Purpose: To determine the types and frequency of orbital tumors in the older adult population.
Design: Retrospective consecutive case series.
Participants: Two hundred consecutive patients aged 60 years or older with an orbital tumor managed at a tertiary referral center.
Main outcome measures: The relative incidence and management of orbital tumors in patients aged 60 years or older.
Results: Of approximately 950 consecutive patients with orbital space-occupying lesions managed over a 25-year period on the Oncology Service, 200 patients (21%) were 60 years or older at the time of diagnosis. The orbital tumor was unilateral in 183 patients (92%) and bilateral in 17 patients (8%). The most common clinical features at presentation included mass in 51 patients (26%), proptosis in 36 (18%), and pain in 30 (15%). The mean duration of symptoms was 11 months before referral. The orbital tumor was malignant in 125 patients (63%) and benign in 75 (27%). The most common diagnoses were malignant lymphoma in 47 patients (24%), idiopathic orbital inflammation in 19 (10%), and cavernous hemangioma in 15 (8%). The diagnosis was made with clinical findings and imaging studies in 58 patients (29%) and additional histopathologic examination in 142 patients (71%). Of 217 tumors, the main tumor location was in the superior half of the orbit in 106 lesions (49%), in the anterior orbit in 100 (46%), and in the extraconal space in 135 (62%). Imaging studies showed a mass with well-defined margins in 90 tumors (41%) and ill-defined margins in 127 (59%). The tumors were solid in 203 cases (94%), cystic in 6 (3%), and mixed in 8 (3%). Over a mean of 31 months follow-up, 50 (25%) patients had orbital tumor-related systemic involvement (metastasis or lymphoma), and 150 (75%) remained free of systemic involvement.
Conclusions: Orbital tumors in the senior adult population are malignant in 63% of cases. Malignant lymphoma is the most common tumor in this age group, accounting for 24% of cases. Overall, 25% of patients have systemic problems related to the orbital process develop, so systemic evaluation is warranted.