The Hirschsprung disease characterised by congenital absence of ganglion cells. is confirmed by sero muscluar biopsies of the involved bowel. hence the initial leveling colostomy/ileostomy followed by subsequent definitive pull through procedure. However only the full circumference of the pulled down bowel having ganglion cells in all four quadrants is confirmatory. https://allfixelectricales.shop/product-category/instrument-knob/