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Malignant external otitis: a case report and review
Abstract:
Malignant external otitis is an unusual but serious and potentially fatal condition that has only recently been described. It is an invasive pseudomonal infection of the external auditory canal and deep periauricular tissues that characteristically involves the bone and adjacent cartilaginous structures, and it may lead to osteomyelitis of the base of the skull. It typically occurs in elderly diabetic patients. Malignant external otitis can cause severe pain, necrosis of the external auditory canal and progressive palsies of the facial and cranial nerves. Treatment consists of debridement of external auditory canal granulation tissue and long-term therapy with an antipseudomonal cephalosporin or an antipseudomonal penicillin plus an aminoglycoside.
Insights
Malignant external otitis, a severe pseudomonal infection, affects elderly diabetics and can lead to skull base osteomyelitis. Early debridement and long-term antibiotics are crucial for managing this potentially fatal condition.
Area of Science:
- Otolaryngology
- Infectious Diseases
- Oncology
Background:
- Malignant external otitis is a rare but severe invasive infection.
- It primarily affects elderly patients with diabetes mellitus.
- The condition involves the external auditory canal, periauricular tissues, and potentially the skull base.
Observation:
- Characterized by deep pseudomonal infection extending into bone and cartilage.
- Patients often present with severe pain, external auditory canal necrosis, and cranial nerve palsies.
- Osteomyelitis of the skull base is a significant complication.
Findings:
- The infection typically involves Pseudomonas aeruginosa.
- Necrosis and progressive palsies indicate advanced disease.
- Involvement of bone and cartilage signifies the invasive nature.
Implications:
- Prompt diagnosis and management are critical for patient outcomes.
- Treatment requires surgical debridement and prolonged antibiotic therapy.
- Understanding risk factors like diabetes is key for prevention and early detection.