Acute mastoiditis lecture

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Acute mastoiditis lecture

  1. 1. ACUTE M ASTOIDITIS ENT - BBH
  2. 2. DEFINITION • It is the inflammation of mucosal lining of antrum and mastoid air cells system.2 Presentation Title / Name / Date ENT - BBH
  3. 3. Etiology • Age • Socio economic group • Organism virulence • Immunocompromised • Cholesteatoma3 Presentation Title / Name / Date ENT - BBH
  4. 4. Pathology • Production of pus under tension • Hyperaemic decalcification • Osteoclastic resorption of bony walls4 Presentation Title / Name / Date ENT - BBH
  5. 5. ROUTES OF SPREAD • Direct bone erosion • Venous thrombophlebitis • Petrosquamous suture • Oval or round windows • Internal auditory meatus5 Presentation Title / Name / Date ENT - BBH
  6. 6. Clinical Features Symptoms: Earache Fever Ear discharge Signs: Mastoid tenderness Sagging of posterosuperior meatal wall TM perforation Swelling over mastoid Hearing loss ENT - BBH6 Presentation Title / Name / Date
  7. 7. 7 Presentation Title / Name / Date ENT - BBH
  8. 8. Investigations • Blood CP • X-ray mastoids • CT scan temporal bones • Ear swab for c/s8 Presentation Title / Name / Date ENT - BBH
  9. 9. Differential Diagnosis • Suppuration of mastoid lymph nodes • Furunculosis of meatus • Infected Sebaceous cyst9 Presentation Title / Name / Date ENT - BBH
  10. 10. TREATMENT • Medical treatment − Hospitalize − Antibiotics − Analgesics • Surgical treatment − Myringotomy − Cortical mastoidectomy10 Presentation Title / Name / Date ENT - BBH
  11. 11. COMPLICATIONS • Subperiosteal abscess • Labyrinthitis • Facial paralysis • Petrositis • Extradual abscess • Subdural abscess • Meningitis • Brain abscess • Lateral sinus thrombophlebitis • Otitic hydrocephalus11 Presentation Title / Name / Date ENT - BBH
  12. 12. • Post-auricular abscess • Zygomatic abscess • Bezold abscess12 Presentation Title / Name / Date ENT - BBH
  13. 13. MASKED (LATENT) MASTOIDITIS • Slow destruction of mastoid air cells • No pain, discharge, fever, mastoid swelling • Mastoidectomy shows extensive destruction of air cells with granulation tissue13 Presentation Title / Name / Date ENT - BBH
  14. 14. 14 Presentation Title / Name / Date ENT - BBH

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