Trichilemmal cyst with xeroderma pigmentosum in pediatric patient – A case report with review of the literature

Pediatric trichilemmal cysts associated with xeroderma pigmentosum (XP) are rare. We report the case of an 11-year-old child with XP who presented with an ulcerative lesion on the right temporal region. A wedge biopsy of the lesion was performed under local anesthesia, and histopathological examination confirmed a benign, encapsulated trichilemmal cyst. The ulcerative lesion was treated conservatively, with no recurrence or complications reported in the 24 months following treatment. We recommend considering trichilemmal cysts as a differential diagnosis in cases of XP, alongside basal cell and squamous cell malignancies. To the best of our knowledge, this is the first reported case of a trichilemmal cyst in a child with XP.