Epidermal Nevus Jessica M. Comstock, MD Key Facts Terminology Developmental malformation of epidermis with keratinocytic hyperplasia Etiology/Pathogenesis Epidermal nevus syndrome includes neurological, ocular, and skeletal abnormalities Clinical Issues Common sites…
Branchial Cleft Cyst Lester D. R. Thompson, MD Key Facts Terminology Branchial cleft cyst refers to congenital developmental lateral cervical cyst derived from remnants of 2nd branchial apparatus Etiology/Pathogenesis Failure…
Bronchogenic Cyst Lester D. R. Thompson, MD Key Facts Terminology Rare congenital malformation of ventral foregut Clinical Issues Pediatric population, rare in adults Midline superficial presternal or suprasternal is most…
Digital Mucous Cyst Senait W. Dyson, MD David Cassarino, MD, PhD Key Facts Terminology Solitary, dome-shaped, skin-colored to translucent papule Synonyms: Digital myxoid cyst, digital synovial cyst Etiology/Pathogenesis Most view…
Hidrocystoma (Apocrine and Eccrine) Senait W. Dyson, MD David Cassarino, MD, PhD Key Facts Terminology Cystic, dome-shaped, translucent papules with bluish hue commonly found on the eyelids Etiology/Pathogenesis Most, if…
Milial Cysts Senait W. Dyson, MD David Cassarino, MD, PhD Key Facts Terminology Small epidermoid/infundibular cyst Clinical Issues Very common Primary milial cysts Occur spontaneously and typically seen on the…
Cutaneous Keratocyst David Cassarino, MD, PhD Key Facts Terminology NBCCS cutaneous cyst/Gorlin-Goltz syndrome Rare cutaneous cyst showing features identical to oral keratocysts Etiology/Pathogenesis Most cases are associated with NBCCS Rare…
Steatocystoma (Multiplex) Steven D. Billings, MD Key Facts Terminology Benign cyst derived from the sebaceous duct that may present as multiple lesions (steatocystoma multiplex) or as a single lesion (simplex)…
Vellus Hair Cyst Senait W. Dyson, MD Key Facts Terminology Similar histology to epidermoid cyst with the addition of intraluminal vellus hairs Clinical Issues Small, discrete, follicular papules; often on…
HPV-related Epidermal Cyst Elsa F. Velazquez, MD David Cassarino, MD, PhD Key Facts Etiology/Pathogenesis HPV-related cysts Verrucous cysts have been reported to be associated with HPV-20 and -34 Epidermoid cyst…
