American Journal of Neuroradiology, Vol 13, Issue 3 903-912, Copyright © 1992 by American Society of Neuroradiology
ARTICLES |
Recurring patterns of inflammatory sinonasal disease demonstrated on screening sinus CT
RW Babbel, HR Harnsberger, J Sonkens and S Hunt
Department of Radiology, University of Utah College of Medicine, Salt Lake City.
PURPOSE: In order to define specific features on screening sinus CT (SSCT) that will aid the endoscopic surgeon in his approach to patients with inflammatory sinonasal disease, we sought to answer four questions: 1) what recurring patterns of inflammatory sinonasal disease are evident on SSCT; 2) what is the relative frequency of these recurring patterns; 3) how do these CT patterns correlate with the known sinus mucociliary drainage routes; and 4) what are the characteristic radiologic features of each pattern? METHODS: We reviewed the clinical and radiologic records of 500 consecutive patients who underwent SSCT as a prelude to possible functional endoscopic sinus surgery. RESULTS: Five recurring radiologic patterns of sinonasal inflammatory disease were identified: 1) infundibular (129/500 or 26%), 2) ostiomeatal unit (126/500 or 25%) 3) sphenoethmoidal recess (32/500 or 6%), 4) sinonasal polyposis (49/500 or 10%), and 5) sporadic (unclassifiable) (121/500 or 24%) patterns. Normal SSCT was seen in 133/500 patients (27%). CONCLUSION: Identification of specific patterns of sinonasal disease permits grouping of patients into nonsurgical (normal CT), routine (infundibular, ostiomeatal unit, and most sporadic patterns) and complex (sinonasal polyposis and sphenoethmoidal recess patterns) surgical groups. Assignment of patients to radiologic patterns allows a tailored surgical approach.
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