Simultaneous squamous cell carcinoma and malignant melanoma of the conjunctiva in a teenager with xeroderma pigmentosum: Case report.

Xeroderma pigmentosum (XP) is an autosomal recessive disease with ophthalmic, dermatologic, and neurologic manifestations. Ophthalmological changes are described in up to 100% of XP patients. We report a young XP patient that presented with bilateral conjunctival masses. She was treated by surgical excision with supplemental cryotherapy. The histopathological analysis revealed squamous cell carcinoma with melanosis on right eye and conjunctival melanoma on the left eye. These patients need to be followed by dermatologists and ophthalmologists to identify malignant lesions as soon as possible and also to prevent unnecessary surgery that increases mutilation.