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Intraosseous Dermoid Presenting as an Expansile Lytic Lesion.
Grace E O'Shea1, Victoria L Watson1, Leslie Acakpo-Satchivi2
1Southern Illinois University, Department of Neurosurgery, Springfield, Illinois, United States.
Journal of Neurological Surgery Reports
|July 14, 2022
Summary
This study reports an unusual intraosseous cranial dermoid presenting as a midline lytic lesion. Surgical removal using neuronavigation and cranioplasty confirmed the diagnosis via histopathology.
Area of Science:
- Neuroscience
- Pathology
- Pediatric Surgery
Background:
- Cranial dermoids typically present along the midline, near fontanelles and sutures in infants.
- Intraosseous dermoids are rare, and their presentation can vary significantly.
Purpose of the Study:
- To describe an atypical case of an intraosseous cranial dermoid.
- To highlight the diagnostic and surgical challenges posed by midline-deviating lesions.
Main Methods:
- Case report detailing an intraosseous dermoid presenting as a lytic lesion.
- Surgical excision utilizing neuronavigation for precise localization.
- Cranioplasty for skull defect reconstruction.
- Histopathologic analysis for definitive diagnosis.
Main Results:
- An intraosseous dermoid measuring approximately 15 mm was identified.
- The lesion was located off the midline and not associated with cranial sutures or fontanelles.
- Histopathology confirmed the presence of a dermoid cyst.
Conclusions:
- Intraosseous cranial dermoids can present atypically, deviating from typical midline locations.
- Neuronavigation is a valuable tool for the surgical management of such lesions.
- Early surgical intervention is crucial for managing growing cranial dermoids.
