Predicting the site of attachment of sinonasal XXXX .

@entity1 @entity2785 @entity5 @entity1179 @entity4421
STATEMENT OF PROBLEM: Sinonasal @entity1179 is a benign, @entity2785 , which has a propensity for malignant transformation and recurrence. The evolution of endoscopic trans-nasal surgery has facilitated less destructive and, more functionally and cosmetically acceptable approaches to this @entity5 . Recurrence rates have been shown to be more favourable than after traditional external approaches. Precise surgery is enhanced by pre-operative localisation of the site of @entity5 attachment. The aim of this study was to examine, in a prospective fashion, the predictive value of @entity4421 on the pre-operative CT scan of the paranasal sinuses at correctly identifying the site of attachment of sinonasal @entity1179 . METHOD OF STUDY: Pre-operative CT scans of the paranasal sinuses in 24 @entity1 with histology-proven sinonasal @entity1179 were examined for @entity4421 , allowing a prediction of the site of attachment. Coronal reformats of thin-cut (1mm) axial CT scans were evaluated. Intra-operatively, the actual site of @entity5 attachment was established. A correlation between the predicted and actual site of @entity5 attachment was calculated. MAIN RESULT: The predictive value of the @entity4421 sign was 95%. PRINCIPAL CONCLUSION: Pre-operative identification of @entity4421 can be used in 95% of cases to accurately predict the intra-operative site of attachment of sinonasal @entity1179 .
