the pathological characteristics of these lesions ( notably the presence of microaneurysms , intramural fibrin , and lipid ) and the location of lesions within the brain all suggest that they arise from mechanical distension , which destroys the integrity of the vessel and allows plasma insudation into the wall ( lipohyalinosis ) , finally leading to occlusion or rupture .
C0015982
fibrin
C0032105
plasma