higher than 36.38/100, 000 of middle area and 27.60/100, 000 of western area. The age-specific incidence increased with age and reached the peak at age 55-59 (96.36/100, 000), and declined at age 60. The age-standardized incidence rate by Chinese standard population increased 30.56% from 2003 to 2012. The increase rate of rural area was 72.32%, faster than 23.48% of urban area. Female breast cancer mortality was 10.36/100, 000 and the age-standardized rate calculated by worldwide standard population was 6.61/100, 000. The crude mortality of urban area was 11.64/100, 000, higher than 8.36/100, 000 of rural area, and the crude mortality of eastern area was 10.81/100, 000, higher than 7.38/100, 000 of middle area and 9.90/100, 000 of western area. The age-specific incidence increased with age and reached the peak at age above 85 (61.25/100, 000). Age-standardized incidence rate by Chinese standard population remained stable during the period of 2003-2012 (6.23%). The mortality rate mainly increased in rural area (54.94%), while decreased 2.32% in urban area over the 10 years. Conclusions Although the incidence and mortality of breast cancer in China are comparatively low worldwide, in China the incidence and mortality of female breast cancer have rose to the first and sixth place respectively among all the female cancers. The disease burden of breast cancer is very different between urban and rural area. Therefore, the targeted measure and strategy of control and prevention according to the area difference are needed.

Objective The registration data of local cancer registries from 2008 to 2012 were collected by National Central Cancer Registry to estimate the incidence and mortality of female breast cancer in China. Methods Data from 135 registries were qualified and selected in the final analysis, and each registry at least has submitted data from 2010 to 2012.Cancer incidence and mortality analyses were stratified by area ( urban／rural, eastern／middle／western areas ) and age group. The age composition of standard population of Chinese census in 2000 and Segi′s population were used for age?standardized incidence and mortality in China and worldwide, respectively. Results A total of 135 registries were recruited in the analysis, covering 629 333 910 person?years (382 669 450 in urban and 246 664 460 in rural). About 13, 258 cases of female breast cancer were diagnosed and 32 205 cases were dead between 2008 and 2012. Female breast cancer incidence was 42.67／100, 000 and age?standardized rate calculated by worldwide standard population was 28.87／100,000.The crude incidence of urban area was 51.85／100,000, higher than 28.29／100,000 of rural area, and the crude incidence of eastern area was 46.35／100,000, higher than 36.38／100,000 of middle area and 27.60／100,000 of western area. The age?specific incidence increased with age and reached the peak at age 55?59 ( 96.36／100, 000 ), and declined at age 60. The age?standardized incidence rate by Chinese standard population increased 30.56% from 2003 to 2012. The increase rate of rural area was 72.32%, faster than 23.48% of urban area. Female breast cancer mortality was 10.36／100,000 and the age?standardized rate calculated by worldwide standard population was 6.61／100,000. The crude mortality of urban area was 11.64／100,000, higher than 8.36／100,000 of rural area, and the crude mortality of eastern area was 10.81／100,000, higher than 7.38／100,000 of middle area and 9.90／100,000 of western area. The age?specific incidence increased with age and reached the peak at age above 85 ( 61.25／100, 000). Age?standardized incidence rate by Chinese standard population remained stable during the period of 2003?2012 (6.23%). The mortality rate mainly increased in rural area (54.94%), while decreased 2.32% in urban area over the 10 years. Conclusions Although the incidence and mortality of breast cancer in China are comparatively low worldwide, in China the incidence and mortality of female breast cancer have rose to the first and sixth place respectively among all the female cancers. The disease burden of breast cancer is very different between urban and rural area. Therefore, the targeted measure and strategy of control and prevention according to the area difference are needed.

Objective The registration data of local cancer registries from 2008 to 2012 were collected by National Central Cancer Registry to estimate the incidence and mortality of female breast cancer in China. Methods Data from 135 registries were qualified and selected in the final analysis, and each registry at least has submitted data from 2010 to 2012.Cancer incidence and mortality analyses were stratified by area ( urban／rural, eastern／middle／western areas ) and age group. The age composition of standard population of Chinese census in 2000 and Segi′s population were used for age?standardized incidence and mortality in China and worldwide, respectively. Results A total of 135 registries were recruited in the analysis, covering 629 333 910 person?years (382 669 450 in urban and 246 664 460 in rural). About 13, 258 cases of female breast cancer were diagnosed and 32 205 cases were dead between 2008 and 2012. Female breast cancer incidence was 42.67／100, 000 and age?standardized rate calculated by worldwide standard population was 28.87／100,000.The crude incidence of urban area was 51.85／100,000, higher than 28.29／100,000 of rural area, and the crude incidence of eastern area was 46.35／100,000, higher than 36.38／100,000 of middle area and 27.60／100,000 of western area. The age?specific incidence increased with age and reached the peak at age 55?59 ( 96.36／100, 000 ), and declined at age 60. The age?standardized incidence rate by Chinese standard population increased 30.56% from 2003 to 2012. The increase rate of rural area was 72.32%, faster than 23.48% of urban area. Female breast cancer mortality was 10.36／100,000 and the age?standardized rate calculated by worldwide standard population was 6.61／100,000. The crude mortality of urban area was 11.64／100,000, higher than 8.36／100,000 of rural area, and the crude mortality of eastern area was 10.81／100,000, higher than 7.38／100,000 of middle area and 9.90／100,000 of western area. The age?specific incidence increased with age and reached the peak at age above 85 ( 61.25／100, 000). Age?standardized incidence rate by Chinese standard population remained stable during the period of 2003?2012 (6.23%). The mortality rate mainly increased in rural area (54.94%), while decreased 2.32% in urban area over the 10 years. Conclusions Although the incidence and mortality of breast cancer in China are comparatively low worldwide, in China the incidence and mortality of female breast cancer have rose to the first and sixth place respectively among all the female cancers. The disease burden of breast cancer is very different between urban and rural area. Therefore, the targeted measure and strategy of control and prevention according to the area difference are needed.

Cho and So studied, with horseradish peroxidase retrograde tracing technique, the initial delay time and the rate of regrowth of damaged retinal ganglion cell axons regenerating into the autologous sciatic nerve implanted into the retinae in adult hamsters. This is the only report, to our knowledge, on the rate of regeneration of damaged central neuron axons. The present experiment tackles this issue using autologous sciatic nerve transplantation into the dorsal horn of the damaged spinal cord in adult rats, a model introduced by David and Aguayo, and visualized the regenerating axons with anti-neurofilament monoclonal antibody immunohistochemical method. Our results are as follows: the minimum initial delay time of the regenerating spinal axons in peripheral nerve grafts is 4 days. After which axons continue to regrow into the grafts within a definite period, suggesting different initial delay time for different regenerating axons. The regenerating spinal axons differ in their rate of regrowth, the fastest rate being 2.14 mm/d.