Such general characteristics of the endothelial cells with proliferating macrocapillarles as gap junctions and thinness or absence of the basement membrane suggested that they be very fragile and susceptible to bleeding.

• 这些增殖性巨大微血管内皮细胞的裂隙结合处比较大，且有些部份的基底膜变薄甚至缺损，这些特徵表示血肿外膜较脆弱较容易出血。