Anatomical variability of the sphenoid and ethmoid sinuses according to the computed tomography

The peculiarities of the structure of the cells of the lattice labyrinth and the sphenoid sinus were determined. On the basis of the Merefa CRH of the Kharkiv region 400 male and female patients aged 20 to 60 years were examined, which were divided into three age groups. Patients in all groups underwent CT scans for reasons unrelated to upper respiratory tract disease (suspected stroke, which was not confirmed, etc.). On the basis of CT studies, the structure parameters of the lattice and sphenoid sinuses were calculated and it was established that they largely depend on sex. One of the calculated parameters was the minimum wall density of the lattice and sphenoid sinuses. In both cases, it was found that in women this parameter was lower than in men. It was also found that some variants of the structure can serve as a substrate for the narrowing of the natural anastomosis, the deterioration of sinus ventilation and the emergence of inflammatory processes in them. Thus, the presence of a Galer cell significantly reduces the size of the message between the nasal cavity and paranasal sinuses. Most often among all variants of pneumatization of cells of a lattice labyrinth the frontal cell was defined, the Onodi's cell was the rarest. The volume of the cells of the lattice sinus was smaller in women than in men.Keywords: CT, рaranasal sinuses, ethmoid sinus, sphenoid sinus.