Objective:To investigate the clinical effect of lingual mucosal augmentation urethroplasty with non-transecting urethral cavernous anastomosis in the treatment of traumatic urethral stricture.Methods:The clinical data of 39 patients with traumatic urethral stricture admitted to our clinical center from March 2023 to December 2023 were retrospectively analyzed. Their mean age was (49.7±2.0)years. The cause of urethral injury was pelvic fracture in 32 cases, riding injury in 5 cases, and iatrogenic injury in 2 cases. Suprapubic vesicostomy tube was indwelled before operation in 39 cases. There was 1 case with hypospadias and 1 case with urethral false passage. 9 patients had urethral dilatation before surgery, 5 had internal urethrotomy operation, 5 had urethroplasty, and 22 had no history of urethral surgery. The International Erectile Function Index (IIEF-5)score of 39 cases last 1 month before surgery was collected and classified.In which, the IIEF-5 score of 19 cases with no or mild erectile dysfunction was median 20 (18, 23)points, the MSHQ-Ejd score was median 16 (11, 19)points, and the number of effective erections was median 4(3, 5)times on the NPT. And in which, the IIEF-5 score of 20 cases with moderate to severe erectile dysfunction was median 10 (3, 14)points, the MSHQ-Ejd score was median 3(1, 7)points, and the number of effective erections was median 1(0, 2)times on the NPT. All 39 cases underwent non-transecting anastomotic lingual mucosal augmentation urethroplasty. The central tendon of the perineum and the ventral side of the bulbar urethra were preserved through perineal approach. The dorsal side of the urethra was mobilized and through the dorsal side of the urethra, the scar of the urethra was enucleated along the mucosa of the urethra. Then the ventral mucosa of the urethra was anastomosed end to end and the dorsal urethra was repaired by lingual mucosa transplantation. The Clavien-Dindo complication grading system was performed. The catheter was removed 4 weeks after operation, and urine flow rate was recorded 1 month after extubation. IIEF-5 score, MSHQ-Ejd score and NPT were recorded 6 months after operation.Results:The mean operation time of 39 cases was (118.0±18.3)min. 39 cases were followed up for median 8.0(6.0, 10.0)months. The Q max ≥15 ml/s in 24 cases. The Q max <15ml/s in 13 cases, of which, the Q max ≥15 ml/s after 1 internal urethrotomy operation in 10 cases and Q max≥15 ml/s after 2 internal urethrotomy operations in 3 cases. 2 cases were still failed to urinate and Q max≥15 ml/s after end-to-end urethral anastomosis. All 39 cases’ Clavien-Dindo complications were graded Ⅰ.Of the 19 cases with no or mild erectile dysfunction, the IIEF-5 score was median 20(17, 23)points, the MSHQ-Ejd score was median 16(11, 19)points, and the number of effective erections was median 4(3, 4)times on the NPT postoperatively, all were not significantly different from those before operation ( P> 0.05). Of the 20 cases with moderate and severe erectile dysfunction, the IIEF-5 score was median 9(4, 13)points, the MSHQ-Ejd score was median 4(2, 7)points, and the number of effective erections was median 1(0, 2)times on the NPT postoperatively, and all were not significantly different from those before operation ( P>0.05). Conclusions:Non-transecting anastomotic lingual mucosal augmentation urethroplasty is a reliable surgical method with few complications for traumatic urethral stricture. Moreover, the operation has little effect on the sexual function of patients.

OBJECTIVE To establish a combined pharmacokinetic(PK)-pharmacodynamic(PD)model for knee osteoarthritis(KOA)of crossbow drug microemulsion multi-components(benzoylmesaconine,benzoylhypacoitine,mesaconitine,periplocin,neo-chlorogenic acid,vanillic acid,chlorogenic acid),and elucidate the dynamic changes in the KOA rats and the interrelation with the e-lapsed efficacy of the drug.METHODS A KOA rat model was induced by 4%papain;the PK process of crossbow medicine microe-mulsion components in rat synovial fluid was analyzed by UPLC to establish a PK model;the contents of MMP-3,MMP-13,TNF-α and IL-1β in KOA rats at different time points after administration were determined by ELISA analysis to establish a PD model;Phoe-nix WinNonlin software was used to fit the PK and PD data to obtain a PK-PD model.RESULTS PK results showed that the multi-components of the microemulsion were slowly absorbed in the joint cavity and gradually reached the peak value within 3-5 h.The Cmax of benzoylmesaconine,benzoylhypacoitine mesaconitine,periplocoside,neochlorogenic acid,vanillic acid and chlorogenic acid were 1.23,1.48,1.62,4.67,0.93,1.25 and 2.35 μg·mL-1,respectively;the area under the drug-time curve(AUC0-11)was 2.58,4.04,3.54,12.15,2.51,2.41 and 4.11 h·μg·mL-1,respectively.PD results showed that at different time points after adminis-tration,the contents of MMP-3,IL-1β,TNF-α,and MMP-13 decreased to varying degrees,among which MMP-3 decreased insig-nificantly,with significant differences only at 6 h;the contents of the remaining IL-1β,TNF-α,and MMP-13 decreased significantly(P<0.05,P<0.01),and showed the phenomenon of lagged efficacy;the PK-PD binding model showed that the drug concentration of the multi-component drug in the crossbow medicine microemulsion could be well fitted with its drug efficacy data.CONCLUSION The established PK-PD binding model can predict the drug efficacy changes after administration,and provides a corresponding refer-ence for the crossbow medicine microemulsion treatment of KOA.

OBJECTIVE To establish a combined pharmacokinetic(PK)-pharmacodynamic(PD)model for knee osteoarthritis(KOA)of crossbow drug microemulsion multi-components(benzoylmesaconine,benzoylhypacoitine,mesaconitine,periplocin,neo-chlorogenic acid,vanillic acid,chlorogenic acid),and elucidate the dynamic changes in the KOA rats and the interrelation with the e-lapsed efficacy of the drug.METHODS A KOA rat model was induced by 4%papain;the PK process of crossbow medicine microe-mulsion components in rat synovial fluid was analyzed by UPLC to establish a PK model;the contents of MMP-3,MMP-13,TNF-α and IL-1β in KOA rats at different time points after administration were determined by ELISA analysis to establish a PD model;Phoe-nix WinNonlin software was used to fit the PK and PD data to obtain a PK-PD model.RESULTS PK results showed that the multi-components of the microemulsion were slowly absorbed in the joint cavity and gradually reached the peak value within 3-5 h.The Cmax of benzoylmesaconine,benzoylhypacoitine mesaconitine,periplocoside,neochlorogenic acid,vanillic acid and chlorogenic acid were 1.23,1.48,1.62,4.67,0.93,1.25 and 2.35 μg·mL-1,respectively;the area under the drug-time curve(AUC0-11)was 2.58,4.04,3.54,12.15,2.51,2.41 and 4.11 h·μg·mL-1,respectively.PD results showed that at different time points after adminis-tration,the contents of MMP-3,IL-1β,TNF-α,and MMP-13 decreased to varying degrees,among which MMP-3 decreased insig-nificantly,with significant differences only at 6 h;the contents of the remaining IL-1β,TNF-α,and MMP-13 decreased significantly(P<0.05,P<0.01),and showed the phenomenon of lagged efficacy;the PK-PD binding model showed that the drug concentration of the multi-component drug in the crossbow medicine microemulsion could be well fitted with its drug efficacy data.CONCLUSION The established PK-PD binding model can predict the drug efficacy changes after administration,and provides a corresponding refer-ence for the crossbow medicine microemulsion treatment of KOA.

Objective:To investigate the clinical effect of lingual mucosal augmentation urethroplasty with non-transecting urethral cavernous anastomosis in the treatment of traumatic urethral stricture.Methods:The clinical data of 39 patients with traumatic urethral stricture admitted to our clinical center from March 2023 to December 2023 were retrospectively analyzed. Their mean age was (49.7±2.0)years. The cause of urethral injury was pelvic fracture in 32 cases, riding injury in 5 cases, and iatrogenic injury in 2 cases. Suprapubic vesicostomy tube was indwelled before operation in 39 cases. There was 1 case with hypospadias and 1 case with urethral false passage. 9 patients had urethral dilatation before surgery, 5 had internal urethrotomy operation, 5 had urethroplasty, and 22 had no history of urethral surgery. The International Erectile Function Index (IIEF-5)score of 39 cases last 1 month before surgery was collected and classified.In which, the IIEF-5 score of 19 cases with no or mild erectile dysfunction was median 20 (18, 23)points, the MSHQ-Ejd score was median 16 (11, 19)points, and the number of effective erections was median 4(3, 5)times on the NPT. And in which, the IIEF-5 score of 20 cases with moderate to severe erectile dysfunction was median 10 (3, 14)points, the MSHQ-Ejd score was median 3(1, 7)points, and the number of effective erections was median 1(0, 2)times on the NPT. All 39 cases underwent non-transecting anastomotic lingual mucosal augmentation urethroplasty. The central tendon of the perineum and the ventral side of the bulbar urethra were preserved through perineal approach. The dorsal side of the urethra was mobilized and through the dorsal side of the urethra, the scar of the urethra was enucleated along the mucosa of the urethra. Then the ventral mucosa of the urethra was anastomosed end to end and the dorsal urethra was repaired by lingual mucosa transplantation. The Clavien-Dindo complication grading system was performed. The catheter was removed 4 weeks after operation, and urine flow rate was recorded 1 month after extubation. IIEF-5 score, MSHQ-Ejd score and NPT were recorded 6 months after operation.Results:The mean operation time of 39 cases was (118.0±18.3)min. 39 cases were followed up for median 8.0(6.0, 10.0)months. The Q max ≥15 ml/s in 24 cases. The Q max <15ml/s in 13 cases, of which, the Q max ≥15 ml/s after 1 internal urethrotomy operation in 10 cases and Q max≥15 ml/s after 2 internal urethrotomy operations in 3 cases. 2 cases were still failed to urinate and Q max≥15 ml/s after end-to-end urethral anastomosis. All 39 cases’ Clavien-Dindo complications were graded Ⅰ.Of the 19 cases with no or mild erectile dysfunction, the IIEF-5 score was median 20(17, 23)points, the MSHQ-Ejd score was median 16(11, 19)points, and the number of effective erections was median 4(3, 4)times on the NPT postoperatively, all were not significantly different from those before operation ( P> 0.05). Of the 20 cases with moderate and severe erectile dysfunction, the IIEF-5 score was median 9(4, 13)points, the MSHQ-Ejd score was median 4(2, 7)points, and the number of effective erections was median 1(0, 2)times on the NPT postoperatively, and all were not significantly different from those before operation ( P>0.05). Conclusions:Non-transecting anastomotic lingual mucosal augmentation urethroplasty is a reliable surgical method with few complications for traumatic urethral stricture. Moreover, the operation has little effect on the sexual function of patients.

Objective:To summarize the ideal strategy for the treatment of female hypospadias.Methods:The data of 12 female patients with hypospadias admitted to the Sixth People's Hospital Affiliated to Shanghai Jiaotong University School of Medicine from December 2011 to December 2019 were retrospectively analyzed. The patients was (31.0±16.6) years old (7-67 years old). Among them, 3 cases had a history of pelvic fracture trauma, 3 cases had a history of birth trauma, and the remaining 6 cases had no history of trauma and surgery. Among them, there were 6 cases of congenital hypospadias and 6 cases of acquired hypospadias. The clinical manifestations were urinary incontinence in 6 cases and dysuria in 6 cases. Examination of the normal position of the external opening of the genital urethra did not show the opening of the urethra, but moved down to different parts of the anterior wall of the vagina. All patients underwent urethral lengthening. For congenital hypospadias, the urethral plate is used to cut the coiled tube during the operation to prolong the urethra. For acquired hypospadias, the stenotic urethra was enlarged and lengthened with a labial pedicled flap coil. The subcutaneous fat pad of the labia majora was mobilized and transferred to the outside of the newly constructed urethra to prevent the occurrence of urethro-vaginal fistula and increase the pressure of the urethra. Five patients with significant urinary incontinence underwent bladder neck reconstruction at the same time. Anatomical success of the procedure was defined as the appearance of a normal-shaped external urethral opening beneath the clitoris. Functional success was defined as the absence of moderate to severe urinary incontinence after surgery, and the maximum urinary flow rate was >15ml/s during the 12-month follow-up period.Results:All operations were successfully completed. All patients had no perioperative complications, and were followed up for 18-96 months, with an average of 57.3±32.5 months. All patients were able to urinate spontaneously after operation, 4 cases of urinary incontinence disappeared, and 2 cases improved significantly; 4 cases of patients with strenuous urination urinated smoothly. The remaining 2 cases still complained of dysuria after operation, which was solved by subsequent urethral dilatation. The anatomical repair success rate was 100.0%(12/12) and the functional success rate was 83.3% (10/12).Conclusions:Urethral lengthening is an effective method for female hypospadias. The pedicled fat pad helps to increase urethral pressure and prevent fistulas. For female patients with hypospadias and severe urinary incontinence, bladder neck reconstruction is an ideal method. of the technique.

【Objective】 To evaluate the safety and efficacy of transobturator bulbourethral suspension with modified four-armed pelvic sling for post-prostatectomy incontinence (PPI). 【Methods】 The clinical data of 78 male PPI patients treated during Jan.2012 and Dec.2017 in our hospital were collected. The incontinence quality of life (I-QOL) score, daily use of urine pad, 1-hour urine pad test, residual urine volume (RUV), and maximum flow rate (Qmax) were assessed before and after surgery. 【Results】 The total success rate was 79.5%, of which the cure rate was 56.4% and the improvement rate was 23.1%. The preoperative I-QOL score was (54.6±3.9), daily use of urinary pad was (3.6±0.7), and increase in weight of the 1-hour urine pad test was (33.6±5.0) g. Three years after surgery, the I-QOL score was (80.4±5.7), daily use of a urinary pad was (1.9±0.4), and increase in weight of the 1-hour urine pad test was (7.4±1.3) g. Compared to preoperative status, the I-QOL score, daily use of urine pad, and increase in weight of the 1-hour urine pad test 3 years after surgery improved significantly (P<0.05). During the mean follow-up of (61.4±20.5) months, no significant changes in the I-QOL score, daily use of a urinary pad, 1-hour urinary pad test, RUV or Qmax were observed, and no complications occurred. 【Conclusion】 Transobturator bulbourethral suspension with modified four-armed pelvic sling is an effective and safe procedure to treat post-prostatectomy incontinence. The long-term efficacy is satisfactory.

Objective:To explore the effects of multimodal imaging on the performance of automatic segmentation of glioblastoma targets for radiotherapy based on a deep learning approach.Methods:The computed tomography (CT) images and the contrast-enhanced T1 weighted (T1C) sequence and the T2 fluid attenuated inversion recovery (T2- FLAIR) sequence of magnetic resonance imaging (MRI) of 30 patients with glioblastoma were collected. The gross tumor volumes (GTV) and their corresponding clinical target volumes CTV1 and CTV2 of the 30 patients were manually delineated according to the criteria of the Radiation Therapy Oncology Group (RTOG). Moreover, four different datasets were designed, namely a unimodal CT dataset (only containing the CT sequences of 30 cases), a multimodal CT-T1C dataset (containing the CT and T1C sequences of 30 cases), a multimodal CT-T2-FLAIR dataset (containing the CT and T2- FLAIR sequences of the 30 cases), and a trimodal CT-MRI dataset (containing the CT, T1C, and T2- FLAIR sequences of 30 cases). For each dataset, the data of 25 cases were used for training the modified 3D U-Net model, while the data of the rest five cases were used for testing. Furthermore, this study evaluated the segmentation performance of the GTV, CTV1, and CTV2 of the testing cases obtained using the 3D U-Net model according to the indices including Dice similarity coefficient (DSC), 95% Hausdorff distance (HD95), and relative volume error (RVE).Results:The best automatic segmentation result of GTV were achieved using the CT-MRI dataset. Compared with the segmentation result using the CT dataset (DSC: 0.94 vs. 0.79, HD95: 2.09 mm vs. 12.33 mm, and RVE: 1.16% vs. 20.14%), there were statistically significant differences in DSC ( t=3.78, P<0.05) and HD95 ( t=4.07, P<0.05) obtained using the CT-MRI dataset. Highly consistent automatic segmentation result of CTV1 and CTV2 were also achieved using the CT-MRI dataset (DSC: 0.90 vs. 0.91, HD95: 3.78 mm vs. 2.41 mm, RVE: 3.61% vs. 5.35%). However, compared to the CT dataset, there were no statistically significant differences in DSC and HD95 of CTV1 and CTV2 ( P>0.05). Additionally, the 3D U-Net model yielded some errors in predicting the upper and lower bounds of GTV and the adjacent organs (e.g., the brainstem and eyeball) of CTV2. Conclusions:The modified 3D U-Net model based on the multimodal CT-MRI dataset can achieve better segmentation result of glioblastoma targets and its application potentially benefits clinical practice.

Objective:To analyze the risk factors for postoperative pulmonary venous obstruction after correction of total anomalous pulmonary venous connection(TAPVC).Methods:We retrospectively reviewed all patients undergoing operative repair of TAPVC in our institution from December 2013 to January 2018. Patients with functionally univentricular circulations or atrial isomerism were excluded. Patients were divided into two groups according to whether there was pulmonary vein obstruction. The clinical variables of the two groups were compared. Variables for the multivariable analysis were chosen if there was statistical significance on univariable analysis.Results:145 patients were included, 91(63%) males, aged 4(2, 8)months and weight 5.5(4.5, 7.5)kg. Mean follow-up interval was(51±23) months. Postoperative obstruction developed in 27 patients(18.6%). The differences of anatomic type[supracardiac 18(67%) vs.59(50%), cardiac 4(15%) vs. 50(42%), infracardiac 3(11%) vs. 1(1%), mixed 2(7%) vs. 8(7%), P=0.003], preoperative obstruction[yes 19(70%) vs. 37(31%), no 8(30%) vs. 81(69%), P<0.001], associated cardiac lesions[yes 13(48%) vs. 27(23%), no 14(52%) vs. 91(77%), P=0.008] and bypass time[109(89, 129)min vs. 88(70, 110)min, P=0.002] between two groups were statistical significant. A multivariable model showed preoperative obstruction( P<0.001) and bypass time( P=0.009) were associated with postoperative obstruction. Conclusion:The incidence of pulmonary vein obstruction after correction of TAPVC was still high. If there was preoperative obstruction, or the bypass time was too long during operation, the surveillance of pulmonary vein obstruction should be strengthened after operation.

Objective:To investigate the characteristics and the management of male genital lichen sclerosus (MGLSc)accompanied by urethral carcinoma.Methods:A retrospective analysis was performed on 16MGLSc accompanied by urethral carcinoma patients who were referred to Shanghai Sixth People’s Hospital between June 2000 and August 2019. The average age was 53.7 (45-69) years. All of the patients had a mean history of MGLSc 15(6-35) years, anterior urethral stricture received urethral dilatation and other inappropriate urethrotomy treatment for 10 (8-15) years. There were 5 cases of solid mass 4.5 (3-7) cm in scrotum, accompanied by obviously pain. There were 11 cases of infective masses 6(4-10)cm in the perineum, and the masses were ulcerated with purulent secretions and residue-like pus mixed with necrotic tissues draining from the wounds. Urethrocutaneous fistula developed in 9 cases, and the secretions in the fistula cannot heal. The diseased tissue was confirmed by pathology as the metastasis of invasive urothelial carcinoma in 12 patients and urethral squamous cell carcinoma in 4 patients. 9 cases of tumor invaded corpus spongiosum or corpus cavernosum, 5 cases invaded corpus spongiosum or corpus cavernosum, with enlarged firm one side inguinal node. 2 cases of tumor invaded corpus cavernosum, beyond prostatic capsule and bladder neck, bilateral palpable inguinal lymph nodes metastasis were found, one case found tumor involved the left testis. 9 cases were T 2-3N 0M 0, 5 cases T 2-3N 1M 0, 1 case T 3N 2M 0, 1 case T 4N 2M 1. 5 patients with substantial tumors located in the scrotum, penile-sparing scrotum tumor, urethral tumor resection and urethrostomy was performed in 2 patients. Partial phallectomy, urethral tumor resection and perineal urethrostomy were performed in 3 patients. 11 patients with urethral cancer complicated with perineal infectious mass, 2 patients underwent extensive resection of the tumor and suprapubic cystostomy. 8 cases with perineal tumor infection complicated with urethrocutaneous fistulas formation, of which 2 patients received perineal mass, urethral tumor, fistula resection and suprapubic cystostomy, 4 patients with unilateral inguinal lymph node metastasis and received perineal mass, urethral tumor, fistula, lymph node resection and suprapubic cystostomy. 2 patients with bilateral inguinal node metastasis underwent total phallectomy and urethrectomy, inguinal lymph node resection and suprapubic cystostomy. One case of perineal infectious mass with urethral cutaneous fistula and unilateral inguinal lymph node metastasis (T 2-3N 1M 0) gave up tumor resection. Results:The pathological examination of surgical resection of the glans and urethra showed typical MGLSc manifestations as epithelial keratinization, basal cell vacuoles degeneration, dermis lymphocyte infiltration. The pathological examination of the surgical excised diseased urethra and surrounding tumor tissue showed invasive urothelial carcinoma in 12 patients. Immunohistochemical staining showed positive expression of P53, Ki-67 and GATA3. 4 patients of urethral squamous carcinoma and immunohistochemical staining showed positive expression of Ki-67, P40 and GATA3. All patients received cisplatin combined with gemcitabine chemotherapy for an average of 4.8 (2-6)courses and received local radiotherapy (50-70Gy/5w). The mean postoperative survival time of the 16 patients was 26 (3-48) months, and the survival time of urethral transitional cell carcinoma and squamous cell carcinoma was 29 (18-48) months and 18 (3-24) months, respectively. All patients died of tumor metastasis, with 6 patients of lung metastsis, 2 patients of lumbar and bone metastasis, 3 patients of liver metastasis, 2 patients of brain metastasis and 3 patients of lung combined with bone metastasis.Conclusions:MGLSc can cause urethal stricture and urethral carcinoma. The clinical manifestations are dysuria, urinary tumor, repeated infection and urethral fistula. Tumor excision and urinary diversion are common surgical methods. Urethral transitional cell carcinoma and squamous cell carcinoma are common pathological types. Postoperative combined radiotherapy and chemotherapy can be used, but the overall prognosis is poor.

Objective:To evaluate the results of butterfly cartilage myringoplasty for anterior quadrant tympanic perforation under endoscope.Methods:Thirty-eight patients with anterior quadrant tympanic perforations who were subjected to endoscopic butterfly cartilage myringoplasty from April 2016 to October 2018 were included in this study, including 16 males and 22 females, with an average age of (34.5±14.2) years. The patients were reviewed retrospectively, and the pre-and post-operative pure tone audiometry (PTA) thresholds, pre-and post-operative air-bone gaps (ABG), post-operative graft success rates and complications were evaluated. SPSS 23.0 was used to analyze data.Results:Mean post-operative follow-up duration was (9.4±3.1) months (range 6-18 months). The graft survival rate was 94.7% (36/38) . The preoperative and postoperative mean PTA was (30.9±8.9) dB HL and (21.4±7.7) dB HL respectively. Preoperative and postoperative mean ABG was (18.4±6.3) dB and (10.8±6.0) dB respectively. There was significant difference between pre-and postoperative PTA and ABG ( t=5.353 and 4.162, P<0.05 for both). A postoperative ABG reduction of (8.3±1.5) dB was reached. Two (4.7%) patients had postoperative myringitis, two (4.7%) had recurrent perforation, and one (2.4%) had lateral healing of transplanted tympanic membrane in the postoperative follow-ups. No intratympanic cholesteatoma was observed. Conclusions:Endoscopic butterfly inlay myringoplasty is a reliable, minimally invasive alternative method to repair anterior tympanic membrane perforations, with high closure rate and low risk of complications.