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Published on: February 29, 2020
Infantile progressive bulbar palsy with deafness
Konstantinos A Voudris1, Angeliki Skardoutsou, Eleni A Vagiakou
1Second Department of Paediatrics-University of Athens, P & A Kyriakou Children's Hospital, Thivon & Levadeias Street, 115 27, Athens, Greece. kvoudris@otenet.gr
Insights
This case report details a 12-month-old boy with progressive bulbar palsy and hearing loss, diagnosed as Brown-Vialetto-Van Laere syndrome. Early auditory assessments are crucial for timely diagnosis in infants with similar symptoms.
Area of Science:
- Neurology
- Genetics
- Pediatrics
Background:
- Progressive bulbar palsy (PBP) and Fazio-Londe (FL) disease are rare neuromuscular disorders affecting cranial nerves.
- Brown-Vialetto-Van Laere (BVVL) syndrome is a rare, often fatal, neurodegenerative disorder characterized by progressive bulbar symptoms and sensorineural hearing loss.
Observation:
- A 12-month-old boy presented with progressive cranial nerve palsies, ventilatory failure, and generalized muscle weakness.
- Initially normal development and hearing were noted, but hearing loss was documented by brainstem auditory evoked potentials (BAEP) six months after symptom onset.
- The patient experienced rapid deterioration, leading to death at 21 months of age.
Findings:
- The clinical presentation initially suggested PBP or FL disease.
- The subsequent development of hearing loss indicated a diagnosis of BVVL syndrome.
- This represents the youngest reported case of BVVL syndrome with severe, rapidly progressing clinical features.
Implications:
- This case highlights the critical importance of serial auditory examinations, including BAEP, in infants and children diagnosed with progressive bulbar palsy.
- Early identification of hearing loss is vital for accurate diagnosis and management of BVVL syndrome.
- Further research into the genetic and molecular underpinnings of BVVL syndrome is warranted to develop targeted therapies.
Abstract:
A 12-month-old boy with progressive cranial nerve palsies followed by ventilatory failure demanding artificial ventilation, generalized muscle weakness, and rapid progression to death at the age of 21 months is described. The patient had normal early development and also apparently normal hearing at presentation of illness but, after 6 months of the onset of the disease, hearing loss was documented by brainstem auditory evoked potentials (BAEP). Although the initial clinical and laboratory findings of this infant could fit with the diagnosis of progressive childhood bulbar palsy or Fazio-Londe (FL) disease, the subsequent appearance of hearing loss suggests that this patient represents a case of progressive bulbar palsy with perceptive deafness or Brown-Vialetto-Van Laere (BVVL) syndrome. To our knowledge, this case of BVVL syndrome with severe clinical features and rapid deterioration leading to death is the youngest one reported in the literature. Furthermore, this case emphasizes the need for repeated auditory examinations, including the performance of BAEP in all cases, especially infants and young children with progressive bulbar palsy.
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