Through dog models of common bile duct obstruction (BDO), the contents of liver superoxide dismutase (SOD) and malondialdehyde(MDA) were measured 2,3,4 and 5 weeks after BDO. Results indicated that the hepatic MDA content was increased 2 weeks after BDO as compared with control group (Ｐ＜0.01), the hepatic SOD content was decreased 3 weeks after BDO (Ｐ＜0.05). When bile duct obstructing, these changed were more serious. The results suggest that liver has little ability to eliminate the superoxide free radicals after BDO, whereas the lipid peroxidation products increase. It may be one of the mechanisms of liver damage after BDO.
ObjectiveTo observe the clinical features, treatment and prognosis of ciliary body tumors. MethodsA retrospective clinical study. From November 2011 to March 2023, 8 cases (8 eyes) with ciliary body tumours confirmed by pathohistological examination at the Department of Ocular Oncology, Peking Tongren Hospital were included in the study. Patients' age, gender, involved eyes, symptoms, best corrected visual acuity (BCVA), intraocular pressure, cataract, lens subluxation, and imaging manifestations were collected in detail. All affected eyes were treated surgically. The follow-up time after surgery ranged from 1 to 10 years. The patients' clinical presentation as well as imaging, pathohistological features and treatment and prognosis were analysed retrospectively. ResultsAmong 8 cases (8 eyes), there were 3 males (3 eyes) and 5 females (5 eyes), 3 and 5 eyes in the right and left eyes, respectively. The median age was 44 years. Ciliary body medulloepitheliomas, melanoma, squamous cell carcinoma, leiomyoma, schwannoma, and adenoma of the nonpigmcnted ciliary epithelium were in 2, 2, 1, 1, 1, and 1 eyes, respectively. All reported decreased or loss of vision. Cataract, vitreous opacity, red eye and or (ocular pain), retinal detachment, lens subluxation, and secondary glaucoma were 6, 4, 4, 2, 1, and 1 eyes, respectively. Diagnostic imaging was consistent with pathological findings in 3 eyes. The first surgery was performed for enucleation and orbital implantation in 2 eyes, the patients were 9 and 10 years old with medullary epithelioma; the follow-up time after surgery was 1 and 5 years, respectively. Local tumour resection was performed in 6 eyes. Among them, 3 eyes with benign tumours were followed up for 1 to 9 years after surgery; 2 eyes showed significant improvement in visual acuity, 1 eye with adenoma of the nonpigmcnted ciliary epithelium had a preoperative BCVA of finger count/1 m, and a postoperative BCVA of 0.5, and 1 eye with leiomyoma had a preoperative BCVA of 0.06, and a postoperative BCVA of 0.5; and 1 eye was lost to follow-up. Malignant tumour in 3 eyes, of which 2 eyes recurred after surgery. Re-operation for enucleation and local tumour excision combined with local cryotherapy in 2 eyes of recurrence were 1 eye each, respectively. The follow-up period after surgery was 2 and 4 years, respectively. No recurrence or metastasis was observed in any of the eyes during the follow-up period or at the final follow-up. ConclusionsCiliary body tumour types and clinical presentations are complex and varied; imaging can detect tumours but is poor at determining the nature of the lesion. Benign tumours do well with local excision surgery; malignant tumours do well with enucleation.
ObjectiveTo analyze independent factors for treatment-requiring retinopathy of prematurity (TR-ROP) and establish a predictive nomogram model for TR-ROP. MethodA retrospective cohort study. A total of 6 998 preterm infants who were born at Guangdong Women's and Children's Hospital between January 1, 2012 and March 31, 2022 and were screened for retinopathy of prematurity (ROP) were included in the study. TR-ROP was defined as type 1 ROP and aggressive ROP; 22 independent factors including general information, maternal perinatal conditions, interventions and neonatal diseases related to ROP were collected. The infants were divided at the level at an 8:2 ratio according to clinical experience, with 5 598 in the training cohort and 1 400 in the validation cohort. t test was used for comparison of quantitative data and χ2 test was used for comparison of counting data between groups. Multivariate logistic regression analysis was carried out for the indicators with differences in the univariate analysis. The visualized regression analysis results of R software were used to obtain the histogram. The accuracy of the nomogram was verified by C-index and receiver operating characteristic curve (ROC curve). ResultsAmong the 6 998 children tested, 4 069 were males and 2 920 were females. Gestational age was (33.69±3.19) weeks; birth weight was (2 090±660) g. There were 376 cases of TR-ROP (5.4%, 376/6 998). The results of multivariate logistic regression analysis showed that gestational age [odds ratio (OR) =0.63, 95% confidence interval (CI) 0.47-0.85, P=0.002], intrauterine distress (OR=0.30, 95%CI 0.10-0.99, P=0.048), bronchopulmonary dysplasia (OR=0.23, 95%CI 0.09-0.60, P=0.003), hypoxic-ischemic encephalopathy (OR=5.40, 95%CI 1.45-20.10, P=0.012), blood transfusion history (OR=4.05, 95%CI 1.50-10.95, P=0.006) were the independent influencing factors of TR-ROP. Based on this and combined with birth weight, a nomogram prediction model was established. The C-index of the training set and validation set were 0.940 and 0.885, respectively, and the area under ROC curve were 0.945 (95%CI 0.930-0.961) and 0.931 (95%CI 0.876-0.986), respectively. The sensitivity and specificity were 86.2%, 94.0% and 83.2%, 93.3%, respectively. ConclusionsGestational age, intrauterine distress, bronchopulmonary dysplasia, hypoxic-ischemic encephalopathy and blood transfusion history are the independent factors influencing the occurrence of TR-ROP. The TR-ROP nomogram prediction model based on independent influencing factors has high sensitivity and specificity.