Systemic combined with intravitreal methotrexate for relentless placoid chorioretinitis: A case report

BACKGROUND: We describe a case of relentless placoid chorioretinitis (RPC) that progressed despite administration of peribulbar and systemic corticosteroids, and was resolved by systemic combined with intravitreal methotrexate. CASE SUMMARY: A 16-year-old male reported painless blurred vision and a temporal scotoma in his right eye for one week. Due to widespread distribution and continuous enlargement, multimodal imaging of the lesions led to the diagnosis of RPC. Lesions in the right eye extended despite peribulbar injection of triamcinolone acetonide, but the progression was immediately terminated by a single dose of intravitreal methotrexate. A new fresh lesion occurred in the contralateral eye despite systemic prednisolone but was resolved by oral methotrexate. CONCLUSION: Systemic immunosuppressants should be given upon RPC diagnosis. Intravitreal methotrexate immediately halted progression and may be considered for sight-threatening cases as part of the initial therapy.