Hernias happen when there's an abnormal bulging of an organ or part of an organ through a weakness or gap in its containing wall. A spigelian hernia is a rare kind that's often difficult to diagnose.
A spigelian hernia forms through the spigelian aponeurosis. This is a layer of abdominal muscles that rests between the lateral edge of the rectus muscle and the linea semilunaris. An untreated ...