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Ischaemic leukoaraiosis has been defined as the leukoaraiosis present after a stroke. [12]Diabetes-associated leukoaraiosis has been reported [13]; CuRRL syndrome: increased Cup: Disc Ratio, Retinal GanglionCell Complex thinning, Radial Peripapillary Capillary Network Density Reduction and Leukoaraiosis [2]
Fogging phenomenon in computerized tomography (CT) scanning of the head is vanishing signs of an infarct on the serial CT imaging in a patient with a recent stroke. [1] It is a reversal of the hypodensity on the CT after an acute ischemic stroke.
Those with parenchymal contusion would require frequent follow-up imaging because such contusions may grow large enough to become hemorrhage and exerts significant mass effect on the brain. [3] Cerebral microhemorrhages is a smaller form of hemorrhagic parenchymal contusion and are typically found in white matter. Such microhemorrhages are ...
An abscess and a THAD (white arrow) on a contrast CT in native, arterial, portal and delayed phase. [1] [predatory publisher]Transient hepatic attenuation differences (THAD) are areas of enhancement during the arterial phase of contrast CT of the liver.
[18] [19] When inflammation by T cells begins, astrocytes begin to undergo apoptosis, due to their CD95 receptor, to open up the glia limitans and let T cells into the parenchyma of the brain. [17] Because this process is aided by the perivascular macrophages, these tend to accumulate during neuroinflammation and cause dilation of the spaces. [18]
It is likely to have different pathogenesis than non-alcoholic steatohepatitis which is a diffuse process. FFL may result from altered venous flow to liver, tissue hypoxia and malabsorption of lipoproteins. The condition has been increasingly recognised as sensitivity of abdominal imaging studies continues to improve.
Broadly, a diffuse pattern of GGO can be caused by displacement of air with fluid, inflammatory debris, or fibrosis. Cardiogenic pulmonary edema and ARDS are common causes of a fluid-filled lung. Diffuse alveolar hemorrhage is a rarer cause of diffuse GGO seen in some types of vasculitis, autoimmune conditions, and bleeding disorders.
Severe asthma and various sorts of anemia can cause some degree of diffuse cerebral hypoxia. Other causes include status epilepticus , work in nitrogen -rich environments, ascent from a deep-water dive , flying at high altitudes in an unpressurized cabin without supplemental oxygen , and intense exercise at high altitudes prior to acclimatization.