What is the term for an elevated, firm lesion on the skin?

• A. Cyst
• B. Patch
• C. Bulla
• D. Nodule

Answer: (D)

An elevated, firm lesion on the skin is referred to as a nodule. Nodules are solid lesions that typically extend deeper into the skin than other types of elevated lesions. They can vary in size and may be found in various skin conditions, often associated with inflammation or the growth of tissue. Their firmness and elevation distinguish them from other dermatological terms.

Cysts, while also elevated, are generally fluid-filled sacs rather than solid lesions and can have a different clinical implication. Patches are flat and not elevated, typically showing a change in color. Bullae are large fluid-filled blisters, which again differentiates them from nodules by their composition and structure. Therefore, the correct identification of a nodule allows for an accurate understanding of skin lesions and their potential diagnoses in dermatological practice.