n. 1. the removal of the outside layer (cortex) from an organ or structure, such as the kidney. 2. an operation for removing the blood clot and scar tissue that forms after bleeding into the chest cavity (haemothorax). 3. (decapsulation) the surgical removal of a *capsule from an organ; for example, the stripping of the membrane that envelops the kidney or of the inflammatory capsule that encloses a chronic abscess, as in the treatment of *empyema.
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