Sinonasal polyposis

Sinonasal polyposis refers to the presence of multiple benign polyps in the nasal cavity and paranasal sinuses. It causes a particular pattern of chronic sinusitis.

Clinical symptoms may include 3

  • progressive nasal stuffiness
  • rhinorrhoea
  • facial pain
  • headache
  • anosmia
  • extensive mucosal polyps occupying and obliterating the nasal cavity and the paranasal sinuses
    • usually, they are hypodense, but may be hyperdense due increased protein content or fungal infection
  • associated local benign bone remodelling or erosion (as opposed to a mucocoele where the entire sinus is expanded 6)
    • enlargement of infundibula
    • attenuation of the ethmoid sinus walls and nasal septum
    • occasionally sparing of the inferior nasal meatus
    • truncation of middle turbinate 4
  • opacified ethmoid sinuses with convex lateral walls and air-fluid levels
  • a concurrent fungal sinus infection may be present


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Article information

rID: 31864
System: Head & Neck
Synonyms or Alternate Spellings:

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Cases and figures

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    Sinonasal polypos...
    Case 1
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    Case 2: with secondary fungal infection
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    Case 3
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    Case 4
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    Case 5
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