What is Seborrheic Keratosis?
Benign squamous proliferation
Common in elderly
Appearance of SK
“Stuck on appearance”
Raised, discolored plaque, Characterized by keratin pseudocysts
What is Leser-Trelat sign?
Sudden onset of multiple SK. May suggest underlying carcinoma of GI tract.
What is Acanthosis Nigricans?
Epidermal hyperplasia with darkening of the skin.
Primarily in axilla or groin.
What receptor is modified in Acanthosis Nigricans?
FGFR3