Presentation
Headache.
Patient Data
Age: 50 years
Gender: Female
From the case:
Trichilemmal cyst
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Non-contrast CT scan of the brain showed no intracranial pathology.
Incidentally noted left occipital scalp subcutaneous lesion showing coarse calcification. Intact underlying calvarium. A diagnosis of trichilemmal cyst was made.
Case Discussion
Trichilemmal cysts (TC) are keratin-filled cysts with a wall resembling the external root sheath of a hair follicle. They are the most common subcutaneous cysts of the scalp.
On imaging, these lesions can be either a cystic or solid mass which may show internal foci of calcifications.
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