Objective To explore the MRI diagnosis characteristics of reversible splenial lesion syndrome (RESLES).Methods The clinical and imaging data of 12 cases of RESLES was analyzed retrospectively.MRI plain scan and DWI of brain were performed in all the cases.Apparent diffusion coefficient (ADC) value was obtained through post-processing function.Results 8 of 12 cases were children and 4 were adults.The splenium of corpus callosum of 12 cases showed round lesions,with slightly long T1 and slightly long T2 signal on MRI,high signal on DWI,and low signal on ADC map.The mean value of ADC of 12 cases was about 0.43× 10-3 mm2/s.The MRI reexamination was made after treatment in 12 cases,which showed the lesion of splenium of corpus callosum disappeared,and clinical syndromes were improved.Conclusion The MRI manifestation of RESLES is characterized by solitary lesion.The ADC value could accurately reflect the molecular diffusion information of the lesion.

Objective To explore the co-infection rate,immune function and drug resistance status among tuberculosis patients co-infected with HBV,HCV and HIV in Yunnan.Methods A total of 2271 TB patients in Yunnan province admitted to the Third People's Hospital of Kunming from April 2020 to March 2023 were collected for HBV,HCV,HIV serological tests,lymphocyte tests and drug resistance gene detection,and analysis of TB infection of HBV,HCV,HIV infection,immune function and resistance.Results Among the 2271 TB patients,499 cases were infected with TB and HBV,the infection rate was 21.97%.196 cases were infected with HCV,the infection rate was 8.63%.166 cases were infected with HIV,the infection rate was 7.31%.There were 1410 patients with simple tuberculosis,accounting for 62.09%.The infection rates of tuberculosis combined with HBV,HCV and HIV were statistically significant in different age groups(P<0.01).The absolute number expression of CD3+,CD4+ and CD8+T cells was higher in TB patients with HBV and HCV,and the differences between the two were statistically significant(P<0.05).The absolute number expression of CD3+ and CD4+T cells was lower in TB patients with HIV,and the absolute number expression of CD8+T cells was increased,and the difference between the two was statistically significant(P<0.01).The absolute number of CD3+,CD4+ and CD8+T cells was higher in female patients with tuberculosis and HIV,and the differences were statistically significant(P<0.05).In all age groups,the absolute number of CD3+ and CD8+T cells in tuberculosis patients with HIV was the lowest in 46-65 years old group,and the differences were statistically significant(P<0.05).Among the 2271 TB patients,391 were resistant to any first-line drug(single drug resistance),and the overall drug resistance rate was 17.22%.Among them,52 cases were combined with HBV drug resistance,the resistance rate was 10.42%.There were 10 cases with HCV drug resistance,the drug resistance rate was 5.10%.40 cases were combined with HIV drug resistance,the drug resistance rate was 24.10%.Drug resistance in 289 patients with simple tuberculosis was 20.50%.Among them,33 cases were single drug resistant rifampicin,accounting for 19.88%.Conclusion Tuberculosis has the highest rate of co-infection with HBV,and the immune function of TB patients co-infected with HIV is the worst.The drug resistance rate of TB patients co-infected with HIV is also the highest,with resistance to rifampicin being the most common.TB is a chronic wasting disease,with poorer immune function compared to the general population,making it more susceptible to HBV infection.TB patients who are also infected with HIV tend to have worsened immune function and increased drug resistance.