Nasal and orbital recurrence of conjunctival melanoma 21 years after exenteration.

In our experience 5% of invasive malignant melanomas of the conjunctiva arising from areas of primary acquired melanosis with atypia spread to the ipsilateral nasal cavity and paranasal sinuses. Twenty one years after orbital exenteration for multicentric conjunctival melanoma an 82-year-old man was seen with an orbital recurrence, which had extended to the nasal cavity and paranasal sinuses through the nasolacrimal duct without invading the mucosa. This previously undescribed way of spread after the longest symptom-free interval following exenteration ever reported is illustrated.