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Which of the following describes nodules?

  1. Flat lesions

  2. Epidermal cysts

  3. Elevated, solid lesions

  4. Fluid-filled lesions

The correct answer is: Elevated, solid lesions

Nodules are defined as elevated, solid lesions that form beneath the skin surface. They are typically larger than papules and can vary in size. Because nodules are composed of solid tissue, they differ from lesions that are flat or fluid-filled. The solid nature of nodules often results from various factors, such as localized inflammation, infection, or a benign or malignant growth. Each characteristic identifies nodules distinctly from other skin formations, such as cysts or flat lesions, which are not elevated or solid in structure. Understanding this distinction is crucial for anyone engaging in tattooing, as it relates to skin health and potential reactions to tattooing methods.