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  • Title: [Influence of anatomic variations of the structures of the middle nasal meatus on sinonasal diseases].
    Author: Buljcik-Cupić MM, Savović SN, Jovićević JS.
    Journal: Med Pregl; 2008; 61(3-4):135-41. PubMed ID: 18773688.
    Abstract:
    INTRODUCTION: The most common anatomic variations of the structures of the middle nasal meatus are variations of agger nasi cells, variations of the middle turbinate, variations of uncinate process, variations of the ethmoidal bulla, deviations and deformations of nasal septum in the region of the middle nasal meatus, Haller's cell (orbitoethmoidal) and Onodi's cell (sphenoethmoidal cell). In 1997, the Otorhinolaryngology-Head Neck Surgery, Task Force on Chronic Rhinosinusitis defined chronic sinusitis and nasal disease initially by including sinusitis and rhinitis with one term-chronic rhinosinusitis. This was done because it was apparent to many that nasal disoders often affected the sinuses, and vice versa. Also they established baseline parameters, major and minor signs and symptoms, for definition of rhinosinusitis. Two major factors or one major factor and two minor factors constitute a strong history for rhinosinusitis. MATERIAL AND METHODS: The following methods were used in the study: 1. Anamnestic data processing about: disease symptoms that were recognized by American Academy for ENT as major and minor criteria in diagnosing nosinusitis; the duration of symptoms; the kind of sinonasal disorder and the secondary disorders. 2. Data processing obtained by anterior/posterior rhinoscopy. 3. Data processing obtained by endoscopic examination. 4. Data processing obtained by CT of paranasal cavities and the nose. The data about anatomic variations were statistically processed by Eives's correlation coefficient that indicates the degree of correlation between sinonasal disorders and anatomic variation. RESULTS: By analyzing the obtained data in the examined patients with sinonasal disorders, anatomic variations were present in over 50% of the patients and are defined by percentage. 1. The deviation of nasal septum in 83.33% patients. 2. The variations of the form of the middle nasal chonha in 58.92% patients. 3. The presence of agger nasi cells in 50% patients. 4. Variations of the form of ethomoidal bulla in 50% patients. Eives's correlation coefficient i.e. the degree of correlation between sinonasal disorders and the presence of anatomic variation statistically significantly correlate at r > or = 0.05 of anatomic variation of the middle nasal chonha (r = 0.23) and the presence of deviation/deformation of nasal septum (r = 0.6) with sinonasal disorders. DISCUSSION AND CONCLUSION: Anatomic variations of the structures of the middle nasal meatus can additionally complicate the anatomy of the lateral nasal wall and the conditions of the ostiomeatal unit. Therefore we must view these variations as factors predisposing to more rapid and frequent appearance and persistence of chronic inflammations. Also, familiary with the variations in sinonasal anatomy is a prerequisite to safe and effective surgical treatment of sinonasal disease. Recognition of this anatomic variation should minimize catastrophic violation of vital structures such as orbit or skull base.
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