Intracranial plasmacytoma causing acute unilateral loss of vision

Sir, Some patients with multiple myeloma may present with neurologicalcomplaints,¹ but intracranial plasmacytomas are rare. We describea patient with a plasmacytoma compressing the optic nerve, causingunilateral loss of vision as the first presentation of multiplemyeloma. A previously healthy 62-year-old man consulted his ophthalmologistbecause of sudden