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Gynecologic Concerns: Cloaca and Complex ARMs
Chapter 1 of 7 · Diagnosis & Workup
Obstruction risk
Menstrual Obstruction Risk and Mullerian Assessment
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Educational content from recorded physician discussions — not medical advice. Talk to your (or your child's) care team about your situation.
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What the experts said
Assessment should begin 6 to 9 months after the onset of puberty to evaluate estrogen effects on the Mullerian system
Girls will not start menstruation until about 1.5 to 3 years after the onset of breast development
About 30% of vaginal switch cases had distal vaginal tissue with poor blood supply requiring reoperation
The vaginal switch procedure was performed in 60 patients, with mean common channel length of 5.2 centimeters
Of 568 cloaca patients at the center, vaginal switch was only applicable in 10% of cases
45% of vaginal switch patients (27 of 60) acquired some degree of vaginal stenosis
11 vaginal switch patients required vaginal replacement and 6 required enteroidoplasty
4 vaginal switch patients required incidental oophorectomy despite attempts to preserve ovarian blood supply
Native vagina is always superior to graft tissue for vaginal reconstruction
At the time of review, 134 neovaginal replacements had been performed at the center, with rectum being the most common segment used
Enteroidal stenosis occurred in 8-18% of patients with neovaginal replacement using various bowel segments
Neovaginal prolapse ranged from 8% to 20% depending on the bowel segment used
Only patients with rectal neovagina complained of mucus secretion; colonic neovagina patients did not have significant mucus concerns
Buccal mucosa grafts require patients to wear a vaginal mold ("rocket ship") for about one week postoperatively at bed rest
The team does not include vaginal dilation at the time of neovaginal reconstruction, even with bowel replacement
Perineal structures including native vagina respond to estrogen stimulation, becoming more pliable and healing better, making puberty the optimal time for enteroidoplasty
Assessment of vaginal adequacy and introital size should be performed 6-8 weeks after colostomy closure
Patency of the reproductive tract should be assessed at the time of definitive repair to prevent menstrual obstruction
Serial ultrasound should be used to follow endometrial stimulation and confirm Mullerian patency before menarche
Rectal patch vaginoplasty can be performed for patients with fibrotic, non-elastic vaginas who have redundant rectum and perform daily enemas
Using a small segment of rectum for vaginal patching may be appropriate for patients who rely on daily enemas rather than rectal musculature for bowel control
Long-term outcome survey was sent to 192 eligible patients over 18 years of age, with 82 responses received
Women with cloaca were more likely to have additional gynecologic conditions (PID, infertility, endometriosis, PCOS) than women with other anorectal malformations
Survey respondents reported 40 pregnancies in 25 patients, with 35 live births, 1 neonatal death, and 5 miscarriages
22 patients underwent cesarean section and 7 had vaginal deliveries among survey respondents
All 9 cloaca patients in the pregnancy cohort were delivered by cesarean section
Patients with neovaginal grafts should not be considered candidates for vaginal delivery
Patients who catheterize via Mitrofanoff or perform daily enemas may have more risk from cesarean section than vaginal delivery
Laparoscopy allows assessment and mobilization of Mullerian structures when they cannot be accessed from the perineum
Laparoscopy can facilitate dissection of vagina from posterior bladder and rectum, minimizing incision size during definitive repair
41% of patients with cloacal anomaly developed pelvic collection of menstrual blood requiring reoperation, according to Dr. Pena's group's data
23 cases of neovaginal malignancy have been reported in the literature, with majority being squamous cell carcinomas
Of 6 adenocarcinoma cases in neovaginas, only 4 had identified bowel segments: 2 sigmoid, 1 colon, 1 ileum
Mean time to development of neovaginal malignancy was 19.2 years overall and 24 years for bowel segment neovaginas