Otitis Media Guide :: Mastoiditis :: 3_1
 Mastoiditis  
Mastoiditis

Mastoiditis

Description : In some cases of incompletely treated acute suppurative otitis media, the infection within the middle ear cleft may persist in a chronic and indolent form and spread throughout the mastoid air cell system and into the bony septa which separate these mastoid cells.

There are no pathognomonic otoscopic features.

The middle ear in this patient is filled with a creamy white purulent exudate under pressure which causes the drum to bulge outwards.

Note the vasodilatation of the vessels over the surface of the drum.

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