Hernia overview: Difference between revisions
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Revision as of 17:01, 16 May 2013
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Hernia Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Hernia overview On the Web |
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American Roentgen Ray Society Images of Hernia overview |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Overview
A hernia is a protrusion of a tissue, structure, or part of an organ through the muscular tissue or the membrane by which it is normally contained. The hernia has 3 parts: the orifice through which it herniates, the hernial sac, and its contents. The contents, usually portions of intestine or abdominal fatty tissue, are enclosed in the thin membrane that naturally lines the inside of the cavity. a Hernia has a potential risk of having its blood supply cut off (becoming strangulated), and the contents may become necrotic due to the lack of O2 supply.
A hernia may be likened to a failure in the sidewall of a pneumatic tire. The tire's inner tube behaves like the organ and the side wall like the body cavity wall providing the restraint. A weakness in the sidewall allows a bulge to develop, which can become a split, allowing the inner tube to protrude, and leading to the eventual failure of the tire.