Occasionally in the course of acute and chronic suppurations of the middle ear sequestrums develop as a result of necrosis of the osseous labyrinth. This complication may appear in the course of scarlet fever, cholesteatoma, tuberculosis, diabetes, syphilis and other types of granuloma and in the case of injury to the osseous labyrinth during surgical procedures on the ear. We believe, too, that petrositis is occasionally complicated by necrosis and sequestration of the bony labyrinth. The disease occurs most often in children, but it may appear at any age. The extent may vary from slight circumscribed caries to involvement of the entire temporal bone, and even of the surrounding occipital, zygomatic and parietal bones.
Pain occurs frequently, and it is usually severe. It may be due to inflammation of the adjacent periosteum or meninges or to retention of the products of suppuration and frequently disappears only on removal of
PROCTOR B, LINDSAY JR, GONNE WS. SEQUESTRATION OF THE OSSEOUS LABYRINTH. Arch Otolaryngol. 1943;37(6):819–830. doi:10.1001/archotol.1943.00670030834009
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