Distinguishing rhinitis and nasal neoplasia by radiography

Citation
M. Russo et al., Distinguishing rhinitis and nasal neoplasia by radiography, VET RAD ULT, 41(2), 2000, pp. 118-124
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Veterinary Medicine/Animal Health
Journal title
VETERINARY RADIOLOGY & ULTRASOUND
ISSN journal
1058-8183 → ACNP
Volume
41
Issue
2
Year of publication
2000
Pages
118 - 124
Database
ISI
SICI code
1058-8183(200003/04)41:2<118:DRANNB>2.0.ZU;2-X
Abstract
To compare the incidence of radiographic signs in dogs with rhinitis and pr imary nasal neoplasia and to assess the performance of observers for distin guishing these conditions, the nasal radiographs of 72 dogs with either rhi nitis (n = 42) or primary nasal neoplasia (n = 30) were examined by two ind ependent observers using custom-designed forms to record their interpretati ons. Rhinitis was associated with a higher incidence of focal or multifocal lesions, localised soft tissue opacities, lucent foci, and a lack of front al sinus involvement. Neoplasia was associated with soft tissue opacities a nd loss of turbinate detail that affected the entire ipsilateral nasal cavi ty, signs of invasion of the bones surrounding the nasal cavity, and soft t issue/fluid opacities within the ipsilateral frontal sinus. The signs with the highest positive predictive value (PPV) for rhinitis were absence of fr ontal sinus lesions and lucent foci in nasal cavity (PPV of each 82%), and invasion of surrounding bones for neoplasia (PPV 88%). There were no signif icant differences in the position of the lesion within the nasal cavity, in cidence of unilateral versus bilateral lesions, calcified lesions, or absen ce of teeth. There was moderate agreement between observers about the diagn osis (kappa 0.59). Areas (SE) under ROC curves were 0.94 (0.03) and 0.96 (0 .03) for observers A and B, respectively (not significantly different; P = 0.68). These results indicate a high accuracy for radiologists examining do gs with nasal diseases. Differentiation of rhinitis and nasal neoplasia sho uld be based on finding combinations of radiologic signs that together have a high PPV. Differences in interpretation between experienced observers in this study suggest that certain signs are potential sources of error.