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Optimum imaging for inverted papilloma.

L Savy1, G Lloyd, V J Lund

  • 1Institute of Laryngology and Otology, University College London, London, UK.

The Journal of Laryngology and Otology
|January 6, 2001
PubMed
Summary
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Inverted papilloma, a common benign nasal tumor, is best diagnosed with imaging. CT and MRI help identify its extent and differentiate it from other sinus conditions.

Area of Science:

  • Otolaryngology
  • Radiology
  • Pathology

Background:

  • Inverted papilloma is the most common benign tumor affecting the nose and paranasal sinuses.
  • It typically originates in the lateral nasal wall and middle meatus.

Purpose of the Study:

  • To describe the diagnostic features of inverted papilloma using imaging.
  • To outline the differential diagnosis for this condition.

Main Methods:

  • Computed Tomography (CT) imaging to identify masses continuous from the middle meatus to the maxillary antrum.
  • Magnetic Resonance Imaging (MRI) to define tumor extent and differentiate from inflammatory tissue.

Main Results:

  • CT findings suggestive of inverted papilloma include a mass in the middle meatus extending into the maxillary antrum, potential high-density areas or calcification, and sinus wall sclerosis.

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  • MRI is valuable for assessing tumor extent but lacks specific signal characteristics to distinguish inverted papilloma from malignancy.
  • Differential diagnoses include antro-choanal polyps, malignant sinus tumors, chronic rhinosinusitis, and fungal disease.

    • Conclusions:

    • A combination of bone deformity, sclerosis, and a characteristic antro-meatal mass on imaging suggests inverted papilloma.
    • Accurate diagnosis requires excluding other sinonasal pathologies.