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Recurrent meningitis and Mondini dysplasia
L A Ohlms1, M S Edwards, E O Mason
1Department of Otolaryngology and Communicative Sciences, Baylor College of Medicine, Houston, TX 77030.
Abstract:
Three infants with cerebrospinal fluid otorrhea and recurrent meningitis due to Mondini dysplasia have been treated at Baylor College of Medicine, Houston, Tex; 39 other patients with this association have been described. This review highlights the characteristics and embryologic basis of the malformation. The clinical evaluation of an infant with recurrent meningitis is outlined, and the importance of brain-stem response audiometry and thin-cut computed tomography of the temporal bones is discussed. Surgical management depends on the functional status of the dysplastic ear; usually, a stapedectomy is performed and the vestibule is obliterated. Although the surgical failure rate is 30% after one procedure, early identification of the dysplasia and prompt surgical management diminish morbidity and mortality and permit early habilitation of the child with congenital hearing impairment.
Insights
Mondini dysplasia can cause cerebrospinal fluid (CSF) otorrhea and recurrent meningitis in infants. Early diagnosis and surgical intervention, though with a 30% failure rate, improve outcomes and hearing habilitation.
Area of Science:
- Otolaryngology
- Pediatric Neurology
- Developmental Biology
Background:
- Mondini dysplasia is a congenital inner ear malformation.
- It is associated with cerebrospinal fluid (CSF) otorrhea and recurrent meningitis.
- Understanding its embryologic basis is crucial for diagnosis and management.
Observation:
- Three infants with this association were treated at Baylor College of Medicine.
- Thirty-nine similar cases have been previously reported.
- Clinical evaluation involves assessing recurrent meningitis and hearing impairment.
Findings:
- Brain-stem response audiometry and thin-cut computed tomography (CT) of temporal bones are key diagnostic tools.
- Surgical management, often involving stapedectomy and vestibule obliteration, depends on the ear's functional status.
- A 30% surgical failure rate exists after a single procedure.
Implications:
- Early identification and prompt surgical management of Mondini dysplasia reduce infant morbidity and mortality.
- Timely intervention facilitates early habilitation for children with congenital hearing impairment.
- This condition underscores the importance of a multidisciplinary approach in pediatric neuro-otology.