The development of computed tomography (CT) technique results in the advance in visualization of the anatomic structures of the lateral nasal wall. It allows the anatomic variations of this region to be identified precisely, which is important in surgical treatment of chronic rhinosinusitis. The aim of this study was to determine the incidence of anatomic variations of the lateral nasal wall in a group of patients with chronic rhinosinusitis. The preoperative, frontal plane CT scans of the study group were evaluated using the method of the four-zone interpretation. The incidence of the anatomic variations of the lateral nasal wall was consistent with the results reported by other authors.
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