Paranasal Sinus Inflammatory Disease: What is sinusitis – what are its causes and Treatment?
The paranasal sinuses are air cavities located inside the bones of the skull. A person has 4 pairs of sinuses: maxillary sinuses (located just behind the cheeks), frontal sinus, ethmoid sinuses, sphenoid sinus (the last two are located inside the skull, behind the nasal cavity). Each sinus connects to the nasal cavity so that the secretions…