Postoperative complications after reconstructive surgery for cloacal malformations: a systematic review

Novel Approaches to Patients with Differences of Sex Development

Patients with differences of sex development (DSDs) have complex anatomy and surgical needs related to both Mullerian and non-Mullerian structures. Approaches to vaginal reconstruction for these conditions are guided by individual anatomy, with the goal of establishing unobstructed outflow for the reproductive, urinary, and gastrointestinal tracts. Patients may have anatomy requiring vaginoplasty for either outflow tract obstruction or chosen sexual function. In this article, the authors focus on management of differences in vaginal anatomy with delayed vaginoplasty for the newborn with DSD.

A Modification of the Anoplasty Technique during a Posterior Sagittal Anorectoplasty and Anorectal Vaginal Urethroplasty Closure: The Para-U-Stitch to Prevent Wound Dehiscence

OBJECTIVE

 Wound dehiscence after posterior sagittal anorectoplasty (PSARP) or anorectal vaginal urethroplasty (PSARVUP) for anorectal malformation (ARM) is a morbid complication. We present a novel anoplasty technique employing para-U-stitches along the anterior and posterior portions of the anoplasty, which helps buttress the midline U-stitch and evert the rectal mucosa. We hypothesized that, in addition to standardized pre- and postoperative protocols, this technique would lower rates of wound dehiscence.

MATERIALS AND METHODS

 A retrospective review of patievnts who underwent primary PSARP or PSARVUP with the para-U-stitch technique from 2015 to 2021 was performed. Wound dehiscence was defined as wound disruption requiring operative intervention within 30 days of the index operation. Superficial wound separations were excluded. Descriptive statistics were calculated. The final cohort included 232 patients.

RESULTS

 Rectoperineal fistula (28.9%) was the most common ARM subtype. PSARP was performed in 75% and PSARVUP in 25%. The majority were reconstructed with a stoma in place (63.4%). Wound dehiscence requiring operative intervention occurred in four patients, for an overall dehiscence rate of 1.7%. The dehiscence rate was lower in PSARPs compared with PSARVUPs (0.6 vs. 5.2%) and lower for reconstruction without a stoma compared with a stoma (1.2 vs. 2.0%). There were additional six patients (2.6%) with superficial wound infections managed conservatively.

CONCLUSION

 We present the para-U-stitch anoplasty technique, which is an adjunct to the standard anoplasty during PSARP and PSARVUP. In conjunction with standardized pre- and postoperative protocols, this technique can help decrease rates of wound dehiscence in this patient population.

Redo Surgeries in Anorectal Malformations: A Single-center Experience

Aims and Objectives

Complications following posterior sagittal anorectoplasty (PSARP) for ARM are well known. In this article, we present our experience of managing five patients who required major redo surgeries for complications resulting from previous attempts to correct ARM.

Materials and Methods

We reviewed all patients who underwent major redo surgeries in our hospital for complications from previous repairs for ARM, from June 2013 to June 2019. Data was obtained from hospital records and analysed.

Results

Five patients whose ages ranged from 5 months to 14 years were included in the study. Four were boys and 1 was a girl. All patients had undergone PSARP in other hospitals. The presentations were retained distal bowel causing urinary retention and constipation (n=1), pulled through proximal urethra and bladder neck presenting as passage of urine from neo-anus (n=1), retained common channel (of cloaca) causing a 'H' type configuration (n=1), mispositioned neo-anus (n=1) following a primary PSARP and lastly undivided recto-urethral fistula causing fecaluria (n=1). All of them underwent redo repairs by posterior sagittal approach with documented improvement in their symptoms. Two of them required total bowel management to remain clean.

Conclusion

All the complications reported here have been described in literature nevertheless, this report will add to the body of experience. Posterior sagittal approach (PSA) has proved to be very successful technique in correcting these complications.

Penile inversion vaginoplasty outcomes: Complications and satisfaction

Penile inversion vaginoplasty helps to alleviate gender dysphoria and improve quality of life in many transgender individuals. Overall, the procedure is associated with high post-operative satisfaction, even when complications occur. Adverse events related to vaginoplasty are commensurate with other genitourinary reconstructive procedures performed for other diagnoses (ie, cancer or congenital issues). Here, we explore the incidence of complications following vaginoplasty, emphasizing the challenges in defining and managing these adverse events. In addition, outcome measures to assess patient satisfaction will be reviewed.

Creation of an Acellular Vaginal Matrix for Potential Vaginal Augmentation and Cloacal Repair

STUDY OBJECTIVE

Our aim was to use porcine vagina to create a vaginal matrix and test its cellular biocompatibility.

DESIGN, SETTING, AND PARTICIPANTS

Vagina was harvested from pigs and decellularized (DC) using a combination of detergents (Triton X-100 and sodium deoxycholate) and enzymes (DNAse/RNAse).

INTERVENTIONS

The presence of cellular material, collagen structural integrity, and basement membrane proteins were assessed histologically. To address cytocompatibility, porcine adipose-derived mesenchymal stem cells were harvested from abdominal fat together with vaginal epithelial cells and seeded onto the mucosal aspect of the vaginal scaffold. Both cell populations were seeded individually and assessed histologically at days 3 and 10.

MAIN OUTCOME MEASURES AND RESULTS

The combination of enzymes and detergents resulted in a totally acellular matrix with very low DNA amount (control = 97.5 ng/μL ± 10.8 vs DC = 40.1 ng/μL ± 0.33; P = .02). The extracellular matrix showed retention of collagen fibers and elastin and a 50% retention in glycosaminoglycan content (control = 1.18 μg/mg ± 0.28; DC = 1.35 μg/mg ± 0.1; P = .03) and an intact basement membrane (positive for laminin and collagen IV). Seeded scaffolds showed cell attachment with adipose-derived mesenchymal stem cells and vaginal epithelial cells at days 3 and 10.

CONCLUSION

It is possible to generate an acellular porcine vaginal matrix capable of supporting cells to reconstruct the vagina for future preclinical testing, and holds promise for creating clinically relevant-sized tissue for human application.