The Prevalence of Frontal Cells and Their Relation to Frontal Sinusitis: A Radiological Study of the Frontal Recess Area

Figure 5

Small type III frontal cell (original figure). A coronal CT scan showing a small right-sided type III frontal cell (arrow) pneumatizing from the frontal recess into the frontal sinus. This cell, although too small to cause frontal sinus obstruction, is still included as a type III frontal cell.