Idiopathic Granulomatous Orbital Inflammation

When an orbital mass is composed of noncaseating granulomatous inflammation and the diagnostic tests fail to show systemic sarcoidosis or other identifiable local or systemic causes, a diagnosis of idiopathic granulomatous orbital inflammation may be established. Idiopathic granulomatous orbital inflammation is an uncommon lesion. Recently, it has been regarded as a histopathologic variant of idiopathic orbital inflammation (IOI or pseudotumor) because of similar clinical and therapeutic behaviors. In this study, we present the clinical features, histopathologic analysis, therapy, and outcome of our patient.