Suffering from a 7 week chronics sinusitis with ET dysfunction. Two rounds abx (aug and doxy) and two rounds po steroids w/o relief. CT scan shows "moderately large mucosal retention cyst within the left maxillary antrum." What does that mean?

Chronic sinusitis. can sometimes be difficult to treat, long courses of antibiotics, at least 4 weeks, if not 8 or 12, and some bugs develop resistance, so a good antibiotic might not work. A retention cyst in maxillary sinus is common, and have no consequences unless it is blocking sinus drainage.You want to see an allergist/Immunologist for evaluation, check 4 an allergist in your area, good luck.