Nasal endoscopy and paranasal sinus computerised tomography (CT) findings in an Irish cystic fibrosis adult patient group
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Cystic fibrosis (CF) is a common inherited disorder in Caucasians in Ireland having the highest reported incidence. CF has well-recognised clinical sequelae in several physiological systems. Its’ impact on the sinonasal system is less well established. We evaluated symptoms, endoscopic and computerised tomographic (CT) findings in an Irish adult CF group with the aim of characterising the relationship between these clinical features in an Irish CF group. Adult CF patients attending a specialist clinic underwent prospective evaluation of sinonasal symptoms using a specifically designed questionnaire. They subsequently underwent nasoendoscopy and CT scanning of their paranasal sinuses. Abnormalities identified were quantified using established radiological (Lund–Mackay) and endoscopic (Lund–Kennedy) scoring systems. The relationship between symptoms of chronic rhinosinusitis (CRS), endoscopic findings and CT abnormalities were then compared. Sixty-three CF patients (n = 63) were studied. 29 patients had a CT scan. Thirty-three CF patients (52 %) had no symptoms of CRS. Fifty CF patients (80 % of CF group) had evidence of CRS on nasoendoscopy including thirteen patients (20 %) with nasal polyposis. 98 % of patients scanned have positive findings on CT scan. There was no significant difference between symptomatic and asymptomatic CF groups with respect to their Lund–Kennedy endoscopic score or their Lund–Mackay CT score. 86 % demonstrated one or more hypoplastic sinus. There was no increased incidence of hypoplastic sinuses amongst Δf508 homozygotes than other mutation groups.
KeywordsCystic fibrosis Chronic rhinosinusitis Sinus hypoplasia CT sinuses Nasoendoscopy CF class mutation
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