AA02 Malignant otitis externa

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

Malignant otitis externa is a rare life-threatening infective complication of otitis externa. It is due in the majority of cases to Pseudomonas aeruginosa. Organisms penetrate from the external ear canal into the surrounding deeper tissues resulting in osteomyelitis of the temporal bone and risks of damage to adjacent cranial nerves and septic thrombo-emboli to the brain. Advanced age, uncontrolled diabetes mellitus and immunosuppression are risk factors.

postcoordination

synonyms

• Malignant otitis externa
• Necrotising otitis externa
• Pseudomonas aeruginosa osteomyelitis of the temporal bone

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