eng Science and Education Publishing American Journal of Medical Case Reports 2374-216X 2015-01-23 3 2 42 45 10.12691/ajmcr-3-2-7 AJMCR2015327 article Motoharu Shibusawa m_sibusawa@hotmail.com 1 Takaaki Matsumura 2 Hisashi Tsutsumi 2 Yuuji Itou 3 Yoshiaki Shibata 3 Department of Hematology Medicine, Tokyo Metropolitan Health and Medical Treatment Corporation, Tama-Hokubu Medical Center, Tokyo, Japan Department of Gastrointestinal Medicine, Tokyo Metropolitan Health and Medical Treatment Corporation, Tama-Hokubu Medical Center, Tokyo, Japan Department of Pathology, Tokyo Metropolitan Health and Medical Treatment Corporation, Tama-Hokubu Medical Center, Tokyo, Japan An autopsy case of gastric cancer accompanied by disseminated intravascular coagulation (DIC) that resulted in unexpected acute myocardial infarction (AMI) is reported. A 66-year-old man was introduced to our hospital and was diagnosed with gastric cancer accompanied by bone marrow carcinomatosis with DIC. On the fourteenth day of admission, he experienced dyspnea. He died on the fifteenth day. An autopsy was performed. The autopsy findings revealed myocardial infarction from the lateral to anterior and posterior ventricular walls, thromboembolism in the right coronary artery, and nonbacterial thrombogenic carditis of the mitral valve. A diagnosis of AMI was made by the autopsy findings. In cases accompanied by DIC, thrombus may develop in coronary arteries, resulting in AMI. In these patients, the typical symptoms of AMI and ST-segment elevation and pathologic Q waves on electrocardiogram are often not observed. The importance of this phenomenon warrants consideration in clinical practice. http://pubs.sciepub.com/ajmcr/3/2/7/ajmcr-3-2-7.pdf disseminated intravascular coagulation acute myocardial infarction