Heterotopic ossification in the orbit.
BACKGROUND
While calcification of orbital hemangiomas has been reported previously, no reports exist of heterotopic ossifications occurring within the orbit.


METHODS
A 30-year-old male presented with spontaneous onset of painless progressive proptosis of the left eye, with diplopia. The preoperative radiologic findings are presented. The lesion was excised completely. The pathologic features and probable causes are discussed.


CONCLUSIONS
Heterotopic ossification of the orbit should be considered in the differential diagnosis of an orbital lesion showing radiologic features of calcification or ossification.
Shankar
A
A
Department of Neurosurgery, Christian Medical College and Hospital, Vellore--632004, Tamil Nadu, India.
Daniel
Roy Thomas
RT
Walter
Noel
N
Chandy
Mathew Jacob
MJ
D000328:Adult; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009916:Orbital Diseases / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery*; D014057:Tomography, X-Ray Computed