Roentgenologic and Pathologic Examination of the Osseous Auditory Tube in Chronic Suppurative Otitis Media
1977 Volume 29 Issue 2 Pages 159-192
Details
1977 Volume 29 Issue 2 Pages 159-192
The method of radiography of the osseous auditory tube with or without contrast medium and its validity in diagnosis of chronic supprative otitis media was examined.
1. The best roentgenogram of the osseous tube was found to be obtained by projection of X-ray in the vertical plane with 5 degrees of lateral deviation. In contrast radiography of the tube, radio-opaque (40 per cent moljodol) was injected into the tube using Atom LG-2 Lymphography from the pharyngeal orifice with pressure of 3 kg/cm2.
2. In simple osseous-tubo-radiography, linear shadows of the anterior and posterior wall of the tube and that of the surrounding tissues were found to demonstrate pathological changes in the osseous auditory tube.
3. In chronic suppurative otitis media, the shadow of“semicanalis musculi tensoris tympani”showed marked irregularity.
4. By combination of three tests, that is-simple osseous-tubo-radiography, contrast osseous-tubo-radiography and chloromycetin test, pathological changes of the osseous auditory tube in chronic otitis media can be evaluated more accurately. About 81% of cases with chronic supprative otitis media were found to have abnormal findings in these three tests.
5. Validity of tests above-mentioned was confirmed through both macroscopic findings of the tympanic orifice of the tube during ear surgery and histological findings of the tissue around the osseous tube.
