Post written by Zaheer Nabi, MD, DNB, from the Department of Gastroenterology, Asian Institute of Gastroenterology, Hyderabad, India. A 3-year-old girl presented with a history of constipation since early infancy. Anorectal manometry was performed, and the absence of recto-anal inhibitory reflex raised the suspicion of Hirschsprung’s disease (HD). To confirm the diagnosis of HD, rectal …