Frontal Sinus - ț̢
One of the paired, but seldom symmetrical, air spaces located between the inner and outer compact layers of the frontal bone.
Synonyms : Sinus, Frontal
Frontal Sinusitis - ț̢
Inflammation of the frontal sinus; in most cases the infection is caused by the bacteria STREPTOCOCCUS PNEUMONIAE and HAEMOPHILUS INFLUENZAE. This condition may be acute or chronic.