Chronic invasive fungal sinusitis

Last revised by Myky Tran on 30 May 2023

Chronic invasive fungal sinusitis is a form of invasive fungal sinusitis

The condition has a more prolonged course than acute invasive fungal sinusitis, usually more than 12 weeks 5. Patients are usually immunocompetent or have a milder level of immunocompromise. There may be a history of chronic sinusitis.

CT usually shows homogeneous opacification of the affected sinus(es), iso- to hyperattenuating to muscle tissue.

Other suggestive features include:

  • relative lack of expansion of sinuses 2

  • mottled lucencies or irregular bone destruction may be seen

  • bone erosion localized to the area of extrasinus extension 2

  • extrasinus component of the disease more prominent than the intrasinus component 2

  • there may also be sclerotic changes in the bony walls of the affected sinuses representing chronic disease 3

Signal characteristics of affected region include:

  • T1: iso- or hypointense signal

  • T2: usually markedly hypointense signal

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Cases and figures

  • Case 1
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  • Case 2: cerebral invasion
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  • Case 3
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