This is excellent information! Thank you so much for posting it. The method described for locating the cecum is very similar to what I was taught during my colon hydrotherapy training.
One of my instructors, Catherine Cavanaugh was an R.N. and she must have had larger hands than me because while giving me a colonic she was able to place her thumb on my belly button, and her little finger on the point of my hip, and had me feel halfway between where my cecum was, as she massaged during the release cycle.