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Related Experiment Videos

Incidental asymptomatic orbital calcifications

J L Murray1, L A Hayman, R A Tang

  • 1Department of Ophthalmology, UTMB, Galveston, USA.

Journal of Neuro-Ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society
|December 1, 1995
PubMed
Summary
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Modern computed tomography (CT) scans reveal common asymptomatic orbital calcifications, including optic nerve head drusen and scleral plaques. This study aids clinicians in differentiating these incidental findings from pathological conditions.

Area of Science:

  • Ophthalmology
  • Radiology
  • Pathology

Background:

  • Incidental orbital calcifications are often discovered during neuroimaging.
  • Distinguishing these findings from pathological calcifications can be challenging for clinicians.

Purpose of the Study:

  • To quantify the incidence of asymptomatic incidental orbital calcifications using computed tomography (CT).
  • To describe the histological features of these calcifications.
  • To assist clinicians in identifying incidental orbital calcifications.

Main Methods:

  • Review of 100 orbital CT scans.
  • Examination of patients with incidental calcifications detected on brain CT scans by ophthalmology service.

Main Results:

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  • 2% of orbital CT scans showed bilateral optic nerve head drusen.
  • 3% demonstrated calcified scleral plaques.
  • 3% exhibited bilateral ossification of the trochlear apparatus.
  • Brain CT scans identified asymptomatic calcifications of the sclera and dura surrounding the optic nerves.

Conclusions:

  • Asymptomatic orbital calcifications are frequently observed on high-resolution CT images.
  • This imaging analysis helps differentiate incidental calcifications from foreign bodies or pathological processes.