He has general weakness and chronicmuscle tremor developed for a long time so ADL was depended. Intermittentlychoking was found when ate diet. In recently days, he ate a lot of banana athome. According to his son, the patient intermittently had shortnes sof breathdeveloped for 2-3 days. This time, because of more tachypena developed so he wasbrought to our emergency department in the night of 2019/12/06. He did not havefever, cough, yellowish sputum, chest pain, chest tightness, abdominal pain,nausea, and vomiting before admission. Other symptom was unclear by his son.