Expanding the clinical spectrum of Coffin-Siris syndrome with Anorectal Malformations: case report and review of the literature

Anorectal malformations (ARMs) represent a wide spectrum of congenital anomalies of the anus and rectum, of which more than half are syndromic. Their etiology is highly heterogeneous and still poorly understood. We report a 4-year-old girl who initially presented with an isolated ARM, and subsequently developed a global developmental delay as part of an ARID1B-related Coffin-Siris syndrome (CSS). A co-occurrence of ARMs and CSS in an individual by chance is unexpected since both diseases are very rare. A review of the literature enabled us to identify 10 other individuals with both CSS and ARMs. Among the ten individuals reported in this study, 8 had a variant in ARID1A, 2 in ARID1B, and 1 in SMARCA4. This more frequent than expected association between CSS and ARM indicates that some ARMs are most likely part of the CSS spectrum, especially for ARID1A-related CSS.

Expansion of the core features of VACTERL association to include genital anomalies

Genital anomalies have been reported with VACTERL association but not considered a core feature. Acute and chronic complications stemming from unrecognized genital anomalies have been reported in adolescents and young adults with VACTERL association. We sought to determine the frequency and severity of genital anomalies in VACTERL patients and identify which core features were more frequently associated with genital anomalies. A retrospective chart review from January 2010 to October 2021 identified 211 patients with two or more core VACTERL features, 34% of whom had a genital anomaly. The majority of genital anomalies (83% of those in males and 90% in females) were classified as functionally significant (requiring surgical intervention or causing functional impairment). The frequency of genital anomalies in the VACTERL cohort was higher if anorectal malformations or renal anomalies were present in both males and females and if vertebral anomalies were present in females. Due to their functional significance, genital anomalies should be assessed in all patients with two or more core features of VACTERL association, especially in those with anorectal or renal anomalies. Most genital anomalies in males will be detected on physical examination but additional investigation is often needed to detect genital anomalies in females. The timing and type of investigation are subjects for future study.

Triplication of the Sigmoid: A Rare Incidental Finding in Association With an Anorectal Malformation During Colostomy Closure

This case report presents a rare occurrence of triplication of the sigmoid, an unusual congenital anomaly, in a nine-month-old male with a known history of anorectal malformation. The patient, previously diagnosed with anal atresia and a rectourethral (prostatic) fistula, was admitted for the closure of his divided sigmoidostomy as the final step in correcting his anorectal malformation. Unexpectedly, during the release of the distal stoma, the presence of three distinct bowel lumens was discovered. To discern the native bowel, catheters were introduced into each lumen before proceeding with the excision of the triplicated sigmoid and subsequent stoma closure. This case underscores the complexity of diagnosing and managing unusual GI anomalies in the context of anorectal malformations, emphasizing the challenges encountered during surgical interventions.

Penile Agenesis Associated with Anorectal Malformation and Bilateral Renal Agenesis: A Case Report and a Review of the Literature

ABSTRACT

Penile agenesis is complete absence of the penis in an otherwise normal phenotypic and genotypic male at birth that results from failure of development of the genital tubercle. It is an extremely rare anomaly that may be associated with anomalies in other organ systems, the extent and severity of which may affect the prognosis. The management is challenging and may have far reaching implications for the individual and family. While gender reassignment with bilateral orchidectomy and feminising genitoplasty has been carried out for most patients, significant psychosexual and social issues related to the male identity may occur due to foetal or postnatal sex steroid imprinting. We report a neonate with penile agenesis with bilateral renal agenesis and anorectal malformation.

Treatment Strategy for Currarino Syndrome Complicated With Anorectal Stenosis

PURPOSE

The present study aimed to review the treatment experience and outcomes of Currarino syndrome (CS) complicated with anorectal stenosis to evaluate the current treatment strategies.

METHODS

Seven cases of CS complicated with anorectal stenosis, treated at our hospital between 1998 and 2021, were retrospectively investigated. This is a case series article from a single institution.

RESULTS

In six and three cases and one case, the presacral mass was a mature teratoma, meningocele, and lipoma, respectively. Resection of the lesion was performed in all six cases of mature teratoma, and duraplasty was performed before resection in all three cases of meningocele. Moreover, surgery for anorectal stenosis was performed simultaneously in four patients. Surgery was performed for six cases of anorectal stenosis, with the remaining case relieved by dilation using a metal bougie. The surgical methods used were a partial resection with end-to-end anastomosis, anorectal strictureplasty, pull-through, posterior sagittal anorectoplasty, and cutback after mass resection. Pathological analysis of the anorectal stenoses revealed disorganized and rough smooth muscle fibers and the replacement of the stroma by an increased quantity of collagen fibers.

CONCLUSIONS

The clinical outcomes of CS can be improved by establishing a treatment flow chart and understanding the complicated pathophysiology of the disease.

Laparoscopic-assisted anorectoplasty for anorectal malformation with rectobulbar fistula: A two-center comparative study with posterior sagittal anorectoplasty

Due to the controversy on the feasibility of laparoscopic-assisted anorectoplasty (LAARP) for the treatment of the anorectal malformation (ARM) with rectobulbar fistula (RBF), this study aimed to compare the outcomes of LAARP and posterior sagittal anorectoplasty (PSARP) for ARM with RBF. Demographic data, postoperative complications, and bowel function of RBF patients who underwent LAARP and PSARP at 2 medical centers from 2016-2018 were retrospectively reviewed. Eighty-eight children with RBF were enrolled, including 43 in the LAARP group and 45 in the PSARP group. There were no significant differences in the sacral ratio (P = .222) or sacral agenesis (P = .374). Thirty-seven and 38 patients in the LAARP and PSARP groups were followed up for a median of 4.14 years. The postoperative complications were comparable between the groups (P = .624), with no cases of urethral diverticulum. The urination of all cases was normal and no evidence of cyst formation was found on MCU or MRI during the follow-up period. The incidence of rectal prolapse was similar between the 2 groups (9.3% vs 17.8%, P = .247). The groups had equivalent Bowel Function Score (15.29 ± 2.36 vs 15.58 ± 2.88, P = .645), but the LAARP group had better voluntary bowel movement (94.6% vs 84.2%, P = .148) by Krickenbeck classification. The intermediate-term outcomes of LAARP show that the urethral diverticulum was rare by the intraluminal incision of the fistular and the bowel function was comparable to that of PSARP in ARM with rectobulbar fistula. However, LAARP was associated with smaller perineal wounds.

Laparoscopic-Assisted Anorectoplasty for Anorectal Malformation With Recto-Prostatic Urethral Fistula: A Case Report and Review of the Literature

Congenital recto-urethral fistula is the most common form of anorectal malformation found in boys. The final repair includes the ligation of the fistula and the anorectoplasty, and can be achieved either way: posterior sagitally or laparoscopically. We present a case of a term male infant diagnosed with anorectal malformation and recto-prostatic urethral fistula, that underwent a laparoscopic-assisted posterior sagittal anorectoplasty in our department.

Anorectal Malformations and Late-Term Problems

Anorectal malformation is a disease with different subtypes and anatomical and functional multisystemic involvement that requires a unique approach in each age group. Anomalies associated with vertebral defects, anal atresia, cardiac defects, tracheo-esophageal fistula, renal anomalies, and limb abnormalities (VACTERL) association require detailed investigation and management. Beginning from the neonatal period, treatment is carried out with different surgical procedures. The clinical course of these patients may be associated with medical problems, accompanying congenital anomalies, perioperative management, or late sequelae. Constipation and fecal-urinary incontinence are the most common problems encountered in long-term follow-up. Renal failure is the most important cause of long-term mortality. In addition, these patients need to be under control until adulthood due to cardiological, spinal, genital, gynecological, and endocrine problems. In this follow-up, many pediatric disciplines such as neonatal intensive care, cardiology, nephrology, gastroenterology, and endocrinology cooperate with pediatric surgeons and pediatric urologists.

Obstructive Uropathy Caused by Massive Fecal Impaction in a Patient With Congenital Anorectal Malformation and Neurogenic Bladder

Anorectal malformations (ARMs) comprise a broad spectrum of congenital anomalies involving both anorectal and urogenital tracts. After diagnosis, urological problems should be evaluated in addition to surgical correction of ARMs. Commonly encountered urological problems in patients with ARMs are recurrent urinary tract infections, vesicoureteral reflux, and chronic kidney disease. Therefore, the proper timing of urination and appropriate defecation habits are essential for preserving renal function in patients with ARMs. Here, we report a case of acute hydronephrosis by severe stool impaction in a patient with a history of congenital ARMs and neurogenic bladder. In this case, the physicians should consider properly managing chronic constipation and urination in patients with ARMs despite successful surgical corrections.

Multidisciplinary strategies for managing acute watery diarrhea in children with congenital anorectal malformation and colostomy: A case study

Congenital anorectal malformation (ARM) is a diverse group of anomalies affecting the development of the anal and rectal regions, with an estimated incidence of one in every 5000 live births. The colostomy is commonly performed as part of the staged management of children with ARM to prevent complications. However, the presence of acute watery diarrhea in children with ARM and colostomy poses significant management challenges due to the altered anatomy and physiology affecting stool regulation and absorption, exacerbated by various factors including infections, dietary issues, medication side effects, and underlying gastrointestinal complications.This case study explores the complexities involved in managing acute watery diarrhea in children with congenital ARM and colostomy. A comprehensive literature review was conducted to examine the existing evidence on the subject. The study highlights the multidisciplinary approach required, involving pediatricians, surgeons, and other specialists, to provide comprehensive care and support for these children. Effective management of acute watery diarrhea in children with congenital ARM and colostomy necessitates collaboration between pediatricians and surgeons. Pediatricians play a crucial role in assessing hydration status, monitoring electrolyte balance, and providing appropriate fluid and nutritional management. Surgeons address the surgical aspects of care and coordinate interventions with the management of acute diarrhea. The study underscores the importance of a multidisciplinary approach to deliver comprehensive care, optimize outcomes, and improve the quality of life for affected children. The management of acute watery diarrhea in children with congenital ARM and colostomy presents significant challenges due to the complex interplay of anatomical, physiological, and clinical factors. A multidisciplinary approach involving pediatricians, surgeons, and other specialists is vital for providing comprehensive care and support. This case study emphasizes the need for further research, guidelines, and collaborative efforts to enhance the management strategies for this vulnerable population.

Labeling male anorectal malformations: objective evaluation of radiologic imaging before surgery

Purpose

Prone cross-table lateral x-ray (CTLxR) and colostogram aid surgical planning for anorectal malformations (ARMs) without perineal fistulas. We suggest objective imaging tools to classify ARMs.

Methods

Three observers prospectively evaluated CTLxR and colostograms of male ARM patients (2012-2022) without perineal fistulas. The level of the rectal pouch was estimated with pubococcygeal (PC) and ischiatic (I) lines. On CTLxR, we described the "pigeon sign", defined as the rectal pouch ending with a beak-like image, suspicious for a rectourinary fistula. ARM was defined as rectobulbar when the rectal pouch was below the I line, rectoprostatic when between PC and I lines, and rectovesical when above the PC line. Concordance was assessed with Fleiss' kappa. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the "pigeon sign" were calculated.

Results

Thirteen patients were included in this study. The interobserver agreement on CTLxR was 69.2% (k = 0.54) on pouch ending, 84.6% (k = 0.69) on the "pigeon sign", and 76.9% (k = 0.69) on diagnosis; concordance between observers and intraoperative diagnosis was 66.6% (k = 0.56). The "pigeon sign" had 75% sensitivity, 100% specificity, 100% PPV, and 50% NPV. The interobserver agreement on colostograms was 84.6% (k = 0.77) on pouch ending and 89.7% (k = 0.86) on diagnosis; concordance between observers and intraoperative diagnosis was 92.3% (k = 0.90).

Conclusion

PC and I lines and the "pigeon sign" are useful tools in examining CTLxR and colostograms. Adequate CTLxR interpretation may modify surgical strategy.

Anorectal malformation combined with Hirschsprung's disease: a case report

Anorectal malformation (ARM) and Hirschsprungs disease (HSCR) are frequently associated with other congenital malformations, but rarely with one another. We describe the case of a child with intermediate anorectal malformation who underwent ARM correction. This child experienced recurrent postoperative symptoms, including intestinal obstruction, nutrition intolerance, and weight loss. The child was diagnosed with Hirschsprung's disease by colon barium contrast and pathological findings from a rectal biopsy, and subsequently underwent pull -through procedure after conservative treatment failed. After six months of postoperative follow-up, the patient still experiences occasional episodes of enteritis, but the symptoms are substantially less severe than they were before surgery, and the patient's weight is slowly increasing. We described a case of a child who had ARM combined with HSCR. Although the association between ARM and HSCR is uncommon, severe constipation or enteritis following complete correction of ARM in the absence of anal stricture should prompt consideration for HSCR. Before the second stage of ARM surgery, pay close attention to the barium enema examination, as an abnormal shape may indicate the presence of HSCR.

State of the Art Bowel Management for Pediatric Colorectal Problems: Anorectal Malformations

Up to 79% of patients with anorectal malformations (ARMs) experience constipation and/or soiling after a primary posterior sagittal anoplasty (PSARP) and are referred to a bowel management program. We aim to report the recent updates in evaluating and managing these patients as part of the manuscript series on the current bowel management protocols for patients with colorectal diseases (ARMs, Hirschsprung disease, functional constipation, and spinal anomalies). The unique anatomic features of ARM patients, such as maldeveloped sphincter complex, impaired anal sensation, and associated spine and sacrum anomalies, indicate their bowel management plan. The evaluation includes an examination under anesthesia and a contrast study to exclude anatomic causes of poor bowel function. The potential for bowel control is discussed with the families based on the ARM index calculated from the quality of the spine and sacrum. The bowel management options include laxatives, rectal enemas, transanal irrigations, and antegrade continence enemas. In ARM patients, stool softeners should be avoided as they can worsen soiling.

Evaluating the utility of cystoscopy, distal colostography, and sonography for locating the fistula in patients with anorectal malformation: a case series

Anorectal malformations are congenital conditions ranging from a simple perianal fistula to a complex cloacal malformation. Since the precise determination of the location of the fistula is the central pillar in choosing the type of surgery, this study aims to evaluate and compare the efficacy of three techniques, transperineal ultrasound, distal colostography, and cystoscopy.

Materials and methods

This study was performed on patients with anorectal abnormalities who had undergone decompressive colostomy and were planned for anorectoplasty in the period from September 2017 to March 2019 in a pediatric surgical center. To answer our question, all three mentioned methods were conducted before the surgery and were compared with the intraoperative findings.

Results

Sonography, distal colostography, and the second cystoscopy findings were similar to intraoperative conclusions concerning the presence of a fistula in patients, whereas blind cystoscopy had 30% accuracy and similarity. Regarding the type of fistula sonography, distal colostography, and second cystoscopy each had 50, 37.5, and 10 inconsistency with the intraoperative findings. In all cases where a fistula was detected in blind cystoscopy, the location of the fistula was correctly determined by this modality. Data analysis on the pouch to perineum distance measurements obtained from sonography and colostography were significantly different from that of surgery.

Conclusion

The results of this study emphasize the need to perform several diagnostic modalities to determine the location and type of fistula to improve diagnostic accuracy.

Rectal Atresia Treated Via a Transanal and Posterior Sagittal Approach: A Report of Two Cases

Rectal atresia is a rare cause of bowel obstruction in neonates with a normal-appearing anus. We present two different types of rectal atresia requiring different surgical management. Case one was a one-day-old term male with web-type rectal atresia diagnosed preoperatively with bedside obliteration of the web. Subsequent transanal web resection was performed. Case two was a one-day-old male born at 28 weeks weighing 980 g with significant cardiac defects including aortic atresia. The patient underwent initial colostomy creation and delayed rectal anastomosis via posterior sagittal anorectoplasty. We review the published literature, discuss the surgical strategy, and highlight the decision-making of diverting ostomy creation and approach of definitive anorectal anastomosis.

Anorectal Malformations: Ideal Surgery Timing to Reduce Incontinence and Optimize QoL

Anorectal malformations (ARMs) are rare and involve a wide spectrum of malformations. Prenatal diagnosis is often incomplete, and the diagnostic pathway is started during the newborn period to identify the type of malformation and the correct treatment. This retrospective study included patients between 8 and 18 y.o. diagnosed with ARM, referring to Our Clinic. We proposed two questionnaires, Rintala Bowel Function Score and the Fecal Incontinence Quality of Life Scale, and we defined four groups referring to surgical timing (age in months < 3, 3-6, 6-9, >9). In total, 74 patients were recruited (mean age 13.05 ± 2.80 y.o.), and data analysis showed a significant relationship between comorbidity and surgical timing. Moreover, timing was related to outcome in terms of fecal continence (better if surgery performed before 3 months) and Quality of Life (QoL). QoL, however, is influenced by other factors (emotional and social life, psychological sphere and take of care of chronic disease). We considered rehabilitation programs, more often practiced by children who underwent surgery after 9 months, to maintain an appropriate relational life. This study highlights the importance of surgical timing as the first step of a multidisciplinary follow-up, taking care of the child in every phase of his growth, tailored to the single patient.

Significance of searching for ganglia in the terminal rectum/fistula of complex anorectal malformations: Related to defecation function

Background

The need to search for ganglia in the terminal rectum/fistula of complex anorectal malformations (ARMs) remains controversial. This study aims to evaluate the relationship between ganglia absence in the terminal rectum/fistula and defecation function after anoplasty.

Methods

A retrospective review of patients who received anoplasty for treating male imperforate anus with rectobulbar (RB)/rectoprostatic (RP) fistulas at a tertiary pediatric hospital was conducted with registered demographic data, imaging study results, and information on the terminal rectum/fistula specimen (excision extension and pathological findings). According to the pathological findings, patients were divided into Groups 1 (ganglia absence) and 2 (ganglia presence). Furthermore, the postoperative defecation function was evaluated using various rating scale questionnaires. Statistical analysis was performed using SPSS 22.0.

Results

Of the 62 patients, 18 (29.0%) showed ganglia absence in the terminal rectum/fistula. By analyzing the imaging data, spinal anomalies and spinal cord anomalies were found in 30.6% (19/62) and 56.5% (35/62) of patients, respectively. Baseline information was comparable between Groups 1 and 2 (P > 0.05). For defecation function, there were no significant differences in Kelly scores between the two groups (4.0 ± 0.8 vs. 4.4 ± 1.1, P = 0.177), while Krickenbeck (3.7 ± 1.8 vs. 5.2 ± 1.4) and Rintala (13.7 ± 3.6 vs. 16.0 ± 2.7) scores in Group 1 were significantly lower than those in Group 2 (both P < 0.05). The overall incidence of constipation was 50% (31/62), being higher for Group 1 than Group 2 (77.5% vs. 38.6%, P = 0.002). The area under the curve of ganglia absence for predicting constipation was 0.696, with 77.8% sensitivity and 61.4% specificity.

Conclusion

Ganglia absence in the terminal rectum/fistula of male imperforate anus with RB/RP fistulas is associated with constipation after anoplasty, but it has limited predictive value for postoperative constipation. It is necessary to search for ganglia in the terminal rectum/fistula, both intraoperatively and postoperatively.

Ectopic scrotum and penoscrotal transposition: Case report and literature review

Background

Ectopic scrotum (ES) is an extremely rare congenital scrotal malformation. Ectopic scrotum with VATER/VACTERL [vertebral defects (V), anal atresia or anorectal malformations (A), cardiac defects (C), tracheoesophageal fistula with or without esophageal atresia (TE), cardiac defects, renal malformations (R), and limb defects (L)] association is even rarer. There are no uniform guidelines for diagnosis and treatment.

Clinical case

We described a 2-year-5-month-old boy who has ectopic scrotum and penoscrotal transposition and reviewed relevant literature in this report. We performed laparoscopy exploration, rotation flap scrotoplasty, and orchiopexy and achieved a great result during the postoperative follow-up.

Conclusions

Combined with the previous literature, we made a summary to come up with a plan for the diagnosis and treatment of ectopic scrotum. Rotation flap scrotoplasty and orchiopexy are worthy of considering operative methods in treating ES. For penoscrotal transposition or VATER/VACTERL association, we can treat the diseases individually.

Effect of megarectum on postoperative defecation of female patients with congenital rectovestibular fistula or rectoperineal fistula

Background

To assess the effect of megarectum on postoperative defecation of female patients with congenital rectovestibular fistula or rectoperineal fistula.

Methods

From March 2013 to February 2021, 74 female patients with congenital rectovestibular fistula or rectoperineal fistula were treated. The age of patients ranged from 3 months to 1 year. Barium enema and spinal cord MRI were performed in all children. 4 patients were removed from the study because of spinal cord and sacral agenesis. Finally, 70 patients underwent one-stage anterior sagittal anorectoplasty (ASARP). Anal endoscopy and anorectal pressure measurement were performed 1 year after surgery. All patients were divided into two groups depending on the presence of megarectum (+) and (-) and observed for constipation and anal sphincter function.

Results

16 patients (4 months to 1 year) were complicated with megarectum, and 5 patients (3 months to 9 months) were without megarectum. The incision infection was seen in 3 patients. All patients were followed up for 1 year to 5 years. Fecal soiling was seen in 2 patients and constipation in 14 patients. Among 16 patients with megarectum, soiling was seen in 1 patient and the constipation in 12 patients. Among 54 patients without megarectum, soiling was seen in 1 patient and constipation in 2 patients. There was a significant difference in the incidence of postoperative constipation between the two groups (megarectum (+) 75% vs. megarectum (-) 3.7% (P < 0.05)). However, there was no significant difference in the score of anal sphincters between the two groups (P < 0.05). And there was no significant difference in anal resting pressure (P = 0.49) and length of anal high pressure area (P = 0.76). 7 patients with constipation and megarectum acquired normal anal function after the dilated rectum was resected.

Conclusion

Megarectum increases the possibility of difficult postoperative defecation in the patients with congenital rectovestibular fistula or rectoperineal fistula. However, constipation was not associated with ASARP postoperative effects on sphincter function. Resection of megarectum is helpful to the improvement of constipation.

Analysis of the efficacy of biofeedback for faecal incontinence after surgery for anorectal malformation

OBJECTIVE

To explore the therapeutic effects of biofeedback in the treatment of faecal incontinence (FI) after surgery for anorectal malformation (ARM).

METHODS

Clinical data were collected from paediatric patients for postoperative biofeedback due to FI caused by ARM between May 2017 and November 2021. The data included the duration of symptoms, the integrity of the anal sphincter, anorectal manometry parameters, and FI scores. These patients were divided into the low ARM group (group A) and the high ARM group (group B).

RESULTS

A total of 45 paediatric patients were enrolled in the study. There were 28 cases in group A and 17 cases in group B. The differences in age, gender, and body weight were not statistically significant between the two groups (p > 0.05). The differences in the clinical indicators were also not statistically significant between the two groups at the time of the initial evaluation. The duration of symptoms was 2.21 ± 0.71 years and 4.14 ± 1.89 years in groups A and B. There were 16 cases with an intact anal sphincter in group A and only two cases with an intact anal sphincter in group B. This difference was statistically significant between the two groups (p < .05). The anal resting pressure, initial sensitivity threshold, defaecation sensitivity threshold, defaecation urge threshold, and FI scores were significantly improved in both groups post-treatment compared to pre-treatment (p < .001). Strong impulses improved significantly in group A, while strong impulses did not improve significantly in group B. The multivariate logistic regression analysis with these variables further showed that symptom duration and anal sphincter integrity were the main factors influencing the therapeutic effects of biofeedback.

CONCLUSION

Biofeedback plays a positive role in the treatment of FI in paediatric patients following surgery for ARM. Symptom duration and anal sphincter integrity were found to be the main factors influencing the therapeutic effect of biofeedback.

Post-operative colonic manometry in children with anorectal malformations: A systematic review

BACKGROUND

Children with anorectal malformations may experience constipation and fecal incontinence following repair. The contribution of altered anorectal function to these persistent symptoms is relatively intuitive; however, colonic motility in this cohort is less well understood. Manometry may be used to directly assess colonic motility.

PURPOSE

The purpose of this systematic review was to synthesize the available evidence regarding post-operative colonic motility in children with anorectal malformations and evaluate the reported equipment and protocols used to perform colonic manometry in this cohort. This systematic review was conducted in compliance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). We conducted a systematic review of four databases: Embase, MEDLINE, PubMed, and the Cochrane Library (1^st January 1985-22^nd July 2021). Studies reporting colonic manometry performed in children following anorectal malformation repair were assessed for eligibility. Data were extracted independently by two authors. Four studies were eligible for inclusion. Of the combined total cohort of 151 children, post-operative colonic manometry was conducted in 35. Insufficient reporting of medical characteristics, bowel function, and manometric outcomes restricted comparison between studies, and limited clinical applicability. No results from high-resolution colonic manometry were identified. Despite the prevalence of post-operative bowel dysfunction in children with repaired anorectal malformations, this systematic review highlighted the markedly limited evidence regarding post-operative colonic motility. This cohort may benefit from assessment with high-resolution techniques; however, future work must emphasize adherence to standardized manometry protocols, and include robust reporting of surgical characteristics, bowel function, and manometric outcomes.

Where Is the Vagina? A Rectal Stricture after a Presumed Cloacal Repair Turns Out to be the Mobilized Vagina and a Missed High Rectovaginal Fistula

We present a case of a rare complication in a 10-month-old female referred to our institution for an anal stricture after primary cloacal repair as an infant. Multimodal imaging, careful physical exam, and endoscopic evaluation revealed her vagina had been pulled through to the location of her anal sphincter muscle complex. We describe the correction of this problem, including identification of her rectum.

Delayed complication due to retained contrast following augmented pressure distal loop colostogram in anorectal malformation

Augmented-pressure distal loop colostogram (APDC) is the most important diagnostic investigation to delineate the detailed anatomy to plan the reparative management of anorectal malformations. APDC is generally considered safe, with a very low complication rate. Herein, we present an unreported complication of APDC, manifesting as acute abdomen, due to retained contrast in distal loop. The patient was managed with evacuation of retained contrast from distal loop. We recommend evacuating the contrast from the distal loop following APDC.

Broadening the phenotypic spectrum of EVEN-PLUS syndrome through identification of HSPA9 pathogenic variants in the original EVE dysplasia family and two sibs with milder facial phenotype

EVEN-PLUS syndrome is a rare autosomal recessive disorder caused by biallelic pathogenic variants in the mitochondrial chaperone called mortalin, encoded by HSPA9. This genetic disorder, presenting with several overlapping features with CODAS syndrome, is characterized by the involvement of the Epiphyses, Vertebrae, Ears, and Nose (EVEN), PLUS associated findings. Only five individuals presenting with the EVEN-PLUS phenotype and biallelic variants in HSPA9 have been published. Here, we expand the phenotypic and molecular spectrum associated with this disorder, reporting two sibs with a milder phenotype and compound heterozygous pathogenic variants (a recurrent variant and a novel one). Also, we confirm a homozygous pathogenic variant in the family originally reported as EVE dysplasia.

Management of post-surgical faecal incontinence due to anorectal malformations by pelvic floor rehabilitation

AIM

Many patients with anorectal malformations (ARM) experience a long-lasting problem with faecal incontinence (FI). We assessed the effectiveness of a pelvic floor rehabilitation program including transcutaneous functional electrical stimulation (TFES) in combination with pelvic floor muscle (PFM) exercises on post-surgical FI in children with ARM.

METHODS

Data of 40 children at the age of 4 years or older who had undergone surgical correction for ARM and suffered from persistent FI referring for pelvic floor rehabilitation were analysed respectively. Patients underwent TFES and PFM exercises for 20 sessions. TFES was applied for 20-min during each session, two times a week. A paediatric FI score questionnaire and a bowel habit diary were completed both before and after the treatment for all children. We completed a FI quality of life questionnaire before the therapy and again after treatment for all patients.

RESULTS

Twenty-two out of 40 (55%) patients responded completely to the treatment (100% reduction in FI episodes) after the completion of treatment sessions, sustained in 19/40 (47.5%) patients after 6 months. Mean ± SD of FI score was 4.9 ± 3.6 at baseline that significantly reduced to 2.4 ± 1.3 and 2.4 ± 1.8 after completion of treatment sessions and 6 months later, respectively (P < 0.05).

CONCLUSIONS

Our results show that TFES and PFM exercises have a considerable beneficial impact on post-surgical FI in children with ARM.

Re-sequencing of candidate genes FOXF1, HSPA6, HAAO, and KYNU in 522 individuals with VATER/VACTERL, VACTER/VACTERL-like association, and isolated anorectal malformation

BACKGROUND

The acronym VATER/VACTERL association describes the combination of at least three component features (CFs): vertebral defects (V), anorectal malformations (ARM) (A), cardiac defects (C), tracheoesophageal fistula with or without esophageal atresia (TE), renal malformations (R), and limb defects (L). Individuals presenting two CFs have been termed VATER/VACTERL-like. Recently, FOXF1, HSPA6, HAAO, KYNU, TRAP1, and ZIC3 have been proposed as candidate genes for VATER/VACTERL, VATER/VACTERL-like, and ARM. Re-sequencing studies identified disease-causing variants in TRAP1 and ZIC3, the contribution of other genes was not independently investigated. One affected variant carrier in FOXF1 was previously identified. Here we re-sequenced FOXF1, HSPA6, HAAO, and KYNU in 522 affected individuals.

METHODS

Using molecular inversion probe (MIP) technology, re-sequencing was performed in 63 individuals with VATER/VACTERL association, 313 with VATER/VACTERL-like association, and 146 with ARM. All individuals were of European ethnicity. Variant filtering considered variants with a minor allele frequency (MAF) ≤0.01 for putative recessive disease-genes HSPA6, HAAO, and KYNU. For the putative dominant disease-gene FOXF1 we considered variants with a MAF ≤0.0001. In silico prediction tools were used for further prioritization.

RESULTS

Only two variants in FOXF1 in two independently affected individuals [c.443G>T, p.(Cys148Phe); c.850T>C, p.(Tyr284His)] passed our filter criteria. One individual presented with ARM, the second presented with TE and C comprising atrial and ventricular septal defects. Sanger sequencing confirmed both variants but also their inheritance from the healthy mother.

CONCLUSION

Our analysis suggests that FOXF1, HSPA6, HAAO and KYNU do not play a major role in the formation of VACTER/VACTERL phenotypes or ARM.

Correlation of the Position of the Anal Dimple with the Caudal Termination of the Striated Muscle Complex in Patients with Anorectal Malformations

Background

In children with anorectal malformations (ARM), the vertical fibres of the striated muscle complex (SMC) are believed to be located within the limits of the anal dimple (AD).

Methods

Forty five cases of ARM underwent posterior sagittal anorectoplasty (PSARP), median age 8.5 months. During PSARP the anterior, posterior limits and midpoint of the AD and SMC were marked. The location of AD was correlated with SMC.

Results

A 'well developed' AD and SMC was seen in 80 % and 86.7 % patients respectively. The mean width of the AD and SMC was more in females than in males (20.96 vs. 18.98 mm and 14.24mm vs. 13.45mm respectively). In 36 cases (80 %), across the spectrum of ARM, the SMC was posterior in relation to the AD. In 7 cases (15.5 %) it correlated in position with the AD and in 2 cases (4.44 %), it was anterior to the AD.

Conclusions

In the majority of cases AD and SMC were 'well developed' and the location of the SMC does not correlate with that of the AD. This has significant practical value in the important step of optimizing the placement of the rectum through the center of the SMC during repair.

Indocyanine Green-Based Fluorescence-Guided Surgery in a Male Infant with Anorectal Malformation

Reconstructive techniques for complex anorectal malformations (ARMs) require intestinal pull-through on vascular pedicles. Traditionally, the visual inspection of the intestinal perfusion is the sole modality adopted to assess tissue viability. In this article, we report the case of a child with a rectourethral prostatic fistula, who had a Peña's descending colostomy with distal mucous fistula in the neonatal period and a posterior sagittal anorectoplasty at 6 months of life. The ARM repair was guided by indocyanine green (ICG), which was intravenously administered to evaluate the blood flow of the intestinal pull-through using the EleVision IR system (Medtronic Ltd, U.K.). ICG-based fluorescence-guided surgery helped to define the proximal resection margin, impacting intraoperative decision making, and no postoperative complications occurred. We envisage that this technology will become part of the armory of pediatric surgeons soon, by reducing the risk of intra- and postoperative complications.

Diagnosis and management of fecal incontinence in children and adolescents

Fecal incontinence (FI) is a commonly occurring disease of high concern. It is characterized by voluntary and involuntary defecation in children and adolescents. It is not only a physical disease but also a psychological and behavioral disorder. FI poses a serious burden on individuals and their families and therefore has become a social problem. Unfortunately, the management of FI among children is still a challenge because the etiology varies widely. Constipation has been found to be the most common cause, while sphincter dysfunction and neurogenic abnormalities may also play a role. Currently, no consensus guidelines exist, and the criteria for selecting optional methods remain unclear. It is therefore necessary to improve the efficacy of diagnosis and management strategies of FI in children. This review focused on the classification and etiology, discussed the diagnosis and management methods of FI in children and adolescents, and aimed to guide future studies.

Clinical Quiz-A Rare Case of Anal Canal Duplication in the Context of Currarino Syndrome

Currarino syndrome (CS) is a rare condition that presents with any combination of a sacral defect, a presacral mass, and an anorectal malformation. This collection, referred to as Currarino's triad, may not necessarily present as all three abnormalities in the diagnosis of the syndrome. Anal canal duplication (ACD) is an even rarer occurrence. We present a case that lies on the CS spectrum with an associated ACD and discuss a complex surgical challenge that necessitated a customized management plan, devised through a multidisciplinary approach.

Abdominoperineal Tunnel Crafted with Alken's Telescopic Dilators: A Novel Technique!

Background

Abdomino-perineal pull through procedure needs perineal dissection and for that swap of supine to prone may be necessary. To avoid that as well as to avoid neuro-muscular damage; we are describing a simple minimal invasive procedure with help of Alken's telescopic dilators.

Patients & Methods

We created abdomino-perineal tunnel with Alken's telescopic dilators to bring down the lumen of intestine in perineum in eight patients.

Results

Operative time happened to be less and procedure found to be less traumatic. All the eight patients had satisfactory outcome.

Conclusions

Actually, we have repurposed the Alken's dilator for creation of abdomino-perineal tunnel or track to get benefit of minimal dissection of perineum during pull-through procedure as well as to avoid neuro-muscular damage.

Attention deficit hyperactivity and autism spectrum disorders in patients with anorectal malformations

AIM

To assess the risk of neurodevelopmental disorders in patients with anorectal malformations compared to controls.

METHODS

This was a population-based cohort study including all patients born in Sweden 1997-2012 with anorectal malformation in the Swedish National Patient Register and five matched controls per patient. Anorectal malformation was the exposure. All individuals were evaluated for the outcomes, attention deficit hyperactivity disorder or autism spectrum disorder in the National Patient Register. Data on drugs for attention deficit hyperactivity disorder were retrieved from the Swedish Prescribed Drug Register and used as proxy for attention deficit hyperactivity disorder. Conditional logistic regression was used to calculate odds ratios (OR) and 95% confidence intervals (95% CI). Analyses were adjusted for confounders.

RESULTS

Five hundred and fifteen patients with anorectal malformations and 2560 controls were included. Patients with anorectal malformation had a higher risk of attention deficit hyperactivity disorder (OR 3.01 (95% CI, 1.83-4.95)) and autism spectrum disorders (OR 3.07 (95% CI, 1.62-5.79)) compared to the controls. Significantly more patients with anorectal malformation had been prescribed medication for attention deficit hyperactivity disorder compared to controls (OR 2.26 (95% CI 1.33-3.85)).

CONCLUSION

Patients with anorectal malformations have a higher risk of attention deficit hyperactivity disorder and autism spectrum disorders than controls.

A Comparison of Sexual Function in Male Patients with Anorectal Malformations Between the Conventional and Laparoscopic Approaches

Aim: To compare the incidence of erectile dysfunction and ejaculatory anomalies in male patients with anorectal malformation (ARM) after treatment with the sacroperineal approach (Group S) or laparoscopically assisted anorectoplasty (LAARP; Group L). Methods: Male patients who underwent repair of high- or intermediate-type ARMs at our center and aged ≥15 years as of November 2020 were enrolled. Patients with intellectual disabilities or chromosomal disorders were excluded. Sacroperineal anorectoplasty has long been routinely performed at our hospital, and LAARP was introduced as a standard procedure in 2000. The medical records of the outpatient clinic were retrospectively reviewed, and questionnaires were sent in November 2020. Data regarding erectile dysfunction, ejaculatory anomalies, and associated anomalies were collected and compared between the two groups. Results: Answers were obtained from 7/22 patients in Group S (32%) and 10/17 patients in Group L (59%). Patient characteristics were similar, but the median age at the time of replying was significantly different (22 [18-29] years in Group S and 19 [15-20] years in Group L, P = .0060). None of the patients had erectile dysfunction, but 3 patients in Group S (43%) and 5 patients in Group L (50%) had ejaculatory failure, with no significant difference between the two groups. Conclusions: The incidence of sexual dysfunction in male patients with ARM might be higher than that in the healthy population. Patients might abscond from their follow-up visits as they age; therefore, providing patients with accurate information on this issue before puberty is essential.

Laparoscopic Approach in Anorectal Malformations: How We Do It

Laparoscopy has a major role in the treatment of anorectal malformations (ARM) since Georgeson et al. introduced the laparoscopic assisted anorectoplasty in 2000. The majority of ARM can be repaired through a posterior sagittal incision without the need to enter the abdomen. Some ARM types require an abdominal approach to detach the rectum from the urinary tract in males or the vagina in females. Those malformations benefit from laparoscopy. In this article, we aimed to highlight the technical aspects relevant to the current laparoscopic repair of ARM.

Surgical Management of an Obstructive Müllerian Anomaly in a Patient with Anorectal Malformation

Müllerian duct anomalies are rare in the general population, occurring in less than 3% of women, but much more prevalent in female patients with anorectal malformation, occurring in up to 30% of these patients. Unicornuate uterus with a rudimentary non-communicating horn is a congenital anomaly of Mullerian development which can be seen in isolation or in conjunction with other anomalies, with several case reports described in patients with VACTERL association. These anomalies may be asymptomatic until the patient develops dysmenorrhea or devastating obstetrical complications. We describe the successful surgical management of an obstructive Müllerian anomaly in a post-pubertal female patient with anorectal malformation.

Perineal Groove: Is It More Common Than We Think? Clinical Characteristics of Four Cases and Review of Literature

Background: Perineal groove is a very rare congenital malformation that usually occurs in females. It has been described as a wet, un-epithelialized mucus tissue extending from the posterior vaginal fourchette to the anterior anal opening. It is generally asymptomatic and self-limited. Due to its rarity, it is often unfamiliar to clinicians, often leading to a missed diagnosis or unnecessary interventions. Methods: During the period from September 2017 to September 2020, four patients (two newborns and 2 infants) were diagnosed with perineal grooves. They were referred to the pediatric surgery clinic because of abnormal findings during their genital examinations. During the same period of time, the clinic received 12 other new patients with various forms of anorectal malformations. Results: All four patients were girls. During examinations by their respective pediatricians, an abnormality in the perineum was noted in each of the patients. The depth of the grooves varied between the four patients and extended from the anus to the vaginal fourchette. None of the patients experienced any other symptoms related to the malformation. All the cases were referred to the pediatric surgeon by their pediatricians as a diagnosed anal fissure or abnormal finding in the genitalia. In all four patients, the mothers did not take folic acid during the pregnancy. The four patients were observed, and no surgery was needed; in three of the cases, there was a complete spontaneous resolution while the fourth patient still remains under observation. Conclusions: Perineal groove is a rare malformation with a low incidence rate. It is more common in female infants and usually self resolves before the age of 2 years. The condition is diagnosed on clinical examination; however, it is easily misdiagnosed and may lead to unnecessary interventions and surgery.

Case Report: A Case Series of Rare High-Type Anorectal Malformations With Perineal Fistula: Beware of Urethral Involvement

Anorectal malformations (ARMs) are one of the more common congenital anomalies encountered in pediatric surgery where the majority are diagnosed in the early neonatal period. The etiology of ARM remains uncertain and is likely to be multifactorial. A majority of ARMs result from abnormal development of the urorectal septum in early fetal life. There can be a broad range of presentation features varying from low anomalies with perineal fistula to high anomalies mandating intricate management. To develop a standardized system for comparison in follow-up studies, the Krickenbeck classification was introduced according to the type of fistula. According to the Krickenbeck classification of ARM, those with a rectoperineal fistula are classified as low-type ARM and are usually managed with a perineal anoplasty without colostomy. In this case series, we describe two rare cases of distinct high and intermediate ARM with rectoperineal fistulas, which were thought to be low-type ARM but were subsequently found to have urethral involvement. Our cases consisted of high and intermediate ARMs, which were successfully treated with posterior sagittal anorectoplasty as described. These cases exemplified rare variants of ARM where rectoperineal fistulas can be associated with high-type anomalies. Rare-variant ARM with rectopenile or rectoscrotal fistula can be associated with high-type anomalies in contrast to classical rectoperineal fistulas. A high index of suspicion should remain in cases with previous urinary tract infection despite normal imaging. Careful planning is also needed with consideration of possible need for urethral repair during anoplasty, which was needed in both our cases.

Anorectal Malformation with Rectovestibular Fistula and Vaginal Agenesis: Usage of Rectovestibular Fistula as a Neovagina Followed by PSARP with Preservation of the Anal Sphincter

Anorectal malformation with rectovestibular fistula associated with vaginal agenesis is rare. We report on a child in whom this combination was diagnosed at the age of 1 year. After creation of a divided descending colostomy, we chose to leave the rectum-rectovestibular fistula to function as a neovagina, while the sigmoid colon was relocated via modified posterior sagittal anorectoplasty. The colostomy was closed 6 months after the main surgery. After a follow-up of 3 years, the patient is continent for stool and urine. The introitus of the neovagina appears wide and easy to explore. We conclude that our surgical approach may be a good option for these children.

Neurons populating the rectal extrinsic nerves in humans express neuronal and Schwann cell markers

BACKGROUND

In mice, Schwann cell (SC) progenitors give rise to autonomic ganglion cells and migrate into the gut to become enteric neurons. It is unknown whether SC progenitors have a similar fate in humans. In search of evidence for human SC-derived neurogenesis in the gastrointestinal (GI) tract, we studied the rectums from cadaveric controls and children with anorectal malformations (ARM).

METHODS

We analyzed distal rectal tissue taken at autopsy from 10 children with normal GI tracts and resected rectal specimens in 48 cases of ARM. Of these specimens, 6 had neurons within the extrinsic rectal innervation. These were further investigated with immunohistochemistry for neuronal and SC/glial markers.

KEY RESULTS

Perirectal tissue from control and ARM contained GLUT1-positive extrinsic nerves, many containing neurons. SC/glial markers (SOX10, CDH19, and PLP1) were expressed by glia in the enteric nervous system and perirectal nerves, while MPZ predominated only in glia of perirectal nerves, in both control and ARM. Neurons in perirectal nerves were 61% larger in ARM samples and co-expressed SOX10 (81%), PLP1 (73%), and CDH19 (56%). In ARM, cytoplasmic SOX10 was co-expressed with neuronal antigens in ~57% of submucosal and myenteric neurons, vs. ~3% in control. Furthermore, intrinsic gut neurons in ARM specimens co-expressed PLP1 (18%) and CDH19 (18%); however, neuronal co-expression of PLP1 and CDH19 was rarely (<2%) observed in controls.

CONCLUSIONS & INFERENCES

Dual expression of glial and neuronal markers in rectal and perirectal neurons support a model of Schwann cell-derived neurogenesis in the innervation of the human GI tract.

Comparison of 3D vs 2D laparoscopic-assisted anorectal pull-through (LAARP) for high anorectal malformations in children

INTRODUCTION

The limitation of two-dimensional (2D) laparoscopic techniques includes lack of stereoscopic vision and depth perception which can affect surgical performance, physical and mental comfort of the operating surgeon. 3D laparoscopic surgery is popular in adults; however, its application and experience in the pediatric age group have been limited. We did a comparison of 2D and 3D laparoscopic-assisted anorectal pull-through (LAARP) in male high anorectal malformations (ARM).

MATERIAL AND METHOD

This prospective cohort study included male children diagnosed with high anorectal malformation (recto-prostatic urethral fistula) who underwent LAARP in infancy after a neonatal colostomy between November 2019 to March 2020. The patients were randomized into a 2D group or 3D group at a 1:1 ratio. Patient demographics and operative/postoperative parameters were recorded. The effect of 3D laparoscopy was assessed in terms of laparoscopy visual parameters (image quality, depth perception, hand-eye coordination, and precision), physical discomfort (5-point Likert scale), and mental strain (State-Trait Anxiety Inventory scale). The statistical tests were performed on SPSS version 16.

RESULTS

The demographics of both groups, 20 (patients in each), were similar. There was a significant reduction of laparoscopy execution time, physical discomfort (for eye, hand and wrist strain), and overall mental strain in the 3D group. There were similar complications, blood loss, and hospital stay, and no open conversion in two groups.

CONCLUSION

3D LAARP is feasible and safe in the surgical treatment of ARM in children. Further studies with assessment by more than one observer are needed to investigate the wider application of 3D in pediatric surgery.

Laparoscopically assisted anorectoplasty-Surgical procedures and outcomes: A literature review

Anorectal malformation includes various types of anomalies. The goal of definitive surgery is achievement of fecal continence. Twenty years have passed since laparoscopically assisted anorectoplasty (LAARP) was reported by Georgeson. Since LAARP is gaining popularity, its long-term outcomes should be evaluated. Presently, there is no evidence regarding the optimal method of ligating and dividing the fistula correctly and creating the pull-through canal accurately. Rectal prolapse and remnant of the original fistula (ROOF) tend to develop more often in LAARP patients than in posterior sagittal anorectoplasty (PSARP) patients; however, robust evidence is not available. Prolapse may be prevented by suture fixation of the rectum to the presacral fascia; however, if prolapse occurs, the indication, timing, and the best method for surgical correction remain unclear. Most patients with ROOF are asymptomatic, and there is controversy regarding the indications for ROOF resection. This article aimed to detail the various modifications of the LAARP procedures reported previously and to describe the surgical outcomes, particularly focusing on rectal prolapse, ROOF, and fecal continence, by reviewing the literature. Functional outcomes after LAARP were almost similar to those noted after PSARP, and we have demonstrated that LAARP is not inferior to PSARP with respect to fecal continence. Although there is controversy regarding the application of LAARP for recto-bulbar cases, we believe that LAARP is still evolving, and we can achieve better outcomes by improving the procedure.

Leveraging Collaboration in Pediatric Multidisciplinary Colorectal Care Using a Telehealth Platform

PURPOSE

Pediatric colorectal problems often require complex multidisciplinary care (MDC), which has been affected by the SARS-CoV-2-2019 (COVID-19) pandemic. We describe our utilization and implementation of telehealth (TH) for pediatric colorectal surgery MDC visits and collate patient satisfaction using TH compared to in-person (IP) visits.

METHODS

Implementation of a single-institution MDC TH platform to perform patient visits on February 1, 2020 was studied. Following 6 months of implementation, TH visits' characteristics were compared with IP visits in the 3 months before implementation by patient volume, length of clinic visits, and patient satisfaction survey results.

RESULTS

Before implementation, 152 (100%) of clinic visits were IP. During the implementation, 87 (37.7%) were TH visits. Seventy-four (49%) were MDC visits, 17 (23%) of these using the TH platform. Each TH visit's median length was 25 minutes (IQR 15-30), while the median length of IP visits was 45 minutes (IQR 30-45). Pre-implementation satisfaction scores were 88.6% positive, while satisfaction scores after implementation were 96.8% positive. None of the patients who utilized the TH platform had an unplanned hospital admission within 24 hours of being seen.

CONCLUSION

Our experience demonstrates that the TH platform can provide an efficient avenue for established patients and families to receive highly complex multidisciplinary follow-up care. High levels of patient satisfaction indicated that TH should become part of the routine care plan for patients who require long-term or consistent follow-up.

Persistent Left Superior Vena Cava: A Rare Association

Persistent left superior vena cava (PLSVC) is the most frequent abnormality in the general population with the frequency of 0.1% to 0.5%. It results from the failure of the involution of the left anterior cardinal vein. Right and Left SVC can coexist together in 80% to 90% of cases. Association of PLSVC with ano rectal malformation (ARM) is very rarely reported. Hence, here is a report of a unique case of PLSVC in a female neonate with ARM.

A Novel Surgical Approach for the Management of Cloacal Exstrophy with a Giant Omphalocele

Cloacal exstrophy is a rare malformation that presents as a lower midline abdominal wall defect which affects the gastrointestinal and genitourinary systems. The components of cloacal exstrophy characteristically include omphalocele, exstrophy of perineal structures, and imperforate anus. Most of these patients also have renal anomalies such as pelvic kidney, fused kidneys, or solitary kidneys. This congenital condition can also be associated with spinal issues, such as spinal dysraphism. When combined with spinal defects, it is referred to as the omphalocele, exstrophy, imperforate anus, and spinal defects (OEIS) complex, and is one of the most challenging surgical conditions to manage. Here, we present a unique case of a low-birth-weight patient with OEIS and a liver containing giant omphalocele and the novel surgical technique used to manage her cloacal exstrophy whereby the cecal plate was not separated from the bladder halves, but rather left for an autoaugment, and the ileum was connected to the hindgut.

Ulcerative Colitis of the Neovagina in a Toddler with Cloaca and Chronic Kidney Disease

The case of a toddler with long-channel cloaca, mild chronic kidney disease (CKD) due to renal dysplasia, and early onset of ulcerative colitis (UC) is herein reported. The patient underwent definitive repair of cloaca, that included vaginal elongation with colon, at 5 months of age and was admitted for episodes of vaginal bleeding at 22 months of age. A vaginoscopy revealed a severe inflammation of the colonic neovagina. As rectal bleeding was also noticed, she underwent a colonscopy that showed the same macroscopic inflammatory picture. Neovaginal and colonic biopsies confirmed UC. The mother turned out to be affected by UC since adolescence. The patient is now on oral therapy with mesalazine and topical steroid and mesalazine in the neovagina. The association between cloaca and inflammatory bowel disease (IBD) is anecdotal, but the family history of IBD should be considered when planning the surgical reconstruction of patients with cloaca. In this patient, the occurrence of UC may require a new neovagina in the future and the concomitance of CKD may complicate the overall management due to the potential nephrotoxicity of drugs used for UC therapy.

Posterior Cloacal Variant with Clitorolabial Transposition and a Rectoperineal Fistula

We present a case and discuss the management of a posterior cloacal variant not as yet described in the literature. A 5-week-old infant presented to our institution with a posterior cloacal variant and transposition of the clitoris and labia. After initial radiological investigations, staged operative intervention was performed over a 1-year period. This included an initial laparotomy (with drainage of hydrocolpos and formation of a colostomy), a left ureteric reimplantation and a posterior sagittal anorectoplasty due to a rectoperineal fistula. The child is under continued long-term follow-up by our specialist pediatric surgical team.

Neonatal Renal Failure in the Setting of Anorectal Malformation: A Case Report and Literature Review

Anorectal malformations (ARMs) can occur in isolation or in association with other anomalies, most commonly those of the genitourinary systems. Morbidity and mortality are highest among patients who develop end-stage renal disease (ESRD) either from severe congenital anomalies (dysplastic kidneys) or from repeated infections in those who have vesicoureteral reflux or persistent recto-urinary fistulas. We describe our management strategy for a patient born with an ARM and bilateral dysplastic kidneys to highlight the nuances and complex decision-making considerations required in taking care of this complex patient population. Our patient is a male twin born at 32 weeks' gestational age who was found to have bilateral dysplastic kidneys on prenatal ultrasound. On initial examination, an imperforate anus was identified along with a severe urethral stricture. Full workup also revealed sacral dysgenesis and confirmation of the dysplastic kidneys. On day of life 3, a laparoscopic diverting sigmoid colostomy was performed; urologic evaluation confirmed the severe urethral stricture, which required dilation to place an 8F council tip catheter. Due to his small size, peritoneal dialysis could not be initiated until five weeks of age. As full volumes could not be reached with peritoneal dialysis, he was soon transitioned to continuous renal replacement therapy. At five months of age, a laparoscopic-assisted posterior sagittal anorectoplasty (PSARP) was performed. As his urethral stricture had worsened, a suprapubic catheter had been placed for bladder decompression. Reversal of his colostomy was performed 15 days after PSARP. Unfortunately, the patient required three further surgical interventions due to abdominal wall and inguinal hernias contributing to filling and emptying dysfunction when utilizing peritoneal dialysis. He is currently 16 months of age and remains inpatient due to intermittent hemodialysis requirements along with autocycling of his peritoneal dialysis. He is working on developmental milestones, can pull to a stand, and is currently being evaluated for kidney transplantation. The development of ESRD in a neonate or infant with an ARM is rare and can be due to congenital dysplasia or agenesis of bilateral kidneys. While peritoneal dialysis is the preferred approach, catheter dysfunction can result from intra-abdominal adhesions or inadequate fluid removal from inguinal or abdominal wall hernias that form in the setting of increased intra-abdominal pressure required for peritoneal dialysis. Close collaboration is required between pediatric surgeons, nephrologists, and urologists to facilitate colonic and urologic reconstruction and manage catheter-related complications.

Sonographic detection and localization of fistulas in fetuses with imperforate anus: Case reports

Imperforate anus (IA) requires urgent treatment after birth, which is dependent on the type of IA, and is also frequently associated with other congenital abnormalities. Most patients with IA have an accompanying fistula, whose location is strongly associated with the type of IA. The fistula location can be a key factor in defining appropriate treatment, especially in neonates presenting with severe associated abnormalities. Herein, we report three cases of IA in which fistulas were detected and localized prenatally. Examination of the fetal pelvis through the sagittal or coronal view, using high-frequency transducers, revealed the location of the fistulas. In particular, the sagittal view obtained using the fetal infracoccygeal or perineal approach allowed us to determine the precise anatomy of the fistulas. Neonatal assessment confirmed the fistula locations. We recommend using the sagittal view obtained using the fetal infracoccygeal or perineal approach with high-frequency transducers to assess fistulas in fetuses with IA.

Neurogenic Bowel Dysfunction in Children and Adolescents

Neurogenic/neuropathic bowel dysfunction (NBD) is common in children who are affected by congenital and acquired neurological disease, and negatively impacts quality of life. In the past, NBD received less attention than neurogenic bladder, generally being considered only in spina bifida (the most common cause of pediatric NBD). Many methods of conservative and medical management of NBD are reported, including relatively recently Transanal Irrigation (TAI). Based on the literature and personal experience, an expert group (pediatric urologists/surgeons/gastroenterologists with specific experience in NBD) focused on NBD in children and adolescents. A statement document was created using a modified Delphi method. The range of causes of pediatric NBD are discussed in this paper. The various therapeutic approaches are presented to improve clinical management. The population of children and adolescents with NBD is increasing, due both to the higher survival rate and better diagnosis. While NBD is relatively predictable in producing either constipation or fecal incontinence, or both, its various effects on each patient will depend on a wide range of underlying causes and accompanying comorbidities. For this reason, management of NBD should be tailored individually with a combined multidisciplinary therapy appropriate for the status of the affected child and caregivers.

RNA-Seq Profiling of Circular RNAs During Development of Hindgut in Rat Embryos With Ethylenethiourea-Induced Anorectal Malformations

Anorectal malformations (ARMs) are among the most common congenital terminal digestive tract malformations. Circular RNAs (circRNAs), a novel type of endogenous non-coding RNAs, play roles in the development of the digestive system; however, their contributions to the pathogenesis of ARMs are not well-established. In this study, we explored the mechanism underlying ethylenethiourea (ETU)-induced ARMs by profiling circRNA expression via RNA-seq and constructing a regulatory circRNA-miRNA-mRNA network. Nine pregnant rats were gavage-fed a single dose of 125 mg/kg 1% ETU (ARM group) on gestational day 10 (GD10), and another 9 pregnant rats received a similar dose of saline (normal group) as a control. Embryos were obtained by cesarean section on the key time-points of anorectal development (GD14, GD15, and GD16). Hindgut samples isolated from the fetuses were evaluated by high-throughput sequencing and differentially expressed circRNAs were validated by reverse transcription-quantitative polymerase chain reaction, agarose gel electrophoresis, and Sanger cloning and sequencing. A total of 18295 circRNAs were identified in the normal and ARM groups. Based on the 425 differentially expressed circRNAs (|Fc| > 2, p < 0.05), circRNA-miRNA and miRNA-mRNA pairs were predicted using miREAP, miRanda, and TargetScan. A total of 55 circRNAs (14 up- and 41 downregulated in the ARM group compared to the normal group) were predicted to bind to 195 miRNAs and 947 mRNAs. Competing endogenous RNA networks and a Kyoto Encyclopedia of Genes and Genomes analysis revealed that novel_circ_001042 had the greatest connectivity and was closely related to ARM-associated signaling pathways, such as the Wingless Type MMTV integration site family, mitogen-activated protein kinase, and transforming growth factor-β pathways. These results provide original insight into the roles of circRNAs in ARMs and provide a valuable resource for further analyses of molecular mechanisms and signaling networks.