cutaneous horn

Introduction

Hyperkeratotic roof of papular skin lesion.

Cutaneous horns may overlie:

• actinic keratosis
• squamous cell carcinoma
• wart
• seborrheic keratosis

Prognosis:

• 60% are benign
• 23% associated with premalignant lesions (actinic keratosis)
• 16% associated with malignancies (squamous cell carcinoma)

More general terms

• abnormal morphologic structure (malformation)