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flat, nonpalpable, but visually distinct, with color different from normal skin, <1cm; ex. freckles, flat nevi
larger than a few cm in diameter, firm or soft, deeper into the dermis; may be benign or malignant, although most people think of cancer
superficial, raised, transient, and erythmatous, slightly irregular shape due to edema (fluid held diffusely in the tissues); ex. TB skin test, hives
BLISTER; elevated cavity containing free fluid; up to 1cm; clear serum flows if wall is ruptured
larger than 1cm; usually single chambered; superficial in epidermis; thin walled, so it ruptures easily; ex. chicken pox, shingles
Turbid fluid (pus) in cavity; circumscribed and elevated; ex. acne (previous test question!!)
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