aka Trichilemmal Cyst, an isthmus-catagen cyst, or a "wen", is a benign (non life-threatening growth) that looks identical on examination to the more common epidermoid cyst, except that 90% of pilar cysts occur on the scalp. They tent to be more mobile and firmer than epidermoid cysts and a re derived from a different part of the hair follicle/skin. The internal contents tend to be more "homogenous"/smooth (looks different under the microscope). It is not uncommon to have multiple pilar cysts on the scalp and to have other family members to have these cysts (they tend to run in families). Treatment is for cosmetic reasons usually (people don't like the appearance of them), and excision with removal of the cyst and its contents is curative. The nice thing about this kind of "pop" is that these cysts are often thicker walled, I would say most similar to an olive. they can often be "popped" out whole which ensures that I've removed it completely, and leads to a pretty satisfying "pop".
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This video may contain dermatologic surgical and/or procedural content. The content seen in this video is provided only for medical education purposes and is not intended to be a substitute for professional medical advice, diagnosis, or treatment.