1. ( Botany) a fringe of pointed teeth surrounding the opening of a moss capsule. 2. ( Zoology) any of various parts surrounding the mouth of invertebrates, such as echinoderms and earthworms, and of protozoans. [C18: from New Latin peristoma, from peri- + Greek stoma mouth]

What is peristoma?

The peristomal skin is the skin right around the stoma. It's the skin that the ostomy wafer adheres to. In adults, the are of peristomal skin is approximately 4 x 4 inches around the stoma.

How do you spell Parastomal?

What is a parastomal hernia? The term parastomal hernia is used to describe a bulge or swelling around/under the stoma that leads to problems with stoma function and appliance security.