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The author studied 40 sinuses using a newly designed antroscope, introduced into the sinuses through the bony wall of inferior meatus of the nose. In some cases, verious kinds of function tests were done and also pictures were taken. 1) The author classified the inflammatory changes of the sinus mucosa into following types, namely edematous, polypoid, and granulomatous type. The changes at the ostium and surroun-ding tissue were classified into normal, hyperplastic, obstructive, and covered type. 2) Pathological changes at the ostium appeared to have undesirable influence on the severity and chronicity of the sinus infection, inhibiting ciliary and evacuation function of mucosa. 3) There were close correlations between the pathological changes of the ostium and quantity of secretions, deviation of the septum, degree of obstruction in the middle meatus and haziness of anterior ethmoid cells on X-ray films. 4) The ostium showed an active dilation of the opening during the inspiratory movement. In the cases which did not show the dilation, fibrotic changes, especially perivascular fibrosis were prominent. 5) By photography, the author demonstrated u certain rule in evacuation of the secretion. At the ostium, there was an evidence that the contents of the sinus were sucked out to the nasal cavity proper. There was a constant route in evacuation of the secretion, and the rest of the mucosa were in the condition so called "schunutig off" 6) Antroscopic examination is an useful method to evaluate the condition of the ostium and also in the diagnosis of antral polyp.

ANTROSCOPIC STUDY OF PATHOLOGIC PHYSIOLOGY IN CHRONIC MAXILLARY SINUSITIS