106 Contrast-induced encephalopathy after carbon dioxide angiography in the upper extremity and iodinated contrast – a case report

Abstract

titres. Our patient meets the 2015 Consensus Diagnostic Criteria for NMOSD. 1 Treatment with high dose corticosteroids and rituximab lead to clinical and radiological improvement, but she had a clinical relapse 10 months later with new LETM (T3-T7), necessitating increased immunosuppression with more rigorous rituximab dosing of 1000mg every 6 months. Conclusions Double positivity for both Aquaporin-4 and MOG antibodies in NMOSD is rare. We describe a case of doublepositive NMOSD occurring following an infective illness. This case demonstrates that NMOSD may occasionally masquerade as post-infectious Acute Disseminated Encephalomyelitis and highlights the importance of checking antibodies in these patients, given the treatment strategies and risk of relapse differs considerably.