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Pathology · single question

What is the definition of a MACULA?

  1. Irregular borders, flat
  2. Well-circumscribed lesion that is raised (elevated) above the surface
  3. Well-circumscribed, flat lesion (not raised, not depressed)
  4. Irregular borders, raised
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Correct answer: C. Well-circumscribed, flat lesion (not raised, not depressed)

  • A. Incorrect. Irregular borders with flat configuration describes a patch — which is similar to a macule but larger (>1 cm) and not as clearly delineated.
  • B. Incorrect. A raised, well-circumscribed lesion is a PAPULE (if <5 mm) or NODULE (if >5 mm).
  • C. Correct. A MACULA is a WELL-CIRCUMSCRIBED, FLAT color change in the mucosa or skin — no elevation or depression. It is purely a color change without any change in surface texture or thickness. Examples: melanotic macule, café-au-lait spot, amalgam tattoo.
  • D. Incorrect. Irregular borders with raised configuration describes a plaque.

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