Oregon Written Tattoo Practice Test

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Prepare for the Oregon Tattoo Test. Learn using interactive flashcards and detailed questions, each with helpful hints and explanations. Equip yourself comprehensively for your written exam!

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What characterizes a nodule in skin lesions?

It is less than 1 cm
It is a raised lesion
It has both diameter and depth greater than 1 cm
It is always red and irritated

The correct answer is: It has both diameter and depth greater than 1 cm

A nodule is characterized by its size and three-dimensional structure, which typically involves both diameter and depth that are greater than 1 cm. This definition is crucial for identifying nodules in clinical practice, as they represent solid lesions that can extend beneath the surface of the skin. Nodules can be firm to the touch, and their depth distinguishes them from other types of skin lesions such as papules, which are smaller and do not extend significantly into the deeper layers of the skin. While being raised can apply to nodules as well, the defining feature of size and depth accurately describes them. Nodules can also present in a variety of colors and may not necessarily be red or irritated, which makes the characteristics described in other choices less inclusive or more specific than the general definition of a nodule. Having a diameter that exceeds 1 cm and extending into the tissue adds to the significance of their classification. Understanding this is important for proper diagnosis and treatment in dermatological practice.