frontal sinuses


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to frontal sinuses: ethmoid sinusitis

frontal sinuses

Two hollow spaces in the frontal bone lying above the orbits. They are lined with mucous membrane, contain air, and communicate with the middle nasal meatus via the nasofrontal duct.
References in periodicals archive ?
The maxillary and palatine sinus anatomies are more regular than the frontal sinuses, which facilitates sinuscopic inspection of the first ones.
Several studies have suggested that the frontal sinuses are slightly bigger in males than in females, and the presence of a metopic suture is associated with the absence of the frontal sinuses (BROWN et al.
8,9) There are case reports of extremely rare primary sinonasal ameloblastomas but no previous reports were found of extension of a benign maxillary ameloblastoma into the frontal sinuses, as in this case.
The spread of the infection from the frontal sinuses intracranially usually occurs by progressive thrombophlebitis through valveless diploic veins.
Because the frontal sinuses are midline structures with a much more prominent structure (the nose) nearby, they rarely are fractured.
The new product gives surgeons flexibility in the treatment of patients with chronic sinusitis by providing access to direct powered irrigation of the frontal sinuses.
In all our patients, frontal sinuses on either sides were always asymmetrical with right being large in 47.
3) Since women have smaller frontal sinuses than do men, women represent the majority of these patients.
The frontal sinuses are two, situated in the posterior part of the supercilliary arcs, between the external and internal faces of the frontal bone.
Contiguous noncontrast coronal 2-mm slices were obtained extending from the anterior frontal sinuses to 2 cm posterior to the posterior wall of the frontal sinuses; in addition, contiguous 5-mm slices to the posterior wall of the sphenoid sinus were performed.
Older kids may have severe headaches, particularly if their frontal sinuses are involved.