Seborrheic Keratosis – Benign Lichenoid Keratosis

February 7th, 2011

Benign Lichenoid Keratoses, also called Lichen Planus Like Keratoses, are one of the most common skin lesions I encounter in both my The Woodlands dermatology and Conroe dermatology offices.  Clinically, Benign Lichenoid Keratoses are red slightly scaly plaques that are almost clinically identical to superficial basal cell cancers, thus they are usually biopsied to rule out a skin cancer.  They are very common in middle aged white women and are commonly found on the arms, hands and chest.  Histologically, they are identical to lichen planus with a band like inflammatory lichenoid infiltrate in the papillary dermis.  Benign Lichenoid Keratoses may arise from solar lentigos (freckles).  As Benign Lichenoid Keratoses can be itchy and symptomatic, treatment with liquid nitrogen is usually effective.