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Aneurysmal bone cyst of the orbit.
T E Johnson1, D J Bergin, C D McCord
1Department of Ophthalmology, Pacific Presbyterian Medical Center, San Francisco.
Ophthalmology
|January 1, 1988
Summary
An uncommon orbital lesion, an aneurysmal bone cyst, caused left eye proptosis in a 42-year-old woman. This case represents the oldest reported patient with this rare orbital condition.
Area of Science:
- Ophthalmology
- Neurosurgery
- Pathology
Background:
- Orbital lesions can present with proptosis, necessitating accurate diagnosis.
- Aneurysmal bone cysts (ABCs) are rare, benign, expansile bone lesions, typically occurring in long bones and the spine.
- Orbital ABCs are exceptionally rare, with limited case reports in the literature.
Observation:
- A 42-year-old female presented with a 2-month history of left eye proptosis.
- Radiographic imaging revealed a mass in the orbital roof with associated bone erosion.
- The clinical presentation suggested an orbital tumor or other space-occupying lesion.
Findings:
- Excisional biopsy confirmed the orbital mass as an aneurysmal bone cyst.
- Histopathological examination revealed the characteristic features of an ABC.
- The patient's age (42 years) is notable, as ABCs are more commonly diagnosed in younger individuals.
Implications:
- This case highlights the importance of considering rare diagnoses, such as orbital ABCs, in the differential for orbital masses.
- The successful surgical excision of the lesion provided a favorable outcome.
- This report expands the known age range for orbital aneurysmal bone cysts, contributing to the understanding of this uncommon condition.