| • | AKA trichilemmal cyst, sebaceous cyst |
| • | arrives from isthmus (outer root sheath) |
| • | histology: abrupt keratization |
vs. infundibular cyst:
| • | when it is on the scalp, it is usually a pilar cyst |
| • | pilar cyst has thicker cyst wall and therefore is easier to excise intact |
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