Erythematous mucosa in the colonErythematous mucosa in the colon, defined as an increased redness of the mucosa, due to an increase in its hemoglobin content because of increased blood flow (a). This should be distinguished from a congested mucosa, defined as a swelling of the mucosa due to an increase in the thickness of the mucosa, occurring most often in association with an inflammatory process where permeability of cell membranes is altered and the extracellular osmolarity is modified (b). Reproduced, with permission, from Colonoscopy (ed. J. D. Waye, D. K. Rex, and C. B. Williams), Blackwell Publishing (2003).
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This image is taken from Reproduced, with permission, from Colonoscopy (ed. J. D. Waye, D. K. Rex, and C. B. Williams), Blackwell Publishing (2003).
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