Objectives: Assessment of the clinical manifestations of the orbital cavernous heamangioma, evaluation of results after treatment. Subjects and Methods: - Subjects: Patients diagnosed with Orbital cavernous heamangioma at Cho Ray Hospital from January 1, 2010 to December 31, 2011. Methodology: Design: longitudinal, clinical trials, no control group. Sampling: Take a series of cases of orbital cavernous heamangioma. Results: In this study, after 24 months, 26 patients were eligible for the study. Men: 9 (34.6 percent ), women: 21 (65.4 percent ). Age: from 20 to 60, average age 42.9 + or - 8.1. The right orbit was affected in 14cases (53.9 percent )and the left orbit in 12 cases (46.1 percent ). The disease progresses slowly. Axial proptosis without pulse or murmur. The tumor located in muscle cone: 73.1 percent of cases. Papilloedema: 26.9 percent, apilloatrophy 11.5 percent, choroidal folds: 26.9 percent. Diagnosis is based on the results of ultrasound, CT scan and MRI. With ultrasound, the sensitivity was 56.0 percent, specificity: 91.0 percent ; CT scan: 78 percent and 93 percent, MRI: 91.0 percent and 86.0 percent, using the standard of pathology results. Treatment: The tumors were removed successfully by lateral orbitotomy in 22/26 (84.6 percent ). Conclusion: - Orbital cavernous heamangioma is the most common benign orbital tumor in adult. It is more commonly seen in women than in men with slowly progressive unilateral proptosis. The majority of tumors are located in muscle cone. Diagnostic imaging such as ultrasound, cr scan and MRI are valuable in diagnosis and monitoring. - The tumors were removed successfully by lateral orbitotomy.
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