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[Diagnosis and management of Mondini malformation]
Abstract:
Owing to the development of imaging technology and audiology, some of the sensorineural hearing loss cases that were previcusly considered to be of unknown cause have been found to be inner ear malformation. Five cases of Mondini malformation are reviewed in this paper. CSF otorhinorrhea occurred in four cases, Klippel-Feil syndrome in three, and concurrent otosclerosis in one patient. In discussion, the authors point out that: 1) CT scanning is an supplement to audiologic tests for such patients; 2) perilymph fistula in Mondini malformation is often found at the oval window and its vicinity, the foot plate and the round window; 3) the fistula can be treated by plugging with fascial tissue via tympanoplastic approach with endaural incision. The mucosa around the fistula should be stripped away and the plugging tissue should be of dumb-bell shape.
Insights
Mondini malformation, a cause of sensorineural hearing loss, is often associated with cerebrospinal fluid (CSF) leaks. Surgical plugging of perilymph fistulas is an effective treatment for hearing loss in these cases.
Area of Science:
- Otolaryngology
- Neuroscience
- Medical Imaging
Background:
- Sensorineural hearing loss of unknown origin can be linked to inner ear malformations.
- Advances in imaging and audiology aid in diagnosing these conditions.
Observation:
- This paper reviews five cases of Mondini malformation.
- Associated conditions included CSF otorhinorrhea (4 cases), Klippel-Feil syndrome (3 cases), and otosclerosis (1 case).
Findings:
- CT scanning complements audiologic tests for diagnosing inner ear malformations.
- Perilymph fistulas in Mondini malformation commonly occur near the oval and round windows.
- Surgical plugging of fistulas using fascial tissue is a viable treatment.
Implications:
- Early diagnosis of inner ear malformations is crucial for managing hearing loss.
- Understanding fistula locations aids surgical planning.
- Effective surgical techniques can improve outcomes for patients with Mondini malformation and hearing loss.