[PATHOMORPHOLOGICAL CHANGES UNDER LATENT MASTOIDITIS].

In our opinion it is caused by incomplete awareness of the distribution of pathological process and the character of morphological changes in the patients. In this regard, we studied structural changes in the soft and bone tissue taken from various cavities of the middle ear system. Operating material was formed in paraffin after the fixation and proper processing. We proceed with decalcification of bone tissues in 15-20% nitric acid. We painted 5-6 mm thick peels prepared on the rotating microtome with hematoxylin and eosin. The microscopic examination revealed inflammatory-destructive changes in the mucous membrane as well as in the bone tissues, also serous inflammation-fibrin inflammation, and well-expressed edema. The inflammatory infiltration demonstrated the presence of lymphocytes, macrophages, plasmocytes and also predominantly dislocated leukocytes. There were also revealed various amount of glandular structures. The bone tissues - along with the inflammatory infiltration - revealed destructive cells, which contained osteoclast, epithelial cells and fibroblasts. The mentioned structural changes should be assessed as demonstration of an osteitis and osteomyelitis. Based on the above mentioned, we believe that treatment of latent mastoiditis requires surgical method and it is necessary the complete sanitization of not only the granulating tissue but the damaged bone masses. Otherwise, the remaining inflammatory nidus may cause a relapse. The correct treatment of latent mastoiditis in turn will reduce the mortality rate and the percentage of disability.