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Summary
This case report details a rare intraosseous ganglion in a patient's thumbs. Histology confirmed this unusual finding, previously unreported in this specific bone location.
Area of Science:
- Orthopedic Surgery
- Radiology
- Pathology
Background:
- Intraosseous ganglia are rare cystic lesions originating within bone.
- They are typically found in the long bones of the appendicular skeleton.
- Previous reports have not documented intraosseous ganglia in the metacarpal bases.
Observation:
- A 58-year-old female presented with bilateral, symmetrical cystic lesions at the base of the first metacarpal bones.
- Radiographic imaging revealed well-defined, cystic changes within the bone marrow.
- The lesions were asymptomatic and discovered incidentally.
Findings:
- Histopathological examination of the resected lesion confirmed the diagnosis of an intraosseous ganglion cyst.
- The cyst lining consisted of fibrous tissue with no evidence of inflammation or neoplastic cells.
- Microscopic analysis revealed features consistent with ganglion cyst formation within the bone.
Implications:
- This case expands the known anatomical distribution of intraosseous ganglia.
- It highlights the importance of considering rare diagnoses in bone lesions, even in typical locations.
- Further research may be needed to understand the etiology and pathogenesis of metacarpal base intraosseous ganglia.