Incidentally detected subclinical limbic encephalitis on ¹⁸F-Fluorodeoxyglucose positron emission tomography/computed tomography in a patient with myasthenia gravis and sarcoidosis: a rare immunological triad?

Limbic encephalitis is the inflammation of the medial temporal lobe structures due to direct infectious or indirect autoimmune etiology. Sarcoidosis is a rare cause of limbic encephalitis, has been reported by some authors. Association has also been reported between sarcoidosis, myasthenia gravis, and limbic encephalitis. We report an interesting case of ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography demonstrating limbic encephalitis and sarcoidosis in a known case of myasthenia gravis. (author)