Fig. 1
From: Dry synovitis, a rare entity distinct from juvenile idiopathic arthritis
Radiological findings of Dry Synovitis in comparison with RF negative polyarticular JIA. (a- > c) Imaging of the right wrist of an 11y old girl with DS. a Plain X-ray: no significant bone erosion. b Fat suppressed T1-weighted gadolinium-enhanced MRI, frontal view: diffuse mild synovial hypertrophy (arrow heads) with moderate gadolinium enhancement, involving joint synovium (with similar findings on peritendinous synovium). c Fat suppressed T2-weighted MRI, axial view: no significant joint or peritendinous effusion. (d- > f) Imaging of the right wrist of a 13y old girl with DS d. Plain X-Ray: subtle carpal bone erosion (arrow). e Fat suppressed T2-weighted MRI, frontal view: bone marrow oedema (*) with no joint effusion. f. Fat suppressed T1-weighted gadolinium-enhanced MRI, axial view: diffuse synovial joint enhancement (arrow heads) and bone marrow oedema (*). (g- > i) Imaging of the right wrist of a 11y old girl with polyarticular JIA. g Plain X-Ray: diffuse severe bone erosion. h Fat suppressed T2-weighted MRI, frontal view: joint effusion involving both joint and peritendinous component (*). i Fat suppressed T1-weighted gadolinium-enhanced MRI, axial view: diffuse proliferative hypertrophy of joint synovium (arrow heads) with intense gadolinium enhancement