The cerebral hemispheres are supplied with blood via three major arteries: the anterior, middle, and posterior cerebral arteries. This coronal section through the frontal lobes shows hemorrhage involving the vascular territory of which of these three major cerebral arteries? Answer: The cerebral hemispheres are supplied with blood via three major arteries: the anterior, middle, and posterior... Continue Reading →
Lacunar Infarction of Basal Ganglia
A lacunar infarct is a small infarction, or stroke, that is usually less than about 1 to 1.5 cm in size and typically occurs in deep cerebral structures (e.g. basal ganglia) of hypertensive or diabetic patients with small vessel disease of deep penetrating arteries (e.g. lenticulostriate arteries) . The gross impression of this brain, which belonged to... Continue Reading →
Stroke: Resolving Infarction
Brain infarction, or stroke, refers to brain tissue death due to a lack of life-sustaining blood flow to this area. This brain, which belonged to a person with extensive cardiovascular disease, shows a resolving infarction involving the cerebral cortex of the occipital lobe. Microscopically this yellow-brown discolored area is infiltrated by an army of macrophages that slowly removes the dead brain tissue until,... Continue Reading →