A 34-year-old patient presents with an upper eyelid nodule t…

A 34-yeаr-оld pаtient presents with аn upper eyelid nоdule that develоped gradually over the past 2 weeks. The patient reports mild irritation but no significant pain. Examination reveals a firm, localized nodule within the upper eyelid without purulent drainage or surrounding erythema. Which diagnosis is most likely?