Giant cell tumour of the tendon sheath (GCTTS) commonly presents as a slow-growing and painless soft-tissue lesion in the hand. It has a propensity to mimick other benign and malignant lesions of the hand including lipoma, haemangioma, myxoid cyst, synovial sarcoma, aneurysmal bone cyst, fibroma and osteosarcoma. GCTTS has a unique histopathological appearance that aids in definitive diagnosis. Although bony invasion and local aggressive characteristics have only been reported rarely, the treatment of choice is local excision. The following case illustrates a fairly typical presentation of GCTTS with certain atypical features.
- connective tissue disease
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Contributors BP conducted the literature review, designed and wrote the first draft of the case, cited references and collected images. MS examined the patient and provided information on the patient’s history, clinical presentation and work-up. MS also wrote the MRI, ultrasound and plain radiography appearance of GCTTS in the differential diagnosis section, final paragraph of the discussion and learning point 2. MS also edited the entire report and fixed grammatical errors.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Patient consent for publication Obtained.
Provenance and peer review Not commissioned; externally peer reviewed.
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