Thymoma-associated anti-LGI1 encephalitis and myasthenia gravis: A unique combination with autoantibodies

Autor: Akane Satake, Takamura Nagasaka, Takafumi Kurita, Hiroaki Murata, Takanori Hata, Hiroyuki Shinmura, Hirochika Matsubara, Kazumasa Shindo, Yoshihisa Takiyama
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: eNeurologicalSci, Vol 27, Iss , Pp 100395- (2022)
Druh dokumentu: article
ISSN: 2405-6502
DOI: 10.1016/j.ensci.2022.100395
Popis: We report a 77-year-old woman with a thymoma, anti-LGI1antibody associated encephalitis (LGI1 encephalitis), and MG accompanied by positive anti-acetylcholine receptor antibodies (AchR Ab) and anti-titin antibodies (titin Ab). She was treated with thymomectomy followed by immunosuppressive therapy, which resulted in immediate amelioration of motor weakness and gradual improvement of cognitive impairment over the next two years. LGI1 Ab were positive at two months after thymomectomy, followed by negative conversion demonstrated on 1 year examination. The AchR Ab level had gradually decreased but titin Ab was positive on re-examination after two years, although the cognition and motor impairment symptoms had been alleviated. In patients with suspected autoimmune encephalitis, the detection of several autoantibodies including LGI1 and thymomas provides useful information for making an accurate diagnosis.
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