口蓋裂症例における乳突蜂巣発育の経時的変化

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  • Chronological changes in the mastoid cell in a case with cleft palate

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Cleft palate is frequently associated with intractable otitis media with effusion. We investigated chronological changes in the mastoid cell in 108 cleft palate patients (216 ears) during preoperative examinations at Showa University Hospital. Twenty-five patients (50 ears) without cleft palate were also reviewed. We obtained Schi ller's view of x-rays in these patients serially at the ages of 1, 3, and 5 years. After these films were scanned into the computer, the area of each mastoid cell was measured using image analysis software, then the findings were analyzed. The mastoid cell area in the cleft palate patients without otitis media was significantly smaller than that in the cases without cleft palate at each of the ages examined. Although growth of the mastoid cell area with age was found in a cleft palate patient with otitis media, no significant growth of the mastoid cells occurred after insertion of a ventilation tube.

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