title: Subarachnoid hematoma in staphylococcal septicemia. A report of two cases.
abstract: Two cases of subarachnoid hematoma, due to a Staphylococcus aureus septicemia are described. The clinical as well as the pathological findings suggest a two-step evolution, consisting first in the appearance of a small to moderate stroke, due to a septic embolic occlusion of a leptomeningeal artery and to cerebral infarction, followed by rupture of the artery and the formation of the subarachnoid hematoma, acting as a mass-lesion and leading to death by uncal herniation and brain stem compression. The typical location of the hematoma over the convex surface of a cerebral hemisphere suggests that local factors, such as the vicinity of patent leptomeningeal anastomoses and the fibrosis of the leptomeninges, are probably predisposing factors for its occurrence.
mesh_terms: D000368:Aged; D001921:Brain / Q000473:pathology; D005260:Female; D006406:Hematoma; D006801:Humans; D008297:Male; D008875:Middle Aged; D018805:Sepsis / Q000150:complications* / Q000209:etiology; D013203:Staphylococcal Infections / Q000150:complications*; D013345:Subarachnoid Hemorrhage / Q000209:etiology* / Q000473:pathology