[Computed tomographic analysis of frontal recess region].

OBJECTIVE

The purpose of the study was to observe the CT imaging features of the frontal recess regional.

METHOD

Eighty-two patients were undergone spiral computed tomography (CT). Then multiplanar reconstruction images were made using standard triplanar reconstruction protocol on a computer workstation.

RESULT

The prevalence of agger nasi cell was 87.8% (144/164). One hundred and forty-five (89%, 145/164) uncinate processes had one superior attachment for each uncinate process. The others had two superior attachments for each uncinate process. The uncinate process' single superior attachment of into the surrounding structures was identified to have the following distribution: 90/164 (54.9%): to the lamina papyracea, 50/164 (30.5%) to the middle turbinate, and 5/164 (3.0%) to the skull base. Of all the frontal cells were identified in 144 (87.8%) sides of frontal recesses, the prevalence of type I II, type III IV, were 30.5% and 9.8% respectively.

CONCLUSION

T Agger nasi cell and uncinate process play an important role in endoscopic frontal sinus surgery.