What are the Ultrasound findings of Giant cell tumors of the tendon sheath?
Giant cell tumors of the tendon sheath, or localized pigmented villonodular synovitis, has a characteristic appearance and location on Ultrasound.
This lesion is most often associated with the flexor tendon sheath of the finger and is at least partially in close contact with a tendon sheath; however, the lesion characteristically does not move with the tendon as the tendon is flexed and extended, because the mass is attached to the tendon sheath as opposed to the tendon itself.
Giant cell tumors of the tendon sheath is usually a solid-appearing, homogeneous and hypoechoic mass with detectable blood flow on Doppler imaging.
Although this constellation of findings is commonly observed with Giant cell tumors of the tendon sheath, these lesions may go on to soft tissue biopsy for a histologic diagnosis, especially if symptomatic.