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Correspondence to Mandeep S. Ghuman, MBBS, MD, DM, Department of Radiology, St. Joseph's Healthcare Hamilton, 50 Chariton Avenue E, Hamiltom, ON L8N 4A6, Canada
Computed tomography revealed tram track–like calcifications within bilateral optic
nerve sheaths and large, amorphous calcific plaques on the sclera of a 91-year-old
man (Fig. 1). His past medical history was significant for calcium pyrophosphate dihydrate deposition
disease, chronic renal failure, and hypothyroidism. To the best of our knowledge,
there is only 1 reported case describing concomitant optic nerve sheath and sclerochoroidal
calcifications that were idiopathic.
The patient's known calcium pyrophosphate dihydrate deposition disease has possibly
contributed to the extensive and unusual distribution of orbital calcifications in
this case.
