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Sinus
01
an air-filled cavity, especially within the bones of the skull
Exemple
He suffered from inflammation of the maxillary sinus.
02
a wide blood channel that lacks the lining of a typical blood vessel
Exemple
The surgeon carefully examined the venous sinus during the procedure.
03
an abnormal channel that drains a pus-filled cavity to the body surface
Exemple
The patient developed a sinus from a dental abscess.
