Abstract
Objective: To use modern computed tomography (CT) imaging to quantify the incidence of asymptomatic incidental orbital calcifications and describe their histological features. Materials and Methods: One hundred orbital CT scans were reviewed. In addition, patients who had orbital calcification(s) detected on a brain CT scan were examined by the ophthalmology service. Results: Of the orbital CT scans, 2% had bilateral drusen of the optic nerve head, 3% had calcified scleral plaques anterior to the medial or lateral rectus muscles, and 3% had bilateral ossification of the trochlear apparatus. Routine brain CT scans detected asymptomatic calcifications of the sclera and dura surrounding the proximal optic nerves. Conclusion: Incidental asymptomatic orbital calcifications are commonly encountered on modern high- resolution CT images of the brain and orbit. This article should help the clinician to confidently distinguish these densities from foreign bodies or pathological calcifications.
Original language | English (US) |
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Pages (from-to) | 203-208 |
Number of pages | 6 |
Journal | Journal of Neuro-Ophthalmology |
Volume | 15 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1995 |
Keywords
- Calcification
- Computed tomography
- Drusen
- Dura mater
- Dura ossification
- Medial/lateral rectus muscle
- Orbit
- Trochlear apparatus
ASJC Scopus subject areas
- Clinical Neurology
- Ophthalmology