In this episode, Dr. Peter Lu and Dr. Jennifer Lee talk to Dr. Jacob Langer about Hirschsprung disease, including how to diagnose and treat the child with Hirschsprung disease who continues to struggle with constipation or fecal incontinence after surgery.  Dr. Langer is a pediatric surgeon and for many years was the Chief of General and Thoracic Surgery at the Hospital for Sick Children (SickKids) in Toronto, Canada.  He is an internationally-recognized leader in the field and pioneered several surgical techniques and procedures that are widely used today in the care for children with Hirschsprung disease.  He is also a musician -- you can listen to his music here. Learning Objectives: Discuss the pathophysiology and diagnosis of Hirschsprung diseaseRecognize the differences among surgical techniques for treating Hirschsprung disease and the impact these differences can have on long-term symptomsUnderstand the evaluation and differential diagnosis of the child with Hirschsprung disease who continues to struggle with obstructive symptoms or soiling after surgeryThis episode is eligible for CME credit!  Once you have listened to the episode, click this link to claim your credit.  Credit is available to NASPGHAN members (if you are not a member, you should probably sign up).  And thank you to the NASPGHAN Professional Education Committee for their review! Support the showAs always, the discussion, views, and recommendations in this podcast are the sole responsibility of the hosts and guests and are subject to change over time with advances in the field. Follow us on Twitter, Facebook and Instagram for all the latest news and upcoming episodes!