Elevations (above the level of skin)


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PAPULE:  A solid or cystic elevation less than 1.0 cm in diameter (example: eruptive xanthoma).

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NODULE:  A solid or cystic elevation 1.0 cm or more, but less than 2.0 cm, in diameter (example: dermatofibroma).

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TUMOR:  A solid or cystic elevation 2.0 cm or more in diameter (example: follicular cyst, infundibular type).

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PLAQUE:  A lesion that rises slightly above the surface of the skin and is larger than 1.0 cm in greatest dimension (example: psoriasis).

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CORD:  A string-like or rope-like structure of variable length (example: hypertrophic scar).

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VESICLE:  A noncystic transparent fluid-filled elevation less than 1.0 cm in greatest dimension (example: herpes simplex).

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BULLA:  A noncystic, transparent, fluid- filled elevation 1.0 cm or larger in greatest dimension (example: bullous pemphigoid).

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PUSTULE:  An elevation formed of pus (example: drug eruption).

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KERATOSIS:  A horny projection from the skin that often takes the form of a spike or spine (example: Bowen's disease).

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SCALE:  A collection of horn that is visible on the skin as a flake (example: psoriasis).

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CRUST:  A heap composed of inspissated plasma that contains white blood cells, red blood cells, or both (example: impetigo).