Trochlear calcification mimicking an orbital foreign body.
A 39-year-old man presented with diplopia 1 day following left orbit trauma. CT scan and ultrasound showed a left trochlear hyperintensity that was interpreted by both the radiologist and echographer as a metallic foreign body. Surgical exploration failed to identify a foreign body. The patient presumably had preexisting trochlear calcification with a post-traumatic nonconcomitant small-angle vertical deviation and diplopia. Calcification should be considered in the differential diagnosis of trochlear hyperintensity noted on imaging studies.
Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA. eshriver@med.miami.edu
Erin M
EM
Shriver
Craig A
CA
McKeown
Thomas E
TE
Johnson
D000328:Adult; D002114:Calcinosis / Q000000981:diagnostic imaging* / Q000188:drug therapy; D002437:Cefazolin / Q000627:therapeutic use; D003937:Diagnosis, Differential; D004172:Diplopia / Q000175:diagnosis; D004359:Drug Therapy, Combination; D005129:Eye Foreign Bodies / Q000000981:diagnostic imaging* / Q000188:drug therapy; D015807:Eye Injuries, Penetrating / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008775:Methylprednisolone / Q000627:therapeutic use; D009915:Orbit / Q000293:injuries*; D014057:Tomography, X-Ray Computed; D020432:Trochlear Nerve Diseases / Q000000981:diagnostic imaging* / Q000188:drug therapy; D014463:Ultrasonography; D014792:Visual Acuity / Q000502:physiology
D002437:Cefazolin; D008775:Methylprednisolone