Spigelian hernia

A Spigelian is the type of ventral hernia where aponeurotic fascia pushes through a hole creating a bulge. It appears in the abdomen lower quadrant between an area of dense fibrous tissue and abdominal wall muscles causing a (Spigelian aponeurosis)It is the protuberance of, omentum, adipose or bowel in that weak space between the stomach muscles, that ultimately pushes the intestines or superficial fatty tissue through a hole causing a defect. [Source: Wikipedia ]