Welcome to EmpowHER. The mucosa is a mucus-secreting (lubricating) membrane that lines the digestive tract, including the colon and the rectum. The rectum is the last stop before stool, what remains after digestion, is excreted. Erythematous mucosa occurs when the mucosa becomes red due to increased blood flow, usually as part of an inflammatory process. The most common type of erythematous mucosa of the rectum, proctitis, can be caused by sexually transmitted diseases, inflammatory bowel diseases, other infections or radiation therapy. It's important to have your doctor explain what the results of colonoscopy are including this condition.
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