Is there a role of CT in the evaluation of Proptosis

OBJECTIVES: To assess the role of Computed Tomography in the evaluation of proptosis. MATERIAL AND METHODS: 80 patients presenting with proptosis were evaluated for CT scan Orbits. Role of CT was evaluated in characterizing the precise location and extension of the lesions causing proptosis. Final diagnosis was made based on the histopathology, operative findings and clinical outcome. RESULTS: Most common cause of proptosis was Orbital tumors(38.75%) followed by Pseudotumor(12.5%). Among the Tumors Lymphoma and Optic nerve Glioma were the common lesions. Pseudotumor(12.5%) and Graves disease (10%) are the inflammatory causes. Other causes of proptosis include infections (15%), paraorbital tumors (12.5%), Trauma (8.75%) and vascular causes (2.5%). Accuracy of Computed Tomography alone in the diagnosis of etiology of proptosis was 85%.