THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -During a pull-through procedure, a surgeon removes the part of the large intestine that is missing nerve cells. The surgeon then connects the healthy part of the large intestine to the anus. Surgeons may perform the pull-through procedure as either laparoscopic or open surgery.

Detailed explanation-2: -The principle of Duhamel’s technique is to exclude the rectum instead of removing it. The proximal normally innervated colon is pulled through a simple cleavage of the rectal space. The colon then appears at the posterior wall of the anal canal.

Detailed explanation-3: -Rectal biopsy: This test gives the definitive diagnosis. It involves taking a sample of the cells in the rectum for a pathologist to view under a microscope. The pathologist confirms that a child has Hirschsprung disease based on the absence of ganglion cells and other abnormal nerve-related findings.