Acute Mastoiditis

• Etiology: most common complication of acute otitis media
• Imaging: opacification of mastoid air cells
• Complications:
  — Coalescent mastoiditis is mastoiditis with osteomyelitis of mastoid tegmen which can cause epidural abscess and empyema / meningitis / cerebritis / abscess / sigmoid sinus thrombosis
  — Bezold’s abscess is coalescent mastoiditis, osteomyelitis of squamosal temporal bone, extracranial abscess, inframastoid abscess deep to sternocleidomastoid muscle + trapezius

Cases of Acute Mastoiditis