Orbital mucocele: Orbital Masquarading Syndrome

Purpose To discuss the clinical features and management in orbital mucucele. Methods Six patients who were presented with progressive proptosis and orbital mass were included in our analysis. One patient had a history of gastric cancer, one patient had a history of previous trauma. All patients underwent surgery and excisional biopsies for differential diagnosis. The pathological diagnosis was consistent with mucocele in all cases. Three patients were controlled well with the initial surgical procedure, whereas 3 patients needed additional surgeries with sinus drainage. Results All patients had inferior proptosis, as the tumor was involving superior and medial orbit. CT imaging demonstrated bone erosions in 4 cases. Surgically all cases represent cystic mass lesions without any solid component. Adding sinus drainage at the initial surgery may prevent recurrences in orbital mucocele. Conclusions Orbital mucocele may masquarade lymphoid and cystoid orbital tumors, and all cases should be biopsied for differential diagnosis. In confirmed lesions drainage of the paranasal sinuses may prevent recurrences significantly.