Midbrain encephalitis associated with neoplasia.

The article presents a case study of a 52-year-old man with a history of myocardial infarction presented with difficulty in focusing. Physical examination, magnetic resonance imaging (MRI), and positron emission tomography scan results led to the diagnosis of Parinaud's syndrome, which developed as part of paraneoplastic limbic encephalitis. High-dose methylprednisolone and intravenous immunoglobulin were administered, pharyngeal lesion was removed surgically after which the patient stabilised. INSET: Learning points.