I need to read slightly closer - 6 weeks out. Highly unlikely to be related to surgery. Either there is inflammation in the sinus cavity (foxtail/foreign body, allergy, etc....) or there is no clotting occuring. Most likely - inflammation.
I still recommend the humidifier. Good luck.
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Christopher A. Lee, DVM, MPH, Diplomate ACVPM
Preventive Medicine Specialist With a Focus on Immunology and Infectious Disease
myvetzone.com
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