Giant Cell Bone Tumour of Tendon Sheath

(redirected from Proliferative Synovitis)
A potentially recurring lesion of the acral flexor tendon sheath which is a variant of fibrous histiocytoma; it reaches a maximum of 3 mm, and may erode into bone
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In PIN palsy, a bulging mass due to chronic proliferative synovitis or acute/subacute synovial effusion of the elbow joint may cause compression of the PIN against the fibrous edge of the supinator muscle.
Gout can rarely coexist with rheumatoid arthritis, (8) but it is perhaps more frequently misdiagnosed as rheumatoid arthritis because of its proliferative synovitis (3) and because 10% to 20% of patients with rheumatoid arthritis have elevated uric acid levels.
Histopathologic examination of right elbow tissue and elbow prosthesis revealed acute and chronic proliferative synovitis with dense fibrous tissue, along with acute inflammatory cells.
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