- 著者
 
          - 
             
             Takuto Shonai
             
             Fumihiko Kimura
             
             Junichi Watanabe
             
          
 
          
          
          - 出版者
 
          - The Japanese Society of Internal Medicine
 
          
          
          - 雑誌
 
          - Internal Medicine (ISSN:09182918)
 
          
          
          - 巻号頁・発行日
 
          - vol.61, no.10, pp.1581-1585, 2022-05-15 (Released:2022-05-15)
 
          
          
          - 参考文献数
 
          - 22
 
          
          
          - 被引用文献数
 
          - 
             
             
             8
             
             
          
        
 
        
        
        We herein report two cases of coronavirus disease 2019 (COVID-19) vaccine-induced immune thrombocytopenia (ITP). A 69-year-old Japanese man developed severe thrombocytopenia after COVID-19 vaccination. He had oral bleeding and hemoptysis but no thrombotic symptoms. He improved rapidly with oral prednisolone therapy. A 34-year-old Japanese woman had generalized purpura after COVID-19 vaccination. Her platelet count improved rapidly after treatment with prednisolone and eltrombopag. The occurrence of two cases of ITP after COVID-19 vaccination at a single institution suggests that there could be more such undiagnosed cases, especially cases of mild secondary ITP.