Objective:To investigate the efficacy of preoperative ultrasound-guided injection of carbon nanoparticle suspension in cervical lymph node dissection for thyroid cancer reoperation.Methods:Ninety-four patients undergoing reoperation for thyroid cancer admitted by the same physician team of the Department of Thyroid and Breast Surgery of the Ninety-sixty Hospital of the People’s Liberation Army (PLA) from Jan. 2019 to Sep. 2024 were retrospectively analyzed. According to the different scope of the initial surgery, they were divided into the re-specification clearance group, the regional lymph node clearance group, and the metastatic lymph node dissection group, and the groups were subdivided into the carbon nanoparticle group and the control group according to whether they were injected with carbon nanoparticle before the surgery or not. The t-test, χ2-test, and non-parametric test were used to compare the age, gender, surgical method, duration of surgery, total number of lymph nodes detected, and positive lymph node detection rate between the nano-charcoal group and the control group in the three groups. Results:There was no statistically significant difference between the three groups in terms of age, gender, surgical methods, or the total number of lymph nodes detected (all P>0.05) , and the difference between the surgical time of the carbon nanoparticle group in the re-regulation clearance group and the control group was not statistically significant ( P>0.05) ; the surgical time of the carbon nanoparticle group was shorter than that of the control group in both the regional lymph node clearance and the metastatic lymph node dissection groups, and the difference was statistically significant (all P<0.05) ; the positive detection rate of lymph nodes in the carbon nanoparticle group was higher than that in the control group among the three groups, and the difference was statistically significant (all P<0.05) . Conclusion:In the operation of cervical lymph node dissection for papillary thyroid cancer, preoperative ultrasound-guided injection of carbon nanoparticle can accurately localize the lymph nodes, increase the positive detection rate of lymph nodes, reduce the difficulty of surgical operation, and shorten the operation time.

Objective:To investigate the application of transoral robotic thyroidectomy (TORT) in overweight patients.Methods:Clinical data of 109 thyroid tumor patients who underwent TORT at 960th Hospital of People’s Liberation Army from May. 2020 to Aug. 2023 were retrospectively collected and analyzed. After excluding 10 patients who underwent prophylactic lateral neck dissection, a total of 99 patients were included in this study. According to the World Health Organization (WHO) guidelines, which define people with BMI:25-29.9 kg/m 2 as overweight, we divided the 99 patients into normal weight group (n=69) and overweight group (n=30) . To make the baseline data consistent between the two groups and ensure comparability, 20 matched pairs were generated using a 1∶1 propensity score matching (PSM) method, considering four clinicopathologic factors: age, gender, diameter of tumor and operation scope. In the normal-weight group, there were 18 females and 2 males, aged (32.82±9.51) years (range: 17-53 years) , and there exhibited 18 females and 2 males in the overweight group, aged (35.14±10.63) years (range: 18-55 years) . Results:All patients successfully underwent the operation without conversions to open surgery. After matching, both groups had 2 cases of thyroid adenoma and 18 cases of papillary thyroid carcinoma ( P=1) , with no statistically significant difference in the surgical scope between the two groups ( P=0.376) . There was no statistically significant difference in the mean tumor diameter between the normal-weight group and the overweight group (5.38±1.79 mm vs. 5.61±3.32 mm, P=0.575) . All malignant tumor cases in both groups were classified as T1 stage, and there was no statistically significant difference in N stage ( P=0.186) . All patients with malignant tumors underwent central lymph node dissection, there was no significant difference in the number of central lymph nodes dissected ( P=0.623) and metastatic lymph nodes ( P=0.109) between the two groups. There were no statistically significant differences in operative duration (217.53±62.83 min vs. 220.67±73.73 min, P=0.808) , median postoperative hospital stay [6 (6,7.75) days vs. 6 (6,7) days, P=0.682], or 24-hour drainage volume (78.52±30.49 mL vs. 68.23±29.11 mL, P=0.180) between the normal-weight group and the overweight group. There was no permanent hypoparathyroidism, postoperative hemorrhage, lymphatic fistula, mental nerve injury, postoperative infection in both groups. In both groups, there occurred one case of transient hypoparathyroidism. As for other complications, 1 case of temporary recurrent laryngeal nerve injury and oral tearing occurred in the overweight group, while the normal-weight group had 1 case of skin scald. Conclusions:Among patients who underwent TORT, the overweight group exhibited comparable surgical outcomes and postoperative complications to those in the normal-weight group. TORT is a safe and feasible surgical option for overweight patients, which provides more surgical options for this patient population.

Objective:To investigate the efficacy of preoperative ultrasound-guided injection of carbon nanoparticle suspension in cervical lymph node dissection for thyroid cancer reoperation.Methods:Ninety-four patients undergoing reoperation for thyroid cancer admitted by the same physician team of the Department of Thyroid and Breast Surgery of the Ninety-sixty Hospital of the People’s Liberation Army (PLA) from Jan. 2019 to Sep. 2024 were retrospectively analyzed. According to the different scope of the initial surgery, they were divided into the re-specification clearance group, the regional lymph node clearance group, and the metastatic lymph node dissection group, and the groups were subdivided into the carbon nanoparticle group and the control group according to whether they were injected with carbon nanoparticle before the surgery or not. The t-test, χ2-test, and non-parametric test were used to compare the age, gender, surgical method, duration of surgery, total number of lymph nodes detected, and positive lymph node detection rate between the nano-charcoal group and the control group in the three groups. Results:There was no statistically significant difference between the three groups in terms of age, gender, surgical methods, or the total number of lymph nodes detected (all P>0.05) , and the difference between the surgical time of the carbon nanoparticle group in the re-regulation clearance group and the control group was not statistically significant ( P>0.05) ; the surgical time of the carbon nanoparticle group was shorter than that of the control group in both the regional lymph node clearance and the metastatic lymph node dissection groups, and the difference was statistically significant (all P<0.05) ; the positive detection rate of lymph nodes in the carbon nanoparticle group was higher than that in the control group among the three groups, and the difference was statistically significant (all P<0.05) . Conclusion:In the operation of cervical lymph node dissection for papillary thyroid cancer, preoperative ultrasound-guided injection of carbon nanoparticle can accurately localize the lymph nodes, increase the positive detection rate of lymph nodes, reduce the difficulty of surgical operation, and shorten the operation time.

Objective:To investigate the application of transoral robotic thyroidectomy (TORT) in overweight patients.Methods:Clinical data of 109 thyroid tumor patients who underwent TORT at 960th Hospital of People’s Liberation Army from May. 2020 to Aug. 2023 were retrospectively collected and analyzed. After excluding 10 patients who underwent prophylactic lateral neck dissection, a total of 99 patients were included in this study. According to the World Health Organization (WHO) guidelines, which define people with BMI:25-29.9 kg/m 2 as overweight, we divided the 99 patients into normal weight group (n=69) and overweight group (n=30) . To make the baseline data consistent between the two groups and ensure comparability, 20 matched pairs were generated using a 1∶1 propensity score matching (PSM) method, considering four clinicopathologic factors: age, gender, diameter of tumor and operation scope. In the normal-weight group, there were 18 females and 2 males, aged (32.82±9.51) years (range: 17-53 years) , and there exhibited 18 females and 2 males in the overweight group, aged (35.14±10.63) years (range: 18-55 years) . Results:All patients successfully underwent the operation without conversions to open surgery. After matching, both groups had 2 cases of thyroid adenoma and 18 cases of papillary thyroid carcinoma ( P=1) , with no statistically significant difference in the surgical scope between the two groups ( P=0.376) . There was no statistically significant difference in the mean tumor diameter between the normal-weight group and the overweight group (5.38±1.79 mm vs. 5.61±3.32 mm, P=0.575) . All malignant tumor cases in both groups were classified as T1 stage, and there was no statistically significant difference in N stage ( P=0.186) . All patients with malignant tumors underwent central lymph node dissection, there was no significant difference in the number of central lymph nodes dissected ( P=0.623) and metastatic lymph nodes ( P=0.109) between the two groups. There were no statistically significant differences in operative duration (217.53±62.83 min vs. 220.67±73.73 min, P=0.808) , median postoperative hospital stay [6 (6,7.75) days vs. 6 (6,7) days, P=0.682], or 24-hour drainage volume (78.52±30.49 mL vs. 68.23±29.11 mL, P=0.180) between the normal-weight group and the overweight group. There was no permanent hypoparathyroidism, postoperative hemorrhage, lymphatic fistula, mental nerve injury, postoperative infection in both groups. In both groups, there occurred one case of transient hypoparathyroidism. As for other complications, 1 case of temporary recurrent laryngeal nerve injury and oral tearing occurred in the overweight group, while the normal-weight group had 1 case of skin scald. Conclusions:Among patients who underwent TORT, the overweight group exhibited comparable surgical outcomes and postoperative complications to those in the normal-weight group. TORT is a safe and feasible surgical option for overweight patients, which provides more surgical options for this patient population.

Objective:To investigate the short-term outcome of transoral robotic thyroidectomy.Methods:This is a retrospective case series study. The clinicopathologic characteristics and postoperative results of 107 patients who underwent transoral robotic thyroidectomies in the Department of Thyroid and Breast Surgery of the 960 th Hospital of People′s Liberation Army from May 2020 to August 2023 were retrospectively analyzed. There were 12 males and 95 females, with an age of (31.8±9.4) years (range: 11 to 55 years), including 20 benign tumors and 87 thyroid papillary carcinoma. Postoperative follow-up was carried out through returning visit and telephone, mainly to observe the recovery of postoperative complications, cosmetic effects and recurrence results. Results:All transoral robotic thyroidectomy was successfully completed without conversion to open surgery. The tumor size of thyroid papillary carcinoma patients was (5.6±2.7) mm (range: 2 to 15 mm). Furthermore, central cervical lymph node metastasis was found in 45 cases. The number of central cervical lymph nodes retrieved and metastasized ( M(IQR)) were 11 (8) (range: 3 to 26) and 1 (3) (range: 0 to 13), respectively. There was no recurrent laryngeal nerve injury and permanent hypoparathyroidism. The transient hypoparathyroidism after surgery was 8 cases. Other complications occurred as follows: postoperative infection ( n=1), left submandibular perforation ( n=1), skin scald ( n=1), and perioral numbness ( n=1), oral tear ( n=2). The postoperative stay was 6 (2) days (range: 3 to 11 days). No local lymph node recurrence or metastasis occurred after a follow-up of (22.6±10.0) months (range: 1.0 to 37.4 months). All patients were satisfied with the postoperative cosmetic results, the aesthetic effect score was 9.3 (0.2) (range: 8.4 to 9.6) one month after surgery. Conclusion:For highly screened patients with early thyroid cancer, experienced surgeons can perform a transoral robotic thyroidectomy that has excellent cosmetic results.

Objective:To investigate the short-term outcome of transoral robotic thyroidectomy.Methods:This is a retrospective case series study. The clinicopathologic characteristics and postoperative results of 107 patients who underwent transoral robotic thyroidectomies in the Department of Thyroid and Breast Surgery of the 960 th Hospital of People′s Liberation Army from May 2020 to August 2023 were retrospectively analyzed. There were 12 males and 95 females, with an age of (31.8±9.4) years (range: 11 to 55 years), including 20 benign tumors and 87 thyroid papillary carcinoma. Postoperative follow-up was carried out through returning visit and telephone, mainly to observe the recovery of postoperative complications, cosmetic effects and recurrence results. Results:All transoral robotic thyroidectomy was successfully completed without conversion to open surgery. The tumor size of thyroid papillary carcinoma patients was (5.6±2.7) mm (range: 2 to 15 mm). Furthermore, central cervical lymph node metastasis was found in 45 cases. The number of central cervical lymph nodes retrieved and metastasized ( M(IQR)) were 11 (8) (range: 3 to 26) and 1 (3) (range: 0 to 13), respectively. There was no recurrent laryngeal nerve injury and permanent hypoparathyroidism. The transient hypoparathyroidism after surgery was 8 cases. Other complications occurred as follows: postoperative infection ( n=1), left submandibular perforation ( n=1), skin scald ( n=1), and perioral numbness ( n=1), oral tear ( n=2). The postoperative stay was 6 (2) days (range: 3 to 11 days). No local lymph node recurrence or metastasis occurred after a follow-up of (22.6±10.0) months (range: 1.0 to 37.4 months). All patients were satisfied with the postoperative cosmetic results, the aesthetic effect score was 9.3 (0.2) (range: 8.4 to 9.6) one month after surgery. Conclusion:For highly screened patients with early thyroid cancer, experienced surgeons can perform a transoral robotic thyroidectomy that has excellent cosmetic results.

Objective:To discuss the long-term survival and risk factors of thyroid cancer in the real world in China.Methods:The clinical data of thyroid cancer patients who underwent initial surgery from Apr. 1998 to Dec. 2018 were retrospectively analyzed, including patients’sex, age, surgical records, pathology, hospitalization records and follow-up. According to the prognosis, the patients were divided into disease-free survival group and recurrence/metastasis/death group. Univariate analysis and multivariate regression analysis were conducted to analyze the risk factors affecting the prognosis of thyroid cancer. The clinical features and prognostic risk factors of thyroid cancer patients were investigated.Results:A total of 2038 cases were collected, and the longest follow-up time was more than 20 years. A total of 1876 cases were included in the study, 162 cases were lost, and the rate of follow-up was 7.9%. Among them, 1858 survived, the overall survival rate was 99.04%; 18 died, and the overall mortality rate was 0.96%. According to the prognosis of thyroid cancer, the patients were divided into 2 groups, including 1808 cases in the disease-free survival group and 68 cases in the relapsed-metastatic-death group. The study found that there were statistical differences between the two groups in terms of patients’age [ (45.40±11.016) vs (51.53±15.199, P=0.000) , the male ratio (32.854%, 48.529%, P=0.001) , whether tumor breaks through capsule (20.077%, 33.823%, P=0.006) , central lymph node metastasis (48.834%, 70.588%, P=0.001) and lateral lymph node metastasis (31.084%, 55.882%, P=0.000) , and there was no difference between the number of tumor lesions. Conclusion:Thyroid cancer has a good prognosis, but according to the characteristics of patients with thyroid cancer in my country, it should still be treated early in the clinic, and the standardization and thoroughness of surgery should be adhered to during the treatment.

Objective To explore the environmental factors change on the plasma endothelin(ET) and nitric oxide(NO) in rabbits exposed to a complex environment:high temperature,hunger,and so on.Methods Ninety China rabbits were randomly divided into myocardial ischemia group,myocardial ischemia and hypoxia and high temperature group,myocardial ischemia and hypoxia group,myocardial ischemia and hunger group,myocardial ischemia and hypoxia and high temperature and hunger group,hunger group,hypoxia group,high temperatures group,control group,ten rabbits in each group.The animal myocardial ischemia was caused by fulgurating the left anterior descending branch artery in the heart.The animal hypoxia was caused by breathing in 8.5% nitrogen oxygen atmosphere(nitrogen content was 91.5%,oxygen content was 8.5%).The animals in the high temperature group were put into a high temperature [(42?2)℃] environment.The animals in the hunger group were treated with fasting and water deprivation for 24 h.Every animal has been taken in above-mentioned experiment environment for 30 min.Blood from jugular veins collected,and the contents of plasma ET and NO were determine.Results Compared with control group,except the hunger group and high temperature group,ET levels in the others six group were significantly increased(P

In order to make good use of laboratory opening,the way,method together with the effect of laboratory opening in our college were analyzed and discussed in this paper. The perfect practice effect shows that laboratory opening plays an important role in cultivation for independent research abilities and scientific innovative abilities of undergraduates.

To discuss the course of implementing tutorial system as well as the effect on medical students,and to point out that implementing teacher system is a kind of pattern of training innovation type of medical talents.