Objective:To find out the existing pattern of HPV16 in tongue cancer cell and to analyze itsrole in carcinogenesis of tongue cancer. Methods :Southern blot hybridization was used to detect the HPV16sequence and its existing condition in 20 cases of fresh human tongue cancers. Results:HPV16 DNA se-quence in 5 cases of 20 tongue cancers was detected. And HPV16 DNA existed in tongue cancer cell in non-integration pattern. Conclusion:HPV16 was involved in carcinogenesis of tongue cancer through interactionof HPV gene products rather than its integration with genome of target cell.

Hirschsprung's disease (HD) is one of the most common gastrointestinal malformations in pediatric surgery.HD may be one complex disease due to interaction of multiple genes with the environment,which is a disease closely related to intestinal neural crest cell migration disorders,but the actual pathogenesis was not yet clear.Even if the surgical resection of intestinal lesions,but the postoperative complications still occur in different degrees.In recent years,with the continuous improvement of surgical methods,the radical resection techniques of HD has made great progress,and the vast majority of children can get better results after operation.However,part of the distal internal sphincter has been retained by all the existing radical resection technology,which may result in postoperative constipation,abdominal distension and enterocolitis,seriously affect the quality of life in children.Most of these complications are related to the residual of rectal muscle sheath,therefore,how to improve the therapeutic effect of HD,more accurate treatment of rectal muscle sheath,is the goal of pediatric surgeons to pursue.

Objective:To explore the influencing factors of early postoperative complications after radical resection of congenital choledochal cyst (CCC) in a single center and provide some clinical basis and guidance for reducing postoperative complications.Methods:Case control study.Clinical data of 124 children (29 boys and 95 girls) with CCC diagnosed and radically treated at the Affiliated Hospital of Zunyi Medical University from September 2010 to October 2019 were analyzed.According to postoperative complications (bile leakage, gastrointestinal anastomotic fistula, bleeding, incision dehiscence, cholangitis, abdominal infection, pancreatitis, and lymphatic fistula), these children were divided into the complication group (group A) and non-complication group (group B). Age, laboratory indicators[preoperative white blood cell (WBC) count, hemoglobin, glutamic pyruvic transaminase, prealbumin, and postoperative albumin], and clinical factors, such as operation method, operation time, intraoperative blood loss, cyst type, cyst diameter, hepatic duct diameter, abdominal operation history, biliary sludge and calculus, hepatic duct anatomic variation, and pancreaticobiliary maljunction were statistically analyzed between the two groups.The t-test was performed for normal distribution of the measurement data, and the non-parametric rank sum test for non-normal distribution.Multivariate analysis was made using Logistic regression. Results:Among the 124 children, 25(20.16%) had complications, and 99(79.84%) had no complications.Bile leakage occurred in 14 children (11.29%), of whom 7 received operation again and 7 received conservative treatment.Gastrointestinal anastomotic fistula occurred in 2 children (1.61%), of whom 1 was re-operated and 1 was cured conservatively.One child (0.81%) was complicated with bleeding and cured by re-operation.Two children (1.61%) were complicated with incision dehiscence, of whom 1 was cured by re-operation and 1 was cured by conservative treatment.Cholangitis in 2 children (1.61%), abdominal infection in 2 children (1.61%), pancreatitis in 1 child (0.81%), and lymphatic fistula in 1 child (0.81%) were all conservatively cured.No significant difference was found in non-normal distribution indicators-age and WBC count-between the two groups (all P>0.05). Blood loss volume and cyst diameter were significantly different between the two groups (all P<0.05). Postoperative albumin[(27.84±4.62) g/L vs.(32.45±3.72) g/L] meeting the normal distribution showed a statistically significant difference between the two groups ( t=5.254, P<0.05). Logistic multivariate regression analysis suggested that preoperative anemia ( OR=7.922, 95% CI: 1.468-42.757) and biliary sludge and calculus ( OR=1.295, 95% CI: 1.075-4.359) were independent risk factors for postoperative complications; postoperative albumin ( OR=0.055, 95% CI: 0.012-0.244) was a protective factor for postoperative complications, and the differences were statistically significant (all P<0.05). Conclusions:The larger the cyst diameter, the more the intraoperative bleeding, and the higher the risk of operation.Treating anemia before operation, clearing sludge in the hepatic duct during operation, reducing bleeding, and strengthening the monitoring of albumin and hemoglobin during the perioperative period can prevent and reduce early complications after radical resection of CCC in children.