A moderate amount of fluid in the tendon sheath of the abductor pollicis longus (APL).
A mild amount of fluid in the tendon sheath of the extensor pollicis brevis (EPB).
An increased T2 signal in the extensor pollicis brevis (EPB) tendon.
A small multiloculated cystic lesion arising from the palmar aspect of the wrist and near the first carpometacarpal joint.
Subchondral cystic changes and bone marrow edema in the trapezium.