<prompt> Pharyngeal bursa is a site of origin for:CraniopharyngiomaChordomaThornwaldts cystRathkes cyst  <response>: Infection of pharyngeal bursa gives rise to Thomwaldts cyst which causes postnasal discharge, halitosis and occipital headache.Chordoma arises from remnants of notochord. Craniopharyngioma arises from Rathkes pouch. Rathkes cyst also arises from Rathkes pouch and can get infected, which may extend superiorly into the cranium and gives symptoms of galactorrhoea, visual loss and hypopituitarism. 