Synonym: rhinosinusitis
The paranasal sinuses refer to the frontal, maxillary, sphenoidal and ethmoidal sinuses. These develop as diverticula from the nasal mucosa and are rudimentary or absent at birth, only expanding rapidly during the eruption of permanent teeth and again at puberty.
This is a companion discussion topic for the original article at https://patient.info/doctor/sinusitis-pro