Answer:
existence of a stoma
Step-by-step explanation:
Stoma is a word of Greek origin meaning "opening", "mouth", "orifice" or "tiny pore". From the surgical point of view, refers to the opening made in the abdominal wall through colostomy, ileostomy, or even opening between two portions of the intestine in an anastomosis. The most common stoma are of intestinal and urinary origin, resulting from cancer, congenital malformation or trauma.
Endoscopic procedures within the urinary subsection, kidney subheading, are often divided based on this unique factor: existence of a stoma.