Finkelstein’s Test may be positive, but the area of tenderness should be further proximal from the wrist, oppose to over the first compartment as is seen in DeQuervain tenosynovitis.
Radiographs are not necessary for diagnosis
MRI may be considered for diagnosis if clinical findings are unclear, will likely show peritendinous edema or fluid surrounding the 1st and 2nd extensor compartments. May also see tendinosis, muscle edema, tendon thickening, loss of the normal comma shape of the tendon, and juxtacortical edema.
Intersection syndrome
Distal finger
Superior mesenteric artery syndrome
Finger amputation
Toxic megacolon
Fingertip laceration
Ogilvie's syndrome
Nail avulsion