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Nasolacrimal duct opacity on CT

W K Loftus1, J Kew, C Metreweli

  • 1Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.

The British Journal of Radiology
|July 1, 1996
PubMed
Summary

Nasolacrimal duct opacity is common in healthy individuals, not linked to sinus inflammation. This retrospective study of 100 CT scans reveals no correlation between duct opacity patterns and inflammatory sinus disease.

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Area of Science:

  • Otorhinolaryngology
  • Ophthalmology
  • Radiology

Background:

  • Inflammatory sinus disease can affect adjacent structures.
  • The nasolacrimal duct's relationship with sinus pathology requires clarification.

Purpose of the Study:

  • To investigate the prevalence of nasolacrimal duct opacity on coronal sinus CT scans.
  • To determine any correlation between nasolacrimal duct opacity patterns and inflammatory sinus disease.

Main Methods:

  • Retrospective analysis of 100 coronal sinus computed tomography (CT) scans.
  • Evaluation of nasolacrimal duct opacity.
  • Correlation analysis with diagnosed inflammatory sinus disease.

Main Results:

  • Nasolacrimal duct opacity was observed in the majority of individuals.

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  • No statistically significant relationship was found between the pattern of nasolacrimal duct opacity and the presence of inflammatory sinus disease.

    • Conclusions:

    • Nasolacrimal duct opacity is a frequent finding in asymptomatic individuals.
    • Findings suggest that routine observation of nasolacrimal duct opacity on sinus CT scans does not indicate underlying sinus inflammation.