PROFESSOR TONY WRIGHT, INSTITUTE OF LARYNGOLOGY & OTOLOGY / SCIENCE PHOTO LIBRARY PROFESSOR TONY WRIGHT, INSTITUTE OF LARYNGOLOGY & OTOLOGY / SCIENCE PHOTO LIBRARY
Acute suppurative otitis media, an infection of the middle ear. In this view along the external ear canal, the posterior part of the eardrum (tympanic membrane) is bulging (at left) & there are two bullae (blisters) on the lower parts of the membrane (the dark purple areas at bottom of the image). Otitis media occurs as a sequel to viral or bacterial infection of the upper respiratory tract spreading up the eustachian tube into the middle ear. The subsequent blockage of the eustachian tube results in a build-up of fluid & pus; the increased pressure distorts & may perforate the eardrum, causing temporary deafness.
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