Keratoacanthoma in Xeroderma Pigmentosum: An Entity Beyond Guess

Xeroderma pigmentosum (XP) is a rare autosomal recessive disorder, characterized by photosensitivity, pigmentary changes, premature skin aging and increase in risk of developing malignant neoplasms of both skin and eyes. Keratoacanthoma (KA) is a rapidly growing benign skin tumor, occurring primarily in elderly light skinned individuals. Here, we report the occurrence of KA of the nose with an unusual morphology in a 12 year old boy with XP where, such an association of the disease in young age is exceedingly rare.