Objective To explore the efficacy and safety of 980 nm diode laser therapy for treatment of benign prostatic hyperplasia (BPH). Methods Data of 170 patients with BPH treated with 980nm diode laser system were reviewed. The mean operative time, blood loss, surgical complications, the international prostate symptom score (IPSS), bladder residual urine volume and flow rate changes were collected and analyzed. Results One hundred and seventy cases were safe during the perioperative period. The average operation time was (74 ± 11) min, surgical removal of prostate tissue mass of (54±12) g, blood loss (72±11) ml. There was no TUR syndrome occurred. 170 patients were followed up 2 to 24 months. The IPSS decreased from preoperative 25.0±5.5 to 9.0±2.5. The maximum flow rate increased from preoperative (6.2±2.3)ml/s to post-operative (17.4±3.5) ml/s. The residual urine volume decreased from preoperative (210.0±25.6) ml to postoperative (25.2±4.6) ml. All the differences were statistically significant (P＜0.05). Conclusion Transurethral vaporization of 980 nm diode laser could be a safe and effective treatment modality for BPH.

Objective:To explore the clinical effect of the 3D printing pre-installed screw channel model in assisting screw placement of single complete segmented congenital hemivertebrectomy.Methods:Clinical data of 13 children treated with single complete segmented congenital hemivertebrectomy in the Department of Spine and Spinal Surgery of Henan Provincial People′s Hospital from August 2016 to January 2019 were retrospectively analyzed.Among them, there were 5 males and 8 females with the mean age of 9.9 (5-14) years.Categorized by the lesion location, 3 cases were located at T 9, 2 cases at T 10, 5 cases at T 11, 1 case at T 12, and 2 cases at L 1.During the operation, the 3D printing pre-installed screw channel model was used to assist the placement of pedicle screws.The accuracy of screw placement was assessed by the postoperative CT.All children were routinely examined by full-length anterior and lateral X-ray of spine in the standing position before and after surgery to measure the Cobb angles at the coronal and sagittal view.Furthermore, the correction rate of scoliosis and kyphosis after surgery and during follow-up was also calculated.The One-Way repeated measures ANOVA was used to compare the Cobb angle of scoliosis and kyphosis before surgery, after surgery and during follow-up. Results:A total of 85 pedicle screws were placed in 13 children, with the accuracy rate of screw placement of 95.3%.The mean surgery time and intraoperative blood loss were (216.9±28.3) min, and (478.5±132.6) mL, respectively.Scoliosis Cobb was corrected from (57.1±12.7)° to (12.7±4.7)° with a correction rate of (78.4±5.9)%, which was (14.2±7.0)° at the last follow-up.Kyphosis angle was corrected from (46.2±8.4)° to (13.2±4.4)° with a correction rate of (72.6±7.0)%, which was (14.0±3.4)° at the last follow-up.None of the children had serious complications like vascular and nerve damage.The mean postoperative follow-up was 12.3 (6-18) months.No significant loss of angle was detected during the follow-up period.There were significant differences in the lateral and kyphotic angles after surgery and during follow-up compared with preoperative ones (all P<0.05). No significant difference was detected between the postoperative lateral and kyphotic angles and those at the last follow-up (all P>0.05). Conclusion:The 3D printing pre-installed screw channel model used to assist screw placement of single complete segmented congenital hemivertebrectomy can improve the precision of screw placement and the orthopedic effect on lateral kyphosis.

Objective:To explore the accuracy and repeatability of the smartphone scoliosis screening APP developed by our team in the measurement of the Cobb angle of adolescent idiopathic scoliosis (AIS).Methods:Clinical data of 60 patients with AIS admitted to Department of Spine and Spinal Surgery, Henan Province People′s Hospital from August 2020 to February 2021 were analyzed retrospectively.Three surveyors measured the coronal main curvature Cobb angle, sagittal thoracic kyphosis (TK) angle, thoracolumbar kyphosis (TLK) angle and lumbar kyphosis (LL) angle on whole-spine lateral X-ray films of 60 patients with AIS by means of the protractor, scoliosis screening APP and computerized Picture Archiving and Communication System (PACS). The time and results of each measurement were recorded.The measurement was repeated once after 2 weeks.Paired t-test was used to compare the measurement time of the APP method and the protractor method.Taking the Cobb angle measurement results of the PACS system as the reference standard, the accuracy of Cobb angle measurement by the APP method was analyzed by paired t-test.The repeatability of the surveyor and the consistency between the surveyors was compared by intraclass correlation coefficient (ICC). Results:Among the 60 patients with AIS, there were 17 males and 43 females, aged from 10 to 16 years [(12.2±2.4) years]. The main bends were thoracic curvature (Lenke Ⅰ) in 23 cases, Lenke Ⅱ in 18 cases and thoracolumbar curvature/lumbar curvature (Lenke V) in 19 cases.The APP method took significantly less time to measure the Cobb angle than the protractor method ( P<0.05). There was no significant difference in the Cobb angle measured by the APP method and PACS method ( P>0.05). The results of the coronal main curvature Cobb angle, TK angle, TLK angle and LL angle measured by 3 surveyors through the APP method were all in good agreement (ICC=0.990, 0.988, 0.986, 0.987). The repeatability (ICC 0.973-0.982) of the coronal main curvature Cobb angle, TK, TLK and LL measured twice before and after the APP method were both better that of the protractor method (ICC 0.933-0.954). Conclusions:Compared with the traditional protractor, the smartphone scoliosis screening APP has the advantages of short measurement time, high efficiency, excellent accuracy and good repeatability in measuring the Cobb angle of AIS.

【Objective】 To investigate the efficacy, safety and feasibility of laparoscopic lymph node dissection guided by indocyanine green (ICG) fluorescence imaging. 【Methods】 A total of 30 patients with muscle-invasive bladder cancer (MIBC, T2/T3NxM0) who were admitled to the Cangzhou People’s Hospital during Mar.2018 and Jun.2022 were included.The lymph nodes were cleared with ICG fluorescence imaging first, and then the remaining lymph nodes were cleared according to the standard pelvic lymph node range.The lymph node positive rate of ICG fluorescence imaging guided laparoscopic lymph node precise dissection and standard pelvic lymph node dissection was analyzed by self-comparison. 【Results】 ICG fluorescence imaging guided laparoscopic lymph node precise dissection needed shorter operation time than standard pelvic lymph node dissection \[(21.80±6.80) min vs.(47.70±10.73) min, P<0.05\].There was no significant difference in the lymph node positive rate between the two approaches \[(11.34±9.06)% vs. (12.36±9.43)%, P>0.05\], but the former approach caused less damage on blood vessels and nerves. 【Conclusion】 Indocyanine green fluorescence imaging guided laparoscopic lymph node dissection has comparable efficacy to standard pelvic lymph node dissection, which can reduce ineffective lymph node dissection, shorten the operation time, and reduce the risk of complications.