Mucous Membranes. Wherever mucous membranes are included in a radiation field similar reactions will be experienced: Whether in the mouth, pharynx, esophagus, trachea, bowel, bladder or rectum, mucositis may develop.
As with the skin, the mucosa is reddened at first but then may be covered with a plaque-like fibrin similar to crusting of the skin. The mucous membrane remains moist and the surface covered by fibrin until the underlying mucosa is healed, when the fibrinous plaque is lost and the reaction healed.
The symptoms resulting from the inflammation, irritation and dysfunction caused by the mucosal reaction depend on the site of the reaction. There may be discomfort and dysphagia or cough, hoarseness and tracheitis, or dysuria and frequency, or diarrhoea and abdominal cramps. The management varies from site to site, but depends on the same principles as the care of skin reaction.
1. Avoid irritation by keeping food or stools soft and preventing trauma of any kind.
2. Local analgesic mixtures, antibiotics where indicated, and steroids may help.
3. Maintain hydration by encouragement and intravenous fluids if necessary.
4. Low fibre diet for those with bowel reaction.
5. Best of all, have patience, the reaction will heal.