[Tympanosclerosis of the tympanic membrane].

The structure of the tympanosclerotic plaques of the tympanic membrane was examined by using the scanning electron microscope. Studies were carried out on specimens of the tympanosclerotic plaques obtained during surgery in 15 patients for chronic middle ear inflammation. It was found that tympanosclerotic plaques contained fibrous fibers of different densities, distribution and calcification, and without cellular elements. The authors recognized two types of plaques, with moderate and severe degree of calcifications. The results showed that the role of a degenerative process was dominant in the pathogenesis of tympanosclerosis.