Retrospective Study on the Prevalence of Haller Cells Using Cone Beam Computed Tomography.

Background And Objective: The paranasal sinuses are cavities filled with air located within specific bones, namely the frontal, ethmoidal, maxillary, and sphenoidal sinuses. The ethmoidal sinus is composed of three groups: anterior, middle, and posterior, which are found on both sides. Haller cells (HC), also known as infraorbital ethmoid cells, are projections of the anterior ethmoid sinus that extend into the floor of the orbit and the upper part of the maxillary sinus.

An uncommon case of fibrolipoma.

Lipoma is a common benign soft-tissue neoplasm derived from mature adipose tissue neoplasm, but its presence in the oral and pharyngeal region is relatively uncommon. Oral lipoma was first described by Roux in 1848 as "yellow epulis." It has an incidence rate of about 1%-4% of all benign oral lesions, with a prevalence rate of about 0.