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Liver hypodensity on a CT scan is caused by a variety of factors, according to Radiopaedia, such as benign and malignant neoplasms, focal nodular hyperplasia, focal fatty infiltration, benign epithelial cysts, cysts caused by liver disease and infection, pyogenic abscesses, fungal abscesses, amoebic abscesses, vascular infarctions, lacerations, old ...
What Causes Acute Tubular Necrosis? The most common cause of ATN is a lack of oxygen reaching the cells of the kidney. When blood cannot reach the tissues and cells of the kidneys due to a blockage or restriction, the kidneys can be damaged or destroyed. A heart attack, stroke, and long-standing diabetes can result in reduced blood flow to the kidneys causing cell death and ATN. Harmful substances in the blood can also damage tubules.