Orbital Cellulitis in Cancer Patients

Cancer patients present with a unique set of anatomic, physiologic, and treatment-related conditions that may result in infections including orbital cellulitis. These patients are more prone for infections due to immunosuppression caused either by the cancer itself or due to the treatments they are undergoing for their cancer. Tumor-induced, surgery-induced, and radiation-induced changes to the orbital and facial tissues can also contribute to the development of orbital cellulitis. In this chapter, we review the etiology and management of orbital cellulitis in cancer patients and review masquerade syndromes and treatment-induced inflammatory conditions that may mimic this condition.