原发性纤维蛋白溶解症（原纤）较为少见[1]，而肺癌以原纤为首发表现更为少见，且易误诊。我们收治1例，为引起同道注意，特报告如下。1病例介绍患者，女，60岁，已婚，汉，农民。因持续性无痛全程血尿1天伴牙龈持续出血半天于1998年12月31日入院，住院号22426。1天前未见诱因 Primary fibrinolysis (fibrillation) is relatively rare [1], and lung cancer is less common in fibrils and is often misdiagnosed. We treated one case. In order to attract the same attention, the special report is as follows. 1 Case Introduction Patients, female, 60 years old, married, Han, farmer. He was continuously admitted to the hospital on December 31, 1998 due to persistent painless hematuria for 1 day with continuous gingival bleeding. The hospital number was 22426. No cause was seen 1 day ago.