Sarcoid optic neuropathy: a case report.
BACKGROUND: Sarcoidosis is frequently overlooked as a cause of optic neuropathy. A cascade of immune interactions has been cited in the pathogenesis. Optic nerve involvement can be the initial manifestation of systemic disease, making the diagnosis even more elusive. Compatible clinicoradiographic and abnormal laboratory findings along with histologic evidence of noncaseating granuloma are necessary to secure the diagnosis of sarcoidosis. METHODS: A case report is presented of a 41-year-old patient with severe papillitis and a junctional scotoma as the first declaration heralding neurosarcoidosis (NS). Co-management with a neuroophthalmologist at an academic teaching hospital prompted the necessary diagnostic studies to preserve vision. RESULTS: Sarcoidosis was diagnosed on the basis of the patient's clinical presentation of rapid vision loss, enlarging mass in the anterior visual pathway revealed by CT and MRI, as well as increased uptake of gallium in the lungs and lacrimal glands. Also considered in the differential diagnosis were glioblastoma, lymphoma, and demyelinating disease. CONCLUSIONS: This case represents an example of triage referral involving optometry and academic ophthalmology. Rapid intervention with intravenous corticosteroids should be considered in the face of atypical optic neuritis with a suspected inflammatory etiology.