Peritonsillar abscess, also known as quinsy, is a bacterial infection that causes pus to collect near the tonsils and the back of the throat. It usually starts with bacteria responsible for strep ...

Differential diagnoses of PTA include epiglottitis (inflammation of the epiglottis), infectious mononucleosis, lymphoma, peritonsillar cellulitis and retromolar or retropharyngeal abscess. 1 On ...