１病例介绍患者女性，５１岁，因发热４ｄ伴呕血一次入院。患者４ｄ来发热伴咳嗽、咳粘痰，入院前一天因头晕、出汗，继而呕吐淡咖啡色液体约５０ｍＬ，并黑便１次。患者皮肤瘀点、瘀斑反复隐现７ａ，曾多次查血常规均正常，近４ｄ来瘀点、瘀斑明显增多，以四肢为主。既往... 1 Case Introduction A female patient, 51 years old, was admitted to the hospital with fever for 4 days with vomiting. The patient developed fever with cough, sputum, and sputum 4 days before admission, dizziness and sweating on the day before admission, followed by vomiting of about 50 mL of light brown liquid and melena once. The patient’s skin blemishes and ecchymosis showed lapses for 7 years. The blood routine examinations were normal, and the blemishes and ecchymosis increased significantly in the past 4 days, mainly in the extremities. Past...