Thursday, October 23, 2008

Openings

lesions characterized by parting or break in the skin without loss of epidermis.
examples: comedo, follicular cast, fissure, sinus

- comedo (blackhead) is keratin plug of infundibulum
- follicular cast is a superficial comedo that extends above the skin
- fissure is linear
- sinus is an inflammatory tract that exits externally

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