nasopharyngeal branchial cyst and thornwaldt cyst in a patient with hearing loss after coronavirus infection

Introduction: the majority of nasopharyngeal cysts are asymptomatic and rare. nevertheless, these lesions are rarely discovered during regular endoscopies and imaging tests. an upper nasopharyngeal thornwaldt cyst is a benign, mucosal congenital cyst. even less frequently, they can cause unexplained sinonasal symptoms such as rhinorrhea, vision problems, and nasal blockage. case report: here, we report a case with new-onset hearing loss after the coronavirus infection, in which his imaging investigation showed a nasopharyngeal mass. conclusion: after covid-19 infection we should consider branchial cyst and thornwaldt cyst in a high-risk patients. on the other hand, the progressive hearing loss after covid-19 can occur due to activation of this kind of cysts.