Abstract
The clinical course of all intraorbital space-occupying lesions is essentially the same, regardless of their nature. Characteristically, progressive unilateral proptosis, disturbance of ocular motility, and perhaps decreased vision and mild pain are noted. Any one or all of these signs may also occur with certain intracranial and periorbital processes secondarily affecting the orbit. If physical examination and plain skull or orbital roentgenograms fail to establish the nature or even the presence of a lesion with fair certainty, the clinician may elect to observe the patient rather than to risk orbital exploration, a course which can be hazardous. If the diagnosis remains in doubt, special roentgen procedures such as carotid angiography may be advantageous in visualizing the ophthalmic arterial complex. This technic has been described by a number of authors (1, 3–7, 10–12, 14), its practical importance being first recognized by Grino and Billet (7), and emphasized more recently by Krayenbuhl (10, 11) and...
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