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Author (up) Hansen, A.G.; Helvik, A.-S.; Nordgard, S.; Bugten, V.; Stovner, L.J.; Haberg, A.K.; Garseth, M.; Eggesbo, H.B. url  doi
  Title Incidental findings in MRI of the paranasal sinuses in adults: a population-based study (HUNT MRI) Type Journal Article
  Year 2014 Publication BMC ear, Nose, and Throat Disorders Abbreviated Journal BMC Ear Nose Throat Disord  
  Volume 14 Issue 1 Pages 13  
  Keywords HUNT3; Fluid; Incidental findings; MRI; Mucosal thickening; Opacification; Paranasal sinuses; Polyps; Population-based study; Retention cysts  
  Abstract BACKGROUND: Diagnostic imaging of the head is used with increasing frequency, and often includes the paranasal sinuses, where incidental opacifications are found. To determine the clinical relevance of such findings can be challenging, and for the patient such incidental findings can give rise to concern if they are over-reported. Studies of incidental findings in the paranasal sinuses have been conducted mostly in patients referred for diagnostic imaging, hence the prevalence in the general population is not known. The purpose of this study was to determine the prevalence and size of incidental opacification in the paranasal sinuses in a non-selected adult population using magnetic resonance imaging (MRI) without medical indication, and to relate the results to sex and season. METHODS: Randomly and independent of medical history, 982 participants (518 women) with a mean age of 58.5 years (range, 50-66) underwent MRI of the head as part of a large public health survey in Norway. The MRIs included 3D T1 weighted volume data and 2D axial T2 weighted image (WI). Opacifications, indicating mucosal thickenings, polyps, retention cysts, or fluid, were recorded if measuring more than 1 mm. RESULTS: Opacifications were found in 66% of the participants. Mucosal thickenings were found in 49%, commonly in the maxillary sinuses (29%) where 25% had opacifications that were less than 4 mm in size. Other opacifications occurred in the anterior ethmoid (23%), posterior ethmoid (21%), frontal sinus (9%), and sphenoid (8%). Polyps and retention cysts were also found mainly in the maxillary sinuses in 32%. Fluid was observed in 6% of the MRIs. Mucosal thickening was observed more frequently in men than in women (P <0.05). No seasonal variation was found. CONCLUSIONS: In this large non-selected sample, incidental opacification in the paranasal sinuses was seen in two out of three participants, and mucosal thickening was seen in one out of two. Fluid was rare. Knowledge of incidental opacification is important because it can affect clinical practice.  
  Address Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1472-6815 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:25674037 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 1671  
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Author (up) Hansen, A.G.; Helvik, A.S.; Thorstensen, W.M.; Nordgard, S.; Langhammer, A.; Bugten, V.; Stovner, L.J.; Eggesbo, H.B. url  doi
  Title Paranasal sinus opacification at MRI in lower airway disease (the HUNT study-MRI) Type Journal Article
  Year 2016 Publication Eur Arch Otorhinolaryngol Abbreviated Journal European archives of oto-rhino-laryngology  
  Volume 273 Issue 7 Pages 1761-1768  
  Keywords HUNT2; HUNT3  
  Abstract The study builds on the concept of united airways, which describes the link between the upper and lower airways. Explorations of this concept have mainly related to asthma and less to chronic obstructive pulmonary disease (COPD). The aim of this study was to investigate paranasal sinus opacification at magnetic resonance imaging (MRI) in COPD, self-reported asthma and respiratory symptoms. In this cross-sectional study, 880 randomly selected participants in the Nord-Trondelag health survey (HUNT) (mean age 57.7 years, range 50-66 years, 463 women) were investigated using MRI of the paranasal sinuses. Participants were allocated to four mutually exclusive groups: (1) COPD (n = 20), (2) asthma (n = 89), (3) respiratory symptoms (n = 199), and (4) reference group (n = 572). Paranasal sinus opacifications were categorised as mucosal thickening, polyps and retention cysts, and fluid. In each participant, measurements >/=1 mm from all sinuses were summed to give a total for each category of opacities. The sums for these three categories were further added together, and referred to as the total sum. Using the 75th percentile cut-off values, the likelihood of having paranasal sinus opacifications was more than six times higher in participants with COPD and twice as high in participants with asthma than among the reference group. Respiratory symptoms were only associated with mucosal thickening. The present study shows that paranasal sinus opacification is associated not only with asthma, but also with COPD and respiratory symptoms. This is in accordance with the united airways hypothesis, and should be kept in mind when handling patients with these conditions.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Department of Ear, Nose and Throat, Head and Neck Surgery, St. Olavs Hospital, Norwegian University Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Hansen, Aleksander GrandeHelvik, Anne-SofieThorstensen, Wenche MoeNordgard, StaleLanghammer, ArnulfBugten, VegardStovner, Lars JacobEggesbo, Heidi BeateengGermanyEUFOS2015/10/27 06:00Eur Arch Otorhinolaryngol. 2016 Jul;273(7):1761-8. doi: 10.1007/s00405-015-3790-7. Epub 2015 Oct 26. Approved no  
  Call Number HUNT @ maria.stuifbergen @ Hansen2016 Serial 1746  
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Author (up) Hansen, A.G.; Stovner, L.J.; Hagen, K.; Helvik, A.-S.; Thorstensen, W.M.; Nordgard, S.; Bugten, V.; Eggesbo, H.B. url  doi
  Title Paranasal sinus opacification in headache sufferers: A population-based imaging study (the HUNT study-MRI) Type Journal Article
  Year 2017 Publication Cephalalgia : an International Journal of Headache Abbreviated Journal Cephalalgia  
  Volume 37 Issue 6 Pages 509-516  
  Keywords Paranasal sinuses; headache; magnetic resonance imaging; migraine; opacification; sinus headache; tension headache  
  Abstract Background The association between headache and paranasal sinus disease is still unclear. Because of symptom overlap, the two conditions are not easily studied on the basis of symptoms alone. The aim of the present study was to investigate whether paranasal sinus opacification on magnetic resonance imaging (MRI) was associated with migraine, tension-type headache (TTH) or unclassified headache. Methods This was a cross-sectional study of 844 randomly selected participants (442 women, age range 50-65 years, mean age 57.7 years). Based on 14 headache questions, participants were allocated to four mutually exclusive groups: migraine, TTH, unclassified headache or headache free. On MRI, opacifications as mucosal thickening, polyps/retention cysts and fluid in the five paired sinuses were measured and recorded if >/=1 mm. For each participant, opacification thickness was summed for each sinus and, in addition, a total sum of all sinuses was calculated. Opacification in each sinus was compared between headache-free participants and the headache groups using non-parametric tests, and the total sum was compared by logistical regression. Results No significant association was found between paranasal sinus opacification and headache in general, nor when headache was differentiated into migraine, TTH and unclassified headache. This was also true in separate analyses of mucosal thickening and fluid and of opacification from each paranasal sinus. Conclusion Migraine, TTH and unclassified headache were found not to be associated with an increased degree of paranasal sinus opacification at MRI.  
  Address 5 Department of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0333-1024 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:27215544 Approved no  
  Call Number HUNT @ maria.stuifbergen @ Serial 1921  
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