Final answer:
Leukoplakia describes white patches on mucous membranes, such as the inner mouth, and can be a precancerous indicator. It is not cancer itself, but can signify a risk for oral cancer if not monitored.
Step-by-step explanation:
The term 'leukoplakia' literally means 'white patch' and is a term used in medicine to describe white, potentially pre-cancerous patches that can appear on mucous membranes, such as the inside of the mouth. These patches are usually benign but can be precursors to cancer, particularly in the context of tobacco or alcohol use. Leukoplakia itself is not cancer, but its presence may indicate an increased risk of developing oral cancer if left unchecked.
The physical exam findings that you mention, such as cracks or sores on the outer surface of the lips (cheliosis), inflammation and redness of the tongue, and moist, scaly skin inflammation (seborrheic dermatitis) are not direct symptoms of leukoplakia but can be associated with other conditions that affect oral health. It's crucial for healthcare professionals to monitor leukoplakic patches for any signs of change that might indicate the development of oral cancer.