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Temporal bone showing changes due to chronic septic inflammation of the middle ear

GC.8868

Middle ear. Portion of the right temporal area of the skull, with the dura mater attached, showing changes due to chronic septic inflammation of the The membrana tympani is destroyed posterior to the manubrium of the malleus. Through this opening are exposed the promontory, the fenestra vestibuli, and the fenestra cochleae. In the posterior osseous wail of the external acoustic meatus a large irregular fistulous opening communicates with the mastoid air-sinuses.

Twentieth century, early