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Am J Ophthalmol. 1985 Jul 15;100(1):100-13.

Unusual melanocytic nevi of the conjunctiva.


In one patient, an epithelioid cell nevus of the conjunctiva contained numerous large, unpigmented, mononucleated, binucleated, and multinucleated benign-appearing nevus cells with abundant cytoplasm and frequent intranuclear vacuoles. Despite their overall size, the cells manifested a low nuclear-cytoplasmic ratio. After a partial excision of the lesion, the remainder spontaneously regressed during a two-year period. Another patient's lesion was dominated by a proliferation of spindle nevus cells developing in a long-standing epibulbar nevus. The spindle cells were moderately pigmented, frequently located within walls of epithelial inclusion cysts, and had benign cytologic features. Finally, in a third patient with the cutaneous B-K mole syndrome, a dysplastic conjunctival nevus developed that featured intraepithelial, atypical melanocytic proliferation with superficial colonization of the substantia propria. This portion coexisted with a deeper, preexistent lesion in the substantia propria that was comprised of orderly nests of unpigmented cuboidal nevus cells surrounded by pigmented, spindle-shaped blue nevus cells--a so-called "mixed nevus."

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