Andrea Bischoff, MD
Professor, Surgery-Peds Surgery

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Languages: English, Portuguese, Spanish
Department: Surgery-Peds Surgery

Professional Titles

  • Pediatric Surgeon

Research Interests

My research interests are primarily focused on long-term outcomes of patients born with colorectal congenital problems, their surgical reconstruction and associated malformations. I also believe in education and helping other countries to achieve excellence upon treatment of these conditions.


  • Associate Professor (2016)
    School of Medicine, Surgery
    Pediatric Colorectal Surgery; Anorectal and Urogenital Malformations (imperforate anus, cloaca, cloacal exstrophy, vaginal agenesis); Hirschsprung Disease; Total Colonic Aganglionosis; Bowel Management (fecal incontinence and idiopathic constipation).


  • Morrison ZD, Reyes-Ferral C, Mansfield SA, Alemayehu H, Bowen-Jallow K, Tran S, Santos MC, Bischoff A, Perez N, Lopez ME, Langham MR Jr, Newman EA. Diversity, Equity, and Inclusion: A strategic priority for the American Pediatric Surgical Association. J Pediatr Surg. 2020 Dec 8. [Epub ahead of print] PubMed PMID: 33309300
  • Peña A, De La Torre L, Belkind-Gerson J, Lovell M, Ketzer J, Bealer J, Bischoff A. Enema-Induced spastic left colon syndrome: An unintended consequence of chronic enema use. J Pediatr Surg. 2020 Oct 31. [Epub ahead of print] PubMed PMID: 33199058
  • De La Torre L, Zornoza M, Peña A, Bischoff A, Ketzer J, Ruiz A. Transanal rectal mucosectomy and muscular plication: A new technique for rectal prolapse in patients with an anorectal malformation. J Pediatr Surg. 2020 Nov;55(11):2531-2535. PubMed PMID: 32586611
  • Vuille-Dit-Bille RN, de La Torre L, Hall J, Ketzer J, Peña A, Bischoff A. Hirschsprung disease and anorectal malformations - An uncommon association. J Pediatr Surg. 2020 May 16. [Epub ahead of print] PubMed PMID: 32507634
  • Bischoff A, de La Torre L, Peña A. Comparative effectiveness of imaging modalities for preoperative assessment of anorectal malformation in the pediatric population. J Pediatr Surg. 2020 Feb;55(2):354. PubMed PMID: 31718867
  • Bischoff A, de La Torre L, Peña A. Comparative Effectiveness of Imaging Modalities for Preoperative Assessment of Anorectal Malformation in the Pediatric Population. J Pediatr Surg. 2019 Oct 27. [Epub ahead of print] PubMed PMID: 31718867
  • Hecht S, Hall J, Ketzer J, Walker J, Trecartin A, Wilcox D, Peña A, Bischoff A. Ectopic ureters in anorectal malformations. Pediatr Surg Int. 2019 Sep;35(9):1005-1008. PubMed PMID: 31278478
  • Judd-Glossy L, Ariefdjohan M, Curry S, Ketzer J, Pena A, Bischoff A. A survey of adults with anorectal malformations: perspectives on educational, vocational, and psychosocial experiences. Pediatr Surg Int. 2019 Sep;35(9):953-961. PubMed PMID: 31270673
  • Dewberry L, Trecartin A, Peña A, Pierre MS, Bischoff A. Systematic review: sacral nerve stimulation in the treatment of constipation and fecal incontinence in children with emphasis in anorectal malformation. Pediatr Surg Int. 2019 Sep;35(9):1009-1012. PubMed PMID: 31256299
  • Bischoff A, Alaniz VI, Trecartin A, Peña A. Vaginal reconstruction for distal vaginal atresia without anorectal malformation: is the approach different?. Pediatr Surg Int. 2019 Sep;35(9):963-966. PubMed PMID: 31256298
  • Bischoff A, Trecartin A, Alaniz V, Hecht S, Wilcox DT, Peña A. A cloacal anomaly is not a disorder of sex development. Pediatr Surg Int. 2019 Sep;35(9):985-987. PubMed PMID: 31256297
  • Trecartin AC, Peña A, Lovell M, Bruny J, Mueller C, Urquidi M, Bischoff A. Anal duplication: is surgery indicated? A report of three cases and review of the literature. Pediatr Surg Int. 2019 Sep;35(9):971-978. PubMed PMID: 31256296
  • Dewberry L, Peña A, Meyers ML, Mirsky DM, Bischoff A. Differentiating presacral masses in anorectal malformations and isolated sacrococcygeal teratomas. Pediatr Surg Int. 2019 Sep;35(9):979-983. PubMed PMID: 31256295
  • Bischoff A, Bealer J, Wilcox DT, Peña A. Error traps and culture of safety in anorectal malformations. Semin Pediatr Surg. 2019 Jun;28(3):131-134. PubMed PMID: 31171146
  • Goddard GR, Rymeski B, Jenkins T, Mullapudi B, Dickie BH, Bischoff A, Peña A, Levitt MA, Frischer JS. A comparison of surgical complications after appendicostomy and neoappendicostomy in pediatric patients. J Pediatr Surg. 2019 Aug;54(8):1660-1663. PubMed PMID: 31036369
  • Peña A, Bealer J, Bischoff A. Re: "Assessing the long term manometric outcomes in patients with previous laparoscopic anorectoplasty (LARP) and posterior sagittal anorectoplasty (PSARP)" by Chung, et al. JPS. Vol. 53, no. 10 October 2018?pp1933-1936. J Pediatr Surg. 2019 Jun;54(6):1262. PubMed PMID: 30851957
  • Bischoff A, Peña A, Ketzer J, Campbell K, O' Neill B, Stence N, Mirsky D. The conus medullaris ratio: A new way to identify tethered cord on MRI. J Pediatr Surg. 2018 Nov 6. [Epub ahead of print] PubMed PMID: 30518494
  • Peña A, Bischoff A. Commentary to "Fact or myth? The long shared common wall between the fistula and the urethra in male anorectal malformations with urethral bulbar fistula". Pediatr Surg Int. 2018 Nov 15. [Epub ahead of print] PubMed PMID: 30430283
  • Samuk I, Bischoff A, Freud E, Pena A. Tethered cord in children with anorectal malformations with emphasis on rectobladder neck fistula. Pediatr Surg Int. 2018 Nov 9. [Epub ahead of print] PubMed PMID: 30413919
  • Schletker J, Edmonds T, Jacobson R, Ketzer J, Hall J, Trecartin A, Peña A, Bischoff A. Bowel management program in patients with spina bifida. Pediatr Surg Int. 2018 Nov 7. [Epub ahead of print] PubMed PMID: 30402681
  • Dewberry L, Peña A, Mirsky D, Ketzer J, Bischoff A. Sacral agenesis and fecal incontinence: how to increase the index of suspicion. Pediatr Surg Int. 2018 Nov 3. [Epub ahead of print] PubMed PMID: 30392128
  • Acker S, Peña A, Wilcox D, Alaniz V, Bischoff A. Transition of care: a growing concern in adult patients born with colorectal anomalies. Pediatr Surg Int. 2018 Nov 3. [Epub ahead of print] PubMed PMID: 30392127
  • Bischoff A, Brisighelli G, Dickie B, Frischer J, Levitt MA, Peña A. Idiopathic constipation: A challenging but manageable problem. J Pediatr Surg. 2018 Sep;53(9):1742-1747. PubMed PMID: 29079312
  • Bischoff A, Frischer J, Knod JL, Dickie B, Levitt MA, Holder M, Jackson L, Peña A. Damaged anal canal as a cause of fecal incontinence after surgical repair for Hirschsprung disease - a preventable and under-reported complication. J Pediatr Surg. 2016 Sep 4. [Epub ahead of print] PubMed PMID: 27624566
  • Bischoff A, Bealer J, Peña A. Critical analysis of fecal incontinence scores. Pediatr Surg Int. 2016 Aug;32(8):737-41. PubMed PMID: 27357400
  • Samuk I, Bischoff A, Hall J, Levitt M, Peña A. Anorectal malformation with rectobladder neck fistula: A distinct and challenging malformation. J Pediatr Surg. 2016 Oct;51(10):1592-6. PubMed PMID: 27345453
  • Bischoff A. The surgical treatment of cloaca. Semin Pediatr Surg. 2016 Apr;25(2):102-7. PubMed PMID: 26969234
  • Gupta A, Bischoff A. Pathology of cloaca anomalies with case correlation. Semin Pediatr Surg. 2016 Apr;25(2):66-70. PubMed PMID: 26969228
  • Colares JH, Purcaru M, da Silva GP, Frota MA, da Silva CA, Melo-Filho AA, Bischoff A, Peña A. Impact of the Bowel Management Program on the quality of life in children with fecal incontinence. Pediatr Surg Int. 2016 May;32(5):471-6. PubMed PMID: 26875175
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Practice Locations

Children's Hospital Colorado Anschutz Medical Campus
13123 East 16th Ave
Aurora, CO 80045

Hospital Affiliation
  • Children's Hospital Colorado
  • University of Colorado Hospital

Specialty Information

  • Pediatric Surgery
  • Colon and Rectal Surgery
Conditions & Treatments
  • Surgery
Clinical Interests
My many clinical interests include congenital colorectal problems such as Anorectal and Urogenital malformation (imperforate anus, cloaca, cloacal exstrophy, vaginal agenesis); Hirschsprung Disease; Total Colonic Aganglionosis; Bowel Management (fecal incontinence and idiopathic constipation).

Care Philosophy
I strive to provide the best surgical and clinical care for my patients. I believe in devoting time to patients and family explaining and discussing prognosis, long-term expectations as well as surgical reconstruction and possible future implications. I also believe in following our patients through out life.

Personal Interests
In my spare time, I enjoy spending time with family, watching good movies, and practicing outside sports (running, biking, swimming). I also enjoy travelling the world to try to improve colorectal care for children everywhere.

Volunteer Activities
Travelling the world to try to improve colorectal care everywhere. I have travelled to more than 30 different countries to give lectures and live surgical demonstrations on how to treat congenital colorectal problems.

Public Speaking
Surgical Treatment of Colorectal Problems in Children (from prenatal to long-term outcomes) - 3 day intensive workshop with live surgical demonstrations.

General Information

Download CV
Languages: English, Portuguese, Spanish
Department: Surgery-Peds Surgery