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Endolymphatic sac tumor in a 4-year-old boy
Michael E Kupferman1, Douglas C Bigelow, David F Carpentieri
1Department of Otorhinolaryngology-Head and Neck Surgery, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA.
Summary
Endolymphatic sac tumors (ELST) are rare temporal bone neoplasms. This report details the youngest patient, a 4-year-old boy, diagnosed with and successfully treated for an ELST.
Area of Science:
- Otolaryngology
- Neurosurgery
- Pediatric Oncology
Background:
- Endolymphatic sac tumors (ELST) are uncommon, low-grade papillary neoplasms.
- These tumors are locally aggressive and originate in the temporal bone.
- ELST are rarely diagnosed in pediatric patients.
Observation:
- A 4-year-old boy presented with otitis media and acute facial nerve palsy.
- Audiometry confirmed profound sensorineural hearing loss.
- Imaging revealed a 3-cm expansile lytic lesion on the petrous bone.
Findings:
- Initial biopsy was suspicious for ELST.
- Surgical resection via a transtemporal-transcochlear approach was performed.
- Tumor confirmed as ELST through histopathology and immunohistochemistry.
- Facial nerve preservation and transposition were successful.
- No recurrence at 6-month follow-up, with improved facial nerve function.
Implications:
- This case represents the youngest reported patient with an ELST.
- Highlights the importance of considering ELST in pediatric patients with relevant symptoms.
- Demonstrates successful surgical management and functional preservation in a pediatric case.
- Contributes to understanding the presentation, evaluation, and treatment of pediatric ELST.