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The article in this issue by Dr. Philip on the use of "The X-ray in Determining the Limits of the Frontal Sinus" is a contribution to a subject that apparently needs more elucidation. The possibility of there being no frontal sinus at all in the adult seems not to have been always duly emphasized, as witness two recent articles in a leading medical journal that discuss operations in this region. In one of the two its occasional absence on one side is merely mentioned, in the other this possibility seems to have been entirely neglected. In 240 European crania Logan Turner1 found one or both sinuses absent in 41, or 17 per cent., and both were absent in 18 of these, or 7.5 per cent., of the whole number. The great majority of these instances were in British skulls, but a still larger proportion of these anomalies is indicated
THE ABSENCE OF THE FRONTAL SINUS.. JAMA. 1902;XXXVIII(12):769. doi:10.1001/jama.1902.02480120027009
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