Frontal Sinusitis

**Definition:** Inflammation of the NASAL MUCOSA in the FRONTAL SINUS. In many cases, it is caused by an infection of the bacteria STREPTOCOCCUS PNEUMONIAE or HAEMOPHILUS INFLUENZAE.

**Tree numbers:** - C01.748.749.387 - C08.460.692.752.387 - C08.730.749.387 - C09.603.692.752.387

**Synonyms:** - Sinusitis, Frontal