Investigation of choice in hirschsprung disease is -
Ans. is 'a' i.e., Biopsy * The investigation of choice for diagnosis requires an adequate rectal biopsy and an experienced pathologist.* A contrast enema may show the narrow aganglionic segment, a cone and the dilated proximal bowel.
Biopsy
Manometry
Colonoscopy
Barium enema
Small & Large Intestine