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KMID : 0369319940140020196
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Allergy
1994 Volume.14 No. 2 p.196 ~ p.203
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Comparison of Sinus X-ray and Limited Slice CT Scan in children with Chronic Sinusitis
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김현미
홍수종/김영휘/문형남/홍창의/정경일/최혜영/유시준
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Abstract
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Assessment of the status of the paranasal sinuses in important in management of childhood sinusitis. Conventional radiography such a plain PNS view is generally less reliable in accurately evaluating the paranasal sinuses in children. Although
slice CT
provides superior definition of both intrasinus disease and sinus bony margins, a complete CT examination has the disadvantages of higher cost and radiation dose compared with conventional radiography.
We performed a prospective study of 19 children with a clinical history of chronic sinusitis, and compared conventional radiographs with limited CT scans of the paranasal sinuses to determine if plain radiographs can be used to accurately
diagnose
sinus
disease. Sixteen cases were diagnosed as sinusitis involved with more than one sinus, but three cases were normal by CT scans of the sinuses. Out of sixteen cases, maxillary sinus were involved in 14 cases(87.5%), ethmoid sinus 14 cases (87.5%),
sphenoid sinus 9 cases(56.3%). Compared with CT scan of paranasal sinuses, the false positive and false negative ratio of plain X-ray films were as followed: 35.7%(5/14 sinuses) and 9.5%(2/21 sinuses) in maxillary sinuses, 11.1%(1/9 sinuses) and
9.5%(2/21 sinuses) in ethmoidal sinuses, 4.5%(1/22 sinuses) and 58.3%(7/12 sinuses) in sphenoid sinuses. So the false positive ratio was high in maxillary sinuses, and the false negative ratio was high in sphenoidal sinuses.
Sinusitis in children is often overdiagnosed in the maxillary sinuses and underdiagnosed in the spenoid sinuses on the basis of findings on plain radiographs of the sinuses. Limited slice CT scans of the paranasal sinuses can be used to evaluate
the
paranasal sinuses in children with recurrent chronic sinusitis.
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