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So an abdominal wall hernia is when an organ protrudes through the abdominal wall, which is made up of a few layers.
That layer wraps around to form the parietal peritoneum.
Then moving outwards, there’s the extraperitoneal fat, the transversalis fascia, the muscle layer with the internal and external oblique and transversus abdominis aponeurosis, and a layer of fascia, which has different names in different regions.
Anything that increases the pressure of the abdominal cavity may result in a sac that forms in the abdominal wall through which organs may protrude.
Abdominal hernias vary in size and location.
Larger hernias can put pressure on the overlying skin, causing erythema and ulceration.
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