[Analysis of 24 cases of misdiagnosed orbital tumors with visual impairment as the presenting symptom].

24 cases of orbital tumors misdiagnosed as optic neuritis or optic atrophy were located at the orbital apex or on the optic nerve, comprising meningioma 9 cases, cavernous hemangioma 5 cases, neurilemmoma 5 cases, neogrowths form the nasal cavity or paranasal sinuses 3 cases, leiomyoma 1 case and hemangiopericytoma 1 case. The authors analyzed the causes of CT examination in early differential diagnosis.