What type of lesions change the structure of tissues and organs?

• A. Primary
• B. Secondary
• C. Tertiary
• D. Acute

Answer: (B)

The type of lesions that change the structure of tissues and organs are secondary lesions. Secondary lesions arise as a result of primary lesions and their progression. They typically indicate a change due to inflammation, infection, or other skin conditions that lead to alterations in the skin’s physical structure. This can include lesions such as scales, crusts, and scar tissue, which form after the initial event and represent ongoing changes to the skin's integrity.

Primary lesions, on the other hand, are the initial morphological changes that occur directly due to a disease process, such as macules, papules, and nodules. They do not reflect the ongoing or subsequent modifications to the tissue structure that secondary lesions do. Tertiary lesions are often associated with advanced stages of chronic conditions or associated systemic diseases and may not be directly classified in the same context as primary or secondary lesions. Acute refers to the duration of a condition rather than the type of lesion, denoting a brief and severe episode, rather than a structural change in the tissue.