PubMed · 5390486
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K Kubota. 1969. [Ethmoid sinuses].. https://pubmed.ncbi.nlm.nih.gov/5390486/
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A mucocele is an epithelial lined mucus-containing sac completely filling a paranasal sinus and capable of expansion. They are relatively unusual, occurring most frequently in the fronto-ethmoidal region. The imaging features on plain X-ray, computerized tomography and magnetic resonance imaging are relatively characteristic allowing distinction of the lesion from other pathologies in this area although the mucoceles may occur in association with other pathologies such as nasal polyposis and neoplasia.
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PURPOSE: Compare dose distributions of traditional versus conformal beam orientations in paranasal sinus malignancies. MATERIALS AND METHODS: Maximum normal tissue doses, dose volume histograms (DVH), normal tissue complication probabilities (NTCP), and the percentage of each normal tissue receiving >80% of the average target dose (V80) were calculated. RESULTS/CONCLUSIONS: Conformal planning reduced the V80 to the optic nerves and chiasm as well as the normal tissue maximum doses to the ipsilateral and contralateral optic nerves and chiasm, and mean NTCPs.