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Primary temporal fossa dermoid cysts. Characterization and surgical management
D R Meyer1, A M Lessner, R P Yeatts
1Lions Eye Institute, Department of Ophthalmology, Albany Medical College, New York 12208, USA.
Ophthalmology
|February 10, 1999
Summary
Dermoid cysts rarely occur in the temporal fossa, often involving bone and displacing the temporalis muscle. Surgical excision is effective, with a coronal approach recommended for optimal outcomes.
Area of Science:
- Neurosurgery
- Head and Neck Surgery
- Pathology
Background:
- Dermoid cysts are congenital tumors that can occur in various locations.
- Temporal fossa dermoid cysts are rare and incompletely described.
Observation:
- This study reviewed five cases of temporal fossa dermoid cysts.
- Patients ranged from 2 to 38 years old.
- Computed tomography (CT) and excisional biopsy were used for diagnosis and treatment.
Findings:
- CT revealed cystic lesions originating anterior to the sphenoid, frontal, and zygomatic bones.
- Temporalis muscle displacement was common.
- Two cysts eroded bone and extended into cranial and orbital cavities.
- Histopathology showed inflammation surrounding the cysts.
- All patients recovered well after surgical excision.
Implications:
- Dermoid cysts can present primarily in the temporal fossa, causing bone erosion and muscle displacement.
- A coronal surgical approach offers wide exposure for complete excision.
- Neurosurgical consultation is advised for cases with suspected dural extension on CT.