Objective To compare diagnostic performance of ultrasound and radionuclide imaging in diagnosis of Meckel's diverticulum.Methods Totally 46 children suspected with Meckel's diverticulum were enrolled.Ultrasound,radionuclide imaging data were analyzed and compared with pathology.Results In 46 children suspected with Meckel's diverticulum,38 cases were confirmed by operation.Thirty-three cases of 38 were diagnosed Meckel's diverticulum by ultrasound,5 cases of 38 were false negative,there was no false positive case.Radionuclide imaging was positive in 24 cases of 46,false positive in 4 eases and false negative in 18 cases.The ultrasound diagnostic accuracy rate was 89.13％ (41/46),sensitivity was 86.84％ (33/38),specificity was 100％ (8/8).Diagnostic accuracy rate of radionuclide imaging was 52.17％ (24/46),sensitivity was 52.63 ％ (20/38) and specificity was 50.00 ％ (4/8).The sensitivity of ultrasound and radionuclide imaging in diagnosis of Meckel's diverticulum had significant difference (P＜0.01).Conclusion Ultrasound in diagnosis of Meckel's diverticulum has advantages of non-invasive,no radiation,acceptable price and high sensitivity.

Objective To explore the diagnosis,treatment and prognosis of neuroblastoma in children. Methods The clinical data of 36 children With neuroblastoma admitted to Department of Pediatric Surgery,Henan Pro﹣vincial People＇s Hospital betWeen August 2013 and August 2018,Were retrospectively analyzed. The patients included 22 males and 14 females With the age of 1 month－13 years old[( 20. 0 ± 18. 5)months]. TWenty－one cases of neu﹣roblastoma originated from the adrenal glands,the other 15 cases from the sympathetic ganglion( including 7 cases in retroperitoneum,6 cases in postmediastinum,and 2 cases in neck). Fifteen patients in loW risk and intermediate risk groups underWent primary surgery before multiple chemotherapy,While other 21 cases in high risk groups underWent chemotherapy until the mass could be removed completely,then continuely underWent multiple chemotherapy. Results Of the 36 patients,23 cases(63. 9%)had a radical resection,13 patients underWent palliative resection and 2 pa﹣tients Were treated With vascular repair during surgery(abdominal aorta in 1 patient,inferior vena cava in 1 patient). TWenty－seven patients had effective in formation and 16 patients survived,during folloW－up,12 patients belonged to stage Ⅰ－Ⅲ disease,2 patients stage Ⅳ disease and 2 patients stage Ⅳs disease,respectively. Four cases underWent re－operation due to disease recurrence,then they underWent chemothearopy,and 3 patients Were survival With tumor. Conclusions Neuroblastoma is a highly malignant pediatric cancer accompanied With a high rate of metastasis on ini﹣tial diagnosis. Radical resection is an effective therapeutic strategy for improving the survival rate. If radical resection is impractical,palliative resection combined With chemotherapy can significantly prolong patients＇ survival time. And a better prognosis is achieved if it can be early diagnosed and treated timely.

Objective:To explore the curative effects of individualized surgical method for treating pyriform sinus fistula (PSF) in children.Methods:A total of 43 PSF children treated in the Department of Pediatric Surgery of Henan Provincial People′s Hospital from June 2015 to November 2019 were selected, with 41 cases on the left side and 2 cases on the right side.There were 27 cases in the quiescent inflammatory infection stage and 16 cases in the acute inflammatory infection stage.According to patients′ condition, low-temperature plasma radiofrequency ablation, fistulectomy, abscess incision and drainage or combined operation were conducted.The postoperative complications and recurrence were observed.Results:Among 43 cases, there were 19 cases treated with low-temperature plasma radiofrequency ablation, 11 cases treated with low-temperature plasma radiofrequency ablation combined with abscess incision and drainage, 5 cases treated with low-temperature plasma radiofrequency ablation combined with fistulectomy, and 8 cases treated with fistulectomy.Four cases had postoperative hoarseness and recovered within 1-5 months.One case occurred pseudo healing after abscess incision and drainage, and healed after incision and debridement.Totally, 4 cases recurred, and the follow-up time was from 3 months to 57 months.Conclusions:Low-temperature plasma radiofrequency ablation has the advantages of minimally invasive, safe and effective, which provides a new treatment for PSF in children.Based on the condition of children, the choice of individualized treatment can significantly improve the curative effects.

Objective:To explore the strategy of selecting the second stage operation after neonatal enterostomy.Methods:Clinical data of 35 cases admitted to the Department of Pediatric Surgery of Henan Provincial People′s Hospital for enterostomy in neonatal period and radical operation in the second stage from May 2014 to December 2019 were subject to retrospective analysis.They were inquired about the medical history in detail before the operation, and received barium enema and colonoscopy, 24-hour delayed radiography, anorectal manometry and other examinations.During the operation, a multi-point intestinal biopsy and rapid frozen pathological examination were performed accor-ding to the individual′s condition, and the specific surgical method was determined in combination with intraoperative exploration.Postoperative observations were conducted for such complications as anastomotic leakage, intestinal obstruction, and abdominal infection, as well as such medium and long-term outcomes as intestinal function recovery, defecation, and nutritional status.Results:Nine cases were diagnosed with neonatal necrotizing enterocolitis (NEC) and received ostomy closure.Sixteen cases were diagnosed with NEC concomitant with intestinal stenosis and received the narrow bowel enterectomy and anastomosis combined with ostomy closure; 10 cases were diagnosed with Hirschsprung′s disease, including 5 cases of total colonic aganglionosis treated with Soave radical operation, 3 cases of long-segment Hirschsprung′s disease treated with subtotal colectomy, inverted ascending coloanal anastomosis with Deloyers method and second enterostomy, and 2 cases of normal-segment Hirschsprung′s disease treated with pull-through operation combined with ostomy closure.After the operation, 1 case had anastomotic leakage and septic shock, 1 case had incision dehiscence, 3 cases had adhesive intestinal obstruction and 1 case occurred left lung consolidation.During a follow-up period of 3-36 months, their recovery condition was acceptable.Conclusions:For those neonates receiving enterostomy, detailed medical history should be enquired before the second stage operation.The combination of barium enema and colonoscopy, 24-hour delayed radiography and multi-point intestinal biopsy with intraoperative exploration conduced to selecting appropriate individualized surgical schemes and reducing surgical complications, thus improving the long-term quality of life of children.

Objective:To explore the application value of 3D printing technology in the precise resection of pediatric retroperitoneal neuroblastoma(NB).Methods:Eleven patients with retroperitoneal NB admitted to the Department of Pediatric Surgery of Henan Provincial People′s Hospital from March 2017 to December 2019 were selected in this study, and all of them received preoperative plain and enhanced computed tomography (CT) scanning of whole abdomen.The original data were imported into the mimics 20 software for processing.The tumor and important peripheral blood vessels were reconstructed with such commands as multi-layer edition, threshold adjustment, regional growth and 3D edition to output the standardized 3D printing stl format file and print out the tumor model by 3D printer.Based on the 3D reconstruction results, the precise surgical planning was performed to determine the optimal operative scheme.The data of all cases were analyzed retrospectively.The parents of these children were investigated by questionnaire and the results were statistically analyzed.Results:All 11 patients successfully underwent the operation under the planning of 3D printing technology.Nine of them had complete tumor resection and 2 cases had palliative resection.The operation time ranged from 140 min to 750 min, with an average of 210 min; the bleeding volume ranged from 100 mL to 1 500 mL, with an average of 240 mL; the postoperative pathological reports revealed that 9 children had NB and 2 cases had ganglioneuroblastoma.There was no case of perioperative death.There were 2 cases of postoperative complications, including 1 case of severe diarrhea with chylous leakage, which was relieved after the treatment of parenteral nutrition and somatostatin, and 1 case of left lower extremity weight-bearing difficulty after left iliac artery anastomosis, which was improved after rehabilitation physical therapy.The follow-up time ranged from 1 month to 30 months.There were 2 cases recurred in the original operation area.One patient received reoperation after chemotherapy; the other continued chemotherapy in progress.As for the 2 cases of palliative resection, they received chemotherapy and survived with tumor.After using 3D model to communicate with children′s parents, their awareness rate of disease, operation mode and postoperative complications were significantly higher than that of CT.Conclusions:3D printing technology can accurately evaluate the structural relationship between retroperitoneal NB and important peripheral blood vessels in children, which contributes to improving the parents′ cognition of the operation mode, and is conducive to selecting the optimal operation scheme and achieving precise tumor resection.