Pyloric stenosis reconstructive surgery, what is this like?

Open stenosis: If there is stenosis and a bypass of small bowel to stomach not employed then a pyloroplasty performed. A vertical incision just above pylous extending to upper duodenum and about 5cm is created thru mucosa into muscular layer. It is then closed in a transverse direction where the top of the incision is brought midline to the lower incision opening the stenosis.