ATN1 and spinocerebellar ataxia type 1: Chest CT showed the left lung bullae, localized pleural thickening, multiple mediastinal lymphadenopathy. Sensory nerve action potential was not evoked in sural nerve, and the latency of motor latency at bilateral tibial nerve was prolonged. Electroencephalogram was normal. Repeats of CAG in spinocerebellar ataxias 1, 2, 3, 6, 7, 12, DRPLA genes were in normal range.