In medicine, this may be inguinal or hiatus (6)
I believe the answer is:
hernia
(Other definitions for hernia that I've seen before include "Rupture, organ penetrating the abdomen" , "Rupture, protrusion of organ through abdominal wall" , "Breaking of an organ through its lining" , "Protruding rupture" , "Protrusion of organ through wall of abdomen, a rupture" .)