Droopy eyelid due to IgG4-related dacryoadenitis

A 75-year-old man with well-controlled type 2 diabetes was referred to our department because of urinary obstruction. He developed retroperitoneal fibrosis 1 year prior to the referral and underwent a ureteral stent insertion at that time. Around the same period, double vision and eyelid ptosis of the right eye coincidentally appeared (figure 1A). We performed MRI of the orbit; it revealed bilateral lacrimal enlargement, especially at the right...