Penile Cutaneous Horn

Cutaneous horn (cornu cutaneum) is a rare lesion consisting of a projectile, conical, dense, hyperkeratotic nodule which resembles the horn of an animal.[1] These occur mostly in sun-exposed parts and are typically found on the face and the scalp, but may also occur on the hands, eyelids, nose, chest, neck, shoulder and penis.[2] The horn is composed of compact keratin. Although the cutaneous horn may develop over a normal skin, these more often develop over some preexisting skin conditions like warts, keratosis, naevi, trauma, burns, lupus vulgaris, and even on an epithelioma.[3] Their occurrence on the penis is extremely uncommon. We report a case of cutaneous horn on penis.