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Click 42 year old male with sarcoid tenosynovitis.
Ultrasound examination of the left fingers showed marked thickening and distension of the flexor tendon sheath of the left index and middle fingers (Figure 2) with multiple fluid pockets within the tendon sheaths and areas of increase colour Doppler signal (Figure 3) in keeping with neovascularisation noted within the thickened synovium. On the right, ultrasound examination showed hypoechoic soft tissue swelling on the volar side of right middle finger distal phalanx lying adjacent to the tendon insertion. It showed peripheral and internal flow on colour Doppler assessment. Technique: ultrasound examination using high frequency (12 Megahertz) linear probe with superficial musculoskeletal settings.

Click A 42 year old male with sarcoid tenosynovitis. Axial fat saturated T2 weighted MR of the left hand showing marked tendon sheath thickening and fluid surrounding the flexor digitorum superficialis and flexor digitorum profundus tendons with significant superficial soft tissue swelling. Technique: MR Imaging; magnet strength 1.5T. TE = 82 msec and TR = 5300 msec. Small field of view with surface coil. No contrast

Click A 42 year old male with sarcoid tenosynovitis. Fat saturated axial T2 weighted MR of the right hand showing soft tissue and bone marrow oedema of the middle finger distal phalanx with cortical bone loss. Bone marrow oedema also seen involving other phalanges. Technique: MR Imaging; magnet strength 1.5T. TE = 28 msec and TR = 5300 msec. Small field of view with surface coil. No contrast.

Click A 42 year old male with sarcoid tenosynovitis. Coronal T1 MR of the left hand showing marked tendon sheath thickening and fluid surrounding the flexor digitorum superficialis and flexor digitorum profundus tendons with significant superficial soft tissue swelling. Technique: MR Imaging; magnet strength 1.5T. TE = 21 msec and TR = 847 msec. Small field of view with surface coil. No contrast

Click A 42 year old male with sarcoid tenosynovitis. Coronal T1 weighted MR of the right hand showing soft tissue and bone marrow oedema of the middle finger distal phalanx with cortical bone loss. Bone marrow oedema also seen involving other phalanges. Technique: MR Imaging; magnet strength 1.5T. TE = 21 msec and TR = 847 msec. Small field of view with surface coil. No contrast.

Click A 42 year old male with sarcoid tenosynovitis. Coronal T1 TRIM MR of the left hand showing marked tendon sheath thickening and fluid surrounding the flexor digitorum superficialis and flexor digitorum profundus tendons with significant superficial soft tissue swelling. Technique: MR Imaging; magnet strength 1.5T. TE = 29 msec and TR = 4000 msec. Small field of view with surface coil. No contrast

Click A 42 year old male with sarcoid tenosynovitis. Coronal T1 TRIM MR of the right hand showing soft tissue and bone marrow oedema of the middle finger distal phalanx. Bone marrow oedema also seen involving other phalanges. Technique: MR Imaging; magnet strength 1.5T. TE = 29 msec and TR = 4000 msec. Small field of view with surface coil. No contrast.

Click A 42 year old male with sarcoid tenosynovitis. Sagittal T2 weighted MR of the left hand showing marked tendon sheath thickening and fluid surrounding the flexor digitorum superficialis and flexor digitorum profundus tendons with significant superficial soft tissue swelling. Technique: MR Imaging; magnet strength 1.5T. TE = 82 msec and TR = 3950 msec. Small field of view with surface coil. No contrast

Click A 42 year old male with sarcoid tenosynovitis. Sagittal T2 weighted MR of the right hand showing soft tissue and bone marrow oedema of the middle finger distal phalanx. Bone marrow oedema also seen involving other phalanges. Technique: MR Imaging; magnet strength 1.5T. TE = 28 msec and TR = 3950 msec. Small field of view with surface coil. No contrast.

Click A 42 year old male with sarcoid tenosynovitis. Follow up MR of the left hand approximately 2 years from initial examination. Coronal fat saturated T2 weighted MR of the left hand showing persistent significant tendon sheath thickening and fluid surrounding the flexor digitorum superficialis and flexor digitorum profundus tendons with superficial soft tissue swelling. Technique: MR Imaging; magnet strength 1.5T. TE = 24 msec and TR = 1830 msec. Small field of view with surface coil. No contrast