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A 51-year-old woman presented with a 3-week history of a unilateral, right-sided painless swollen upper lid and non-tender preauricular lymphadenopathy (fig 1A). Parinaud oculoglandular syndrome (POS) was diagnosed. Three weeks before, she was treated for a root infection of a tooth in her right upper jaw. She was slightly febrile and was put on Amoxicillin for the last 8 days, but without any improvement of symptoms. The past medical history was remarkable for a history of rheumatoid polyarthritis that was treated with methotrexate (MTX).
Visual acuity was …