HOSA Dental Terminology Practice

What characterizes xanthoma?

1. Inflamed mucous membranes

2. Small yellow nodules that generally occur in subcutaneous tissue

3. Artificial models used for teaching dental techniques

4. Bony surfaces at the joints

The correct answer is: Small yellow nodules that generally occur in subcutaneous tissue

Xanthoma is characterized by the presence of small yellow nodules that generally occur in subcutaneous tissue. These nodules are formed due to the accumulation of lipids, and they typically indicate underlying metabolic issues, such as hyperlipidemia. The yellow appearance comes from the deposition of cholesterol and other lipids in the histiocytes, which are a type of immune cell. This condition is important in a clinical context because it can serve as an external manifestation of systemic problems regarding lipid metabolism. Recognizing xanthomas can lead healthcare professionals to investigate potential risks related to cardiovascular diseases. The other options reference different conditions or topics that do not relate to the characteristics of xanthomas. The mention of inflamed mucous membranes pertains to various inflammatory conditions, while artificial models are relevant to dental education, and bony surfaces at joints indicate a focus on skeletal or orthopedic conditions rather than dermatological issues.