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Principles of Dermatological Diagnosis - Dermatology

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More Primary Skin Lesions<br />

Papule: Papule:<br />

elevated “bump bump” < 0.5 cm<br />

Nodule: Nodule:<br />

elevated “bump bump” > 0.5 cm, frequently in<br />

the dermis or fat and deeper than a plaque<br />

Large nodules, >2cm are <strong>of</strong>ten referred to as<br />

tumors<br />

Plaque: Plaque:<br />

Plateau-like Plateau like lesion > 0.5 cm<br />

Wheal: Wheal:<br />

Special plaque composed only <strong>of</strong> fluid (a<br />

hive)<br />

Cyst: Papule or nodule filled fluid or semisolid<br />

material<br />

31

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