PT - JOURNAL ARTICLE AU - Keiji Matsunaga AU - Takahisa Noma AU - Tetsuo Minamino TI - A 69-year-old woman with extended negative T wave AID - 10.1136/emermed-2019-208715 DP - 2019 Nov 28 TA - Emergency Medicine Journal PG - emermed-2019-208715 4099 - http://emj.bmj.com/content/early/2019/11/28/emermed-2019-208715.short 4100 - http://emj.bmj.com/content/early/2019/11/28/emermed-2019-208715.full AB - Clinical Introduction A 69-year-old woman with hypertension and dyslipidemia developed sudden onset of substernal chest pain at night and was admitted to our hospital the following day. A 12-lead and 18-lead ECG (Nihon Kohden, Japan) was done (figure 1A,B).Figure 1 (A) Twelve-lead ECG. (B) Eighteen-lead ECG.Which is the most likely diagnosis?Reperfused anterior acute myocardial infarctionTakotsubo (stressed) cardiomyopathyPericarditisApical hypertrophic cardiomyopathyWhich is the most likely diagnosis?For answer see page 2.