Tendon sheath ganglion aspiration

Cause, clinical and ultrasound findings

• Inflammatory arthritis, athletic activity or injury may cause a ganglion.

• Pain and swelling are typical.

• The tendon sheath is distended with fluid and possible synovial tissue (tenosynovitis), with a large amount of low-echo ‘fluid’ either in a separate ‘sac’ or distending the tendon sheath massively.