Recent Advances in Pediatric Surgery
Transcript of Recent Advances in Pediatric Surgery
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Recent Advances in Pediatric Recent Advances in Pediatric Recent Advances in Pediatric Recent Advances in Pediatric SurgerySurgerySurgerySurgery
연세대학교연세대학교연세대학교연세대학교 의과대학의과대학의과대학의과대학 외과학교실외과학교실외과학교실외과학교실
한한한한 석주석주석주석주
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• Pediatric surgery remains a broad field
encompassing a spectrum of conditions
extending from the head and neck region to the
pelvis.
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Academic Societies of Pediatric
Surgery
• American Pediatric Surgical Association
• Pacific Association of Pediatric Surgery
• British Association of Paediatric Surgeons
• Canadian Association of Pediatric Surgeons
• Surgical Forum at the American College of Surgeons
• Surgical Section of the American Academy of Pediatrics
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The Main Journals of
Pediatric Surgery
• European Journal of Pediatric Surgery
• Journal of Pediatric Surgery
• Pediatric Surgery, International
• Seminars in Pediatric Surgery
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Thoracic conditions
• Pediatric surgery includes nearly every
structure located within the chest except the
heart.
– Pectus excavatum deformity
– Esophageal atresia
– Technique for complex tracheal reconstruction
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Pectus Excavatum
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Minimal Invasive
Surgery: Nuss
Technique (1998)
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For 2 years
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Evaluation of pectus bar position and osseous bone formation . Journal of Pediatric Surgery,
Volume 38, Issue 6, June 2003, Pages 953-956
Daniel J. Ostlie, Julie K. Marosky, Troy L. Spilde, Charles L. Snyder, Shawn D. St Peter, George
K. Gittes and Ronald J. Sharp
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Acquired thoracic scoliosis following minimally invasive repair of pectus excavatum
ㅡㅡㅡㅡAngela Niedbala; Michael Adams; William C Boswell; John M Considine
The American Surgeon; Jun 2003; 69, 6; pg. 530
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Esophageal atresia (Gross type A)
Traditional Management:
– esophagostomy+gastrostomy (1st stage)
– esophageal replacement (2nd stage)
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• Recent Trend: Primary esophageal anastomosis in
the early new born period
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Foker JE, Linden BC, Boyle EM Jr, et al. Development of a
true primary repair for the full spectrum of esophageal atresia.
Ann Surg 1997;226:533–541.
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?
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Al Qahtani AR, Yazbeck S, Rosen NG, et al. Lengthening
technique for long gap esophageal atresia and early anastomosis.
J Pediatr Surg 2003;38:737–739.
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Gauderer MW. Delayed blind-pouch apposition, guide wire
placement, and nonoperative establishment of luminal continuity
in a child with long gap esophageal atresia. J Pediatr Surg
2003;38:906–909.
Fig 1. Pure esophageal atresia. Even with pressure
on the Replogle tube, the distance between the
segments is over 5 vertebral bodies.
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Contrast study at age 9 months. On a more recent
esophagram, the anastomotic site can no longer be
clearly discerned
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Rao KL, Menon P, Samujh R, et al. Fundal tube esophagoplasty
for esophageal reconstruction in atresia. J Pediatr Surg
2003;38:1723–1725.
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Spitz L, Kiely E, Pierro A. Gastric transposition in children—a
21-year experience. J Pediatr Surg 2004;39:276–281.
173 cases
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Little DC, Rescorla FJ,Grosfeld JL, et al. Long-term analysis of
children with esophageal atresia and tracheoesophageal fistula.
J Pediatr Surg 2003;38:852–856.
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Slide Tracheoplasty
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Slide Tracheoplasty
• Rutter MJ, Cotton RT, Azizkhan RG, et al. Slide tracheoplasty for the management of complete tracheal rings. J Pediatr Surg 2003;38:928–934.
• Anton-Pacheco JL, Cano I, Garcia A, et al. Patterns of management of congenital tracheal stenosis. J Pediatr Surg 2003; 38:1452–1458.
• Tsugawa C, Nishijima E, Muraji T, et al. Tracheoplasty for long segment congenital tracheal stenosis: analysis of 29 patients over two decades. J Pediatr Surg 2003;38:1703–1706.
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Congenital Diaphragmatic Hernia
• Lung development
• Prenatal therapy
• Pulmonary hypertension
• Diaphragmatic reconstruction
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Lung Development
• Endothelial heme oxygenase-1 and nitric oxide
are important endogenous regulators of
pulmonary vascular tone, and both were found to
be deficient in the lungs of infants with severe
CDH.
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Solari V, Piotrowska AP, Puri P. Expression of heme oxygenase-1 and endothelial nitric
oxide synthase in the lung of newborns with congenital diaphragmatic hernia and
persistent pulmonary hypertension. J Pediatr Surg 2003;38:808–813.
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Li J, Hu T, Liu W, et al. Effect of epidermal growth factor on pulmonary hypoplasia in
experimental diaphragmatic hernia. Pediatr Surg 2004;39:37–42.
• Using a nitrofen model for CDH in rats,
significant reversal of pulmonary hypoplasia
and differentiation of type 2 (surfactant-
producing) pneumocytes after the maternal
administration of epidermal growth factor.
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•lung weight to body weight ratio (LW/BW).
•the radial alveolar counts (RAC)
•mean terminal bronchiole density method (MTBD)
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• randomized, prospective trial
– unexpected high survival rate to 90 days in the
control group (77%)
– the tracheal occlusion group (73%).(Harrison MR, Keller RL, Hawgood SB, et al. A Randomized trial of fetal endoscopic
tracheal occlusion for severe fetal congenital diaphragmatic hernia. N Engl J Med
2003;349:1916–1924.)
Eendoscopic Tracheal Occlusion
for CDH.
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• Premature rupture of membranes and preterm
delivery occurred more frequently in the group
receiving surgical intervention
• Fetal tracheal occlusion is not beneficial for fetuses
with a lung-to-head circumference ratio of less than
1.4, and may actually be associated with higher risk.
• Very good survival rates for infants treated at a
center with focused expertise in this condition.
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Abdominal conditions
• Chronic constipation
• Hirschsprung’s disease
• Gastroesophageal reflux
• Necrotizing enterocolitis
• Gastroschisis
• Short gut syndrome
• Acute appendicitis
• Bariatric surgery
• Biliary atresia
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Chronic Constipation
• Colonic transit time in normal children(Wagener S, Shankar KR, Turnock RR, et al. Colonic transit time—what is normal? J Pediatr
Surg 2004;39:166–169.)
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Youssef NN, Pensabene L, Barksdale E Jr, et al. Is there a role for surgery beyond
colonic aganglionosis and anorectal malformations in children with intractable
constipation? J Pediatr Surg 2004;39:73–77.
• Various surgical interventions such as subtotal or total colectomy with or without an ileoanal pull-through for patients with documented abnormal colonic motility and failures of maximal medical management may be improved.
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Ciamarra P,Nurko S, Barksdale E, et al. Internal anal sphincter achalasia in children:
clinical characteristics and treatment with Clostridium botulinum toxin. J Pediatr
Gastroenterol Nutr 2003;37:315–319.
• One unique subgroup of patients with constipation was identifiedOne unique subgroup of patients with constipation was identifiedOne unique subgroup of patients with constipation was identifiedOne unique subgroup of patients with constipation was identifiedby the group from Pittsburgh as having anal by the group from Pittsburgh as having anal by the group from Pittsburgh as having anal by the group from Pittsburgh as having anal achalasiaachalasiaachalasiaachalasia....
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• These patients may have a transient improvement in symptoms after intrasphincteric injection of botulinum toxin.
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Hirshcsprung’s disease
• an increasing trend toward single-stage surgical
correction in the newborn and later infancy
periods through a transanal mucosectomy
followed by a full-thickness colon resection and
coloanal anastomosis (Soave technique),
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Langer JC, Durrant AC, de la Torre L, et al. One-stage
transanal Soave pullthrough for Hirschsprung disease: a multicenter
experience with 141 children. Ann Surg 2003;238:
569–583.
141 patients treated at 6 different institutions
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• With an average follow up of 20 months, more than 80% of patients appeared to have normal bowel movements.
• The advantages of this approach include its safety, earlier resumption of feeding, minimal pain, and earlier discharge from the hospital.
• In a report from Finland, neonatal patients undergoing this procedure had more significant perianal excoriation and need for anal dilations when compared with older infants.
• Minford and associates found that the medium-term functional outcomes were similar, but the transanal approach was associated with a greater risk for enterocolitis and anastomoticstricture formation.
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Kumar R, Mackay A, Borzi P. Laparoscopic Swenson
procedure—an optimal approach for both primary and secondary
pull-through for Hirschsprung’s disease. J Pediatr Surg
2003;38:1440–1443.
laparoscopic-assisted
coloanal anastomosis
(Swenson procedure)
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Pathogenesis of HD and Cause
for postoperative enterocolitis
• Diminished expression of Diminished expression of Diminished expression of Diminished expression of muc2, muc2, muc2, muc2, a protective epithelial a protective epithelial a protective epithelial a protective epithelial mucinmucinmucinmucin, was found to be reduced , was found to be reduced , was found to be reduced , was found to be reduced in patients with HD and undetectable in patients with HDin patients with HD and undetectable in patients with HDin patients with HD and undetectable in patients with HDin patients with HD and undetectable in patients with HD----associated enterocolitis. associated enterocolitis. associated enterocolitis. associated enterocolitis. (Mattar AF, Coran AG, Teitelbaum DH. MUC-2 mucin production in Hirschsprung’s disease:
Possible association with enterocolitis development. J Pediatr Surg 2003;38:417–421)
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Farrugia MK, Alexander N, Clarke S, et al. Does transitional
zone pull-through in Hirschsprung’s disease imply a poor
prognosis? J Pediatr Surg 2003;38:1766–1769.
• The presence of hypoganglionosis (considered to be the
transitional zone) within the pulled-through bowel used
for anastomosis was also a factor associated with a
greater frequency of enterocolitis and need for revisional
surgery
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Gastroesophageal Reflux
• Surgical correction of gastroesophageal reflux is
frequently needed in neurologically impaired children
to facilitate feeding and promote weight gain.
• Unfortunately, recurrent reflux and hiatal hernia
occur with greater frequency in this population.
• This year, two European studies demonstrated
equivalent outcomes for laparoscopic fundoplication
versus open procedures in the management of
neurologically impaired children.
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Takamizawa S, Tsugawa C,Nishijima E, et al. Laryngotracheal
separation for intractable aspiration pneumonia in neurologically
impaired children: experience with 11 cases. J Pediatr
Surg 2003;38:975–977.
• A novel method for managing the most severe cases of recurrent
reflux in neurologically impaired patients was described by
Takamizawa and associates and consists of complete laryngotracheal
separation
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Islam S, Teitelbaum DH, Buntain WL, et al. Esophagogastric
separation for failed fundoplication in neurologically impaired
children. J Pediatr Surg 2004;39:287–291.
• Another approach is to disconnect the distal esophagus from the Another approach is to disconnect the distal esophagus from the Another approach is to disconnect the distal esophagus from the Another approach is to disconnect the distal esophagus from the stomach stomach stomach stomach and perform a and perform a and perform a and perform a RouxenRouxenRouxenRouxen---- Y Y Y Y esophagojejunostomyesophagojejunostomyesophagojejunostomyesophagojejunostomy. . . .
• This was reported to alleviate reflux in nine children with seveThis was reported to alleviate reflux in nine children with seveThis was reported to alleviate reflux in nine children with seveThis was reported to alleviate reflux in nine children with severe re re re neurologicneurologicneurologicneurologicimpairment.impairment.impairment.impairment.
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NEC
• An intriguing report from Hungary identified a reduced
frequency of polymorphisms for the gene encoding
interleukin-4 in very low birthweight infants with NEC.
• These findings suggest that functional genetic
polymorphisms might influence cytokine production
capacity, conferring susceptibility to the development of
NEC– (Treszl A, Heninger E, Kalman A, et al. Lower prevalence of IL-4 receptor alpha-
chain gene G variant in very-low-birth weight infants with necrotizing enterocolitis.
J Pediatr Surg 2003;38:1374–1378.)
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Sharma R, Tepas JJ III,Mollitt DL, et al. Surgical management
of bowel perforations and outcome in very low-birth-weight
infants ( or 1,200 g). J Pediatr Surg 2004;39:190–194.
• The best treatment for perforated NEC is the subject of a current randomized, multicenter clinical trial and compares laparotomy with intestinal resection versus bedside peritoneal drainage (PD) alone.
• Sharma and colleagues reviewed their experience with these two methods of management in very low birthweight infants ( 1,200 g) and found that in the presence of clinical evidence for necrotic gut or profound abdominal infection, laparotomy was considered a better choice.
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• In a series from Loma Linda, CA, PD was
associated with survival rates that were similar to
published series of infants with NEC treated by
formal laparotomy.
• But the interval between PD and full enteral
nutrition was long, and the incidence of
nonabdominal infectious complications and
cholestasis was substantial
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Short Gut Syndrome
• The group from Cincinnati reported on the appearance of The group from Cincinnati reported on the appearance of The group from Cincinnati reported on the appearance of The group from Cincinnati reported on the appearance of a a a a factor(sfactor(sfactor(sfactor(s) within the serum of resected animals capable ) within the serum of resected animals capable ) within the serum of resected animals capable ) within the serum of resected animals capable of stimulating intestinal epithelial cell growth in vitro.of stimulating intestinal epithelial cell growth in vitro.of stimulating intestinal epithelial cell growth in vitro.of stimulating intestinal epithelial cell growth in vitro.– (Juno RJ, Knott AW, Erwin CR, et al. A serum factor(s) after small bowel resection induces intestinal
epithelial cell proliferation: effects of timing, site, and extent of resection. J Pediatr Surg 2003;38:868–874)
• In other studies from this same group, signaling by the In other studies from this same group, signaling by the In other studies from this same group, signaling by the In other studies from this same group, signaling by the intestinal epidermal growth factor receptor was found to intestinal epidermal growth factor receptor was found to intestinal epidermal growth factor receptor was found to intestinal epidermal growth factor receptor was found to regulate the expression of select regulate the expression of select regulate the expression of select regulate the expression of select bclbclbclbcl----2 2 2 2 family members to family members to family members to family members to govern the adaptive apoptosis response.govern the adaptive apoptosis response.govern the adaptive apoptosis response.govern the adaptive apoptosis response.– (Knott AW, Juno RJ, Jarboe MD, et al. EGF receptor signaling affects bcl-2 family gene expression and
apoptosis after massive small bowel resection. J Pediatr Surg 2003;38:875–880)
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Kim HB, Lee PW, Garza J, et al. Serial transverse enteroplasty
for short bowel syndrome: A case report. J Pediatr Surg 2003;
38:881–885.
• Several novel techniques have been evaluated
to manage children with short gut syndrome.
• The first clinical case for the serial transverse
enteroplasty (STEP) procedure was reported
by Kim and colleagues, with improved
intestinal length and absorptive function in a
child who had previously been subjected to a
Bianchi intestinal lengthening procedure.
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Rocha MM, Martins JL, Patrcio F, et al. Are there any structural
alterations in a neovascularized jejunal segment by omentoenteropexy?
A histologic and immunohistochemistry study.
J Pediatr Surg 2003;38:1141–1146.
• Another ingenious model for bowel lengthening consists Another ingenious model for bowel lengthening consists Another ingenious model for bowel lengthening consists Another ingenious model for bowel lengthening consists of of of of pexingpexingpexingpexing the the the the omentumomentumomentumomentum to the to the to the to the antimesentericantimesentericantimesentericantimesenteric surface of surface of surface of surface of the bowel and performing a subsequent operation to the bowel and performing a subsequent operation to the bowel and performing a subsequent operation to the bowel and performing a subsequent operation to separate the bowel into two tubesseparate the bowel into two tubesseparate the bowel into two tubesseparate the bowel into two tubes. The blood supply to . The blood supply to . The blood supply to . The blood supply to one is based on the native mesentery and the other is one is based on the native mesentery and the other is one is based on the native mesentery and the other is one is based on the native mesentery and the other is based on the based on the based on the based on the omentumomentumomentumomentum....
• Rocha and colleagues investigated the structural Rocha and colleagues investigated the structural Rocha and colleagues investigated the structural Rocha and colleagues investigated the structural alterations in this segment of alterations in this segment of alterations in this segment of alterations in this segment of neovascularizedneovascularizedneovascularizedneovascularized jejunum jejunum jejunum jejunum and found that the bowel caliber was increased and the and found that the bowel caliber was increased and the and found that the bowel caliber was increased and the and found that the bowel caliber was increased and the number of number of number of number of myentericmyentericmyentericmyenteric neurons was reduced.neurons was reduced.neurons was reduced.neurons was reduced.
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Holterman MJ, Holterman AL, Carrol R, et al. Living-related
bowel transplantation to treat short bowel syndrome in a fouryear-
old child: a case report. J Pediatr Surg 2003;38:1763–
1765.
• Finally, a living-related bowel transplant was
reported by the group in Chicago from the mother
to a 4-year-old child with short gut syndrome.
• At the time of this report, the patient was at home
with excellent bowel and liver function, off
parenteral nutrition, and on a regular diet.
• No rejection has been encountered.
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Minimally invasive surgery
• Thymectomy for myasthenia gravis
• Segmental bowel resection for Crohn’s disease
• Decapsulation of congenital splenic cysts
• Treatment of spontanenous pneumothorax
• Simple stab incisions as a means to avoid additional
cannulas for instrument
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Fetal surgery
• The investigative activity concerning fetal
intervention remains robust; more than 400
articles appeared
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CHOS
• Lim and colleagues from the Children’s Hospital of Philadelphia reported on the management of congenital high airway obstruction syndrome (CHAOS) in five patients.
• In this series, two patients died before intervention; the remaining three patients survived after management with the ex-utero intrapartum treatment (EXIT) strategy designed to secure a stable airway while uteroplacentalcirculation is maintained– Lim FY, Crombleholme TM, Hedrick HL, et al. Congenital high airway obstruction syndrome: natural history and management. J Pediatr
Surg 2003;38:940–945.
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Twin-twin transfusion syndrome
(TTTS)
• an abnormal communication between placental
blood vessels, resulting in a steal of placental
blood flow from one twin to the other.
• NIH-sponsored, multicenter, randomized,
prospective trial and involves ablation of the
interconnecting placental blood vessels.
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Bussey JG, Luks F, Carr SR, et al.Minimal-access fetal surgery
for twin-to-twin transfusion syndrome. Surg Endosc 2004;18:
83–86.
• The group from Brown University recently
described their experience with fetoscopic laser
treatment of TTTS, with an overall fetal salvage
of 73%.
• All but 2 of 11 patients in their series
demonstrated immediate and significant
improvement in TTTS.
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Myelomeningocele
• an NIH funded randomized, multicenter trial.
• An initial experience from the group at the University of California, San Francisco, evaluated three different fetal interventions, including fetoscopic repair, fetoscopic patching, or limited maternal hysterotomy and microsurgical three layered repair.
– (Farmer DL, von Koch CS, Peacock WJ, et al. In utero repair of myelomeningocele: experimental pathophysiology, initial clinical experience, and outcomes. Arch Surg 2003;138:872–878.)
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• Fetoscopic repair, although feasible, did not yield optimal surgical results.
• Open surgical repair before 22 weeks’ gestation was physiologically sound and the most technically feasible.
• One-third of patients appeared to be spared the need for a shunt at age 1 year, but improvement in distal neurologic function was less clear.
• Moreover, fetal mortality was associated with this procedure.
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Open Fetal Myelomeningocele Repair
by the Philadelphia
• Their early experience with fetal myelomeningocele
repair was associated with a decreased need for
ventriculoperitoneal shunting, arrest or slowing of
progressive ventriculomegaly, and consistent
resolution of hindbrain herniation.– (Johnson MP, Sutton LN, Rintoul N, et al. Fetal myelomeningocele repair: short-
term clinical outcomes. Am J Obstet Gynecol 2003;189:482–487)
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Thank you