[CT diagnosis of polypous rhinosinusitis].

Patients with diseases of the nasal cavity and paranasal sinuses (PNS) were examined with computed tomography (CT) with subsequent estimation of the area of the ethmoid bone sinuses (EBS) using Contour program. CT detected the following changes: total area of EBS in polypous rhinosinusitis (PRS) was 12-26 cm2 versus 42-51 cm2 in healthy subjects. In ostiomeatal complex pathology total cell area was 30-41 cm2 while area of at least one EBS group was subnormal and corresponded to sinus area in PRS. Conduction of PNS CT with subsequent calculation of EBS area detects patients with defective structure of the ostiomeatal complex predisposed to development of PRS and allows early surgical correction of anomalous group of EBS.