| 1. | Although patients often present with bruises , petechiae , and some mucosal bleeding , the incidence of life - threatening hemorrhage is rare ( 0 . 2 ? 0 . 9 % ) but can be fatal when presenting in vital organs
尽管患者通常表现为淤青、瘀点和粘膜出血，危及生命的出血的发生率很小（ 0 . 2 ? 0 . 9 % ） ，但发生在重要器官的出血会是致命的。 |
