Objective To evaluate the clinical superiority of transumbilical mini pure single-port laparoscopic Palomo's surgery on the treatment of primary teenage varicocele.Methods All operations were successfully completed using mini pure single-port laparoscopic Palomo's surgery.Its clinical effects were evaluated by the operative time,blood loss volume,intra-or post-operative complications,and hospital stay.Six to eighteen months after surgery,follow-up was made in 78 patients.Results All the operations were successful.The operation time was 5-15 (mean 8) minutes,the intra-operative loss blood was 1-5 (mean 1.5) mL,and the post-operative hospital stay was 2-4 (mean 3) days.No intra-operative or post-operative complications happened.Sperm analysis of 95％ patients came back to normal in 6-18 months.Conclusions The transumbilical mini pure single-port laparoscopic Palomo's technique has more obvious superiority and it is worthy of clinical application and generalized widely.

【Objective】 To explore the current status of positive psychological qualities among college students who had participated in voluntary blood donation in Changsha area, so as to demonstrate that scientific blood donation can promote mental health. 【Methods】 From May to June 2022, 1 440 college students in Changsha was selected as the research subjects by stratified random sampling method. They were divided into groups based on their experience of blood donation. A questionnaire survey was conducted using the General Information Questionnaire, the Chinese College Student Positive Psychological Product Quality Scale, and the Repeated Blood Donation Behavior Survey Scale. 【Results】 There were differences in the six dimensions of positive psychological quality among different family and friends in terms of their support for blood donation, blood donation status among different family members, understanding of voluntary blood donation knowledge (P<0.05). There were differences in positive psychological qualities among different levels of blood reimbursement experiences (cognitive dimension, moderation dimension, transcendence dimension), different blood donation times (moderation dimension, interpersonal dimension), different blood donation volumes (moderation dimension, fairness dimension), different comprehensive blood donation experiences (moderation dimension, transcendence dimension, interpersonal dimension, emotional dimension) and reasons for blood donation (cognitive dimension, moderation dimension, interpresonal dimension, emotional dimension, fairness dimension)(P<0.05). The positive psychological quality of college students was positively correlated with their intention to repeat blood donation behavior (P<0.01), and the difference was statistically significant. 【Conclusion】 The positive psychological quality of college students with blood donation experience in Changsha surpassed those without blood donation experience, and their positive psychological quality was positively correlated to their intention to repeated blood donation. Therefore, it is recommended to encourage voluntary blood donation among college students.