Revista de otorrinolaringología y cirugía de cabeza y cuello
On-line version ISSN 0718-4816
CABEZON A, Rodrigo et al. Remarkable anatomic variations on paranasal CT scans. Rev. Otorrinolaringol. Cir. Cabeza Cuello [online]. 2010, vol.70, n.3, pp. 223-230. ISSN 0718-4816. doi: 10.4067/S0718-48162010000300005.
Introduction: Paranasal sinus anatomy is quite variable. Some variations are involved in rinosinusal pathology, others are landmarks ofFESS (functional endoscopic sinus surgery). Aim: To determine the frecuency of paranasal anatomic variations in our consulting population. Material and method: Retrospective revision of all paranasal CT scans achieved in our Radiology Service during a two month period during 2009. Results: We found most of ethmoid anatomic variations, with similar frecuencies as described in literature. We also studied anterior ethmoidal artery anatomy, and ethmoid roof configuration, using Keros classification Conclusions: We found, in general, similar frecuencies as described in foreign series. More than half of our patients had Keros I ethmoid roof configuration type, a differing result from most of other series. Every ENT surgeon should be trained in routine search of these variations, helping to avoid possible surgical complications.
Keywords : Ethmoid variations; paranasal CTscans; sinus endoscopic surgery; Keros.