Unspecified chronic sinusitis (3 contents)
Sinusitis, also known as sinusitis, is a common condition that can be caused by a viral, bacterial or fungal infection. The symptoms of sinusitis can be bothersome and affect daily functioning....
The paranasal sinuses perform very important functions in the body - from heating and cleansing the air passing through the nasal cavities to participating in the production of voice timbre or...