How has the diagnosis and treatment for allergic fungal sinusitis (AFS) evolved over time?

Updated: Mar 16, 2018
  • Author: John E McClay, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Answer

Several decades ago, fungal disease in the nose and paranasal sinuses represented an invasive deadly disease. Management consisted of extensive surgical debridement followed by therapy with systemic and topical antifungal agents. Early on, Aspergillus, a fungus known to cause invasive disease in the sinuses, was the only fungus recovered from the paranasal sinuses in patients with allergic fungal sinusitis (AFS) because of the limitation of culture techniques and the lack of knowledge that dematiaceous fungi caused disease in the paranasal sinuses. Therefore, the disease was treated aggressively.

In 1976, Safirstein noted that the combination of polyposis, crust formation, and sinus cultures yielding Aspergillus was similar to the constellation of findings observed in allergic bronchopulmonary aspergillosis (ABPA), a benign allergic process. [3] Safirstein's description was duplicated and expanded on by reports of allergic aspergillosis of the paranasal sinuses and allergic Aspergillus sinusitis. In the late 1980s, the disease was more widely accepted as a benign fungal process and often confused with a paranasal sinus tumor on imaging studies because allergic fungal sinusitis (AFS) creates expansion of affected sinus cavities.

In 1989, Robson et al introduced the term allergic fungal sinusitis following reports that this condition could be caused by a number of different fungi, not only Aspergillus. [4] Although the disease is becoming more recognized, confusion remains regarding diagnosis and treatment.


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