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  • Title: Patency of the nasofrontal duct during frontal sinusitis.
    Author: Andréasson L, Elner A, Ivarsson A, Jannert M.
    Journal: Rhinology; 1983 Jun; 21(2):143-7. PubMed ID: 6612179.
    Abstract:
    In a series of frontal sinuses trephined due to frontal sinusitis the airway resistance of the nasofrontal duct was tested during the healing period as well as in a long-term follow-up study up to one year. The nasofrontal duct was more resistant to passage for air than for saline during the healing period. A high incidence of recurrences was found in cases with high airway resistance of the duct, a prolonged primary healing period and when major nasal pathology was found.
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