 [ Symptoms ] i have a large hard knot beneath the skin of my left cheek approx 1 in from the corner of my lips i have gone to an np who diagnosed it as an abscess prescribed antibiotics are clindamycin & a substitute for bactrim swelling started april 6th the next day is when i visited the np the following day i went to an er due to more aggressive facial swelling the dr there gave me a cat scan & diagnosed the swelling as periorbital cellulitis due to dental decay at this point i had explained to the dr that none of my teeth were bothering me in any way  most of the swelling has come and gone but i still have the hard knot that remains what could be causing this knot will it go away what can i do notes from cat scans significant left periorbital & left facial soft tissue swelling & stranding of subcutaneous fat no discrete abscess is identified impression pansinusitis predominantly involving the right paranasal sinuses [ Disease ] if there is no walled off cavity or abscess formation then drainage or any surgical intervention would not be required antibiotics would be required for addressing the pansinusitis for 3 to 4 weeks a better alternative would be levofloxacin at a high dose 500 mg bd or moxifloxacin in consultation with an ent specialist wishing you best of health thanks