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Adipose tissue (also known as body fat or simply fat) is a loose connective tissue composed mostly of adipocytes. [1] [2] It also contains the stromal vascular fraction (SVF) of cells including preadipocytes, fibroblasts, vascular endothelial cells and a variety of immune cells such as adipose tissue macrophages.
Epicardial fat tends to be concentrated along the coronary sulcus. [4] [5] There are two coronary sulci in the heart, including left and right coronary sulci.
These categories are called epicardial (above the epicardium, or the outermost tissue of the heart) and microvascular (close to the endocardium, or the innermost tissue of the heart). [ 2 ] Reduced function of the coronary arteries can lead to decreased flow of oxygen and nutrients to the heart.
Pericardial cysts most often are asymptomatic, with 50 to 75% of patients experiencing no symptoms. [1] [2] The presentation of symptomatic cysts depends on the cyst location and effects on nearby structures, including the heart, lungs, and esophagus.
A typical fat cell is 0.1 um in diameter [2] with some being twice that size, and others half that size. However, these numerical estimates of fat cell size depend largely on the measurement method and the location of the adipose tissue. [2] The fat stored is in a semi-liquid state, and is composed primarily of triglycerides, and cholesteryl ester.
Excessive fat around organs in midlife could contribute to Alzheimer’s risk due through neuroinflammation, the results of three small studies have suggested.
Fat has increased intensity in T1-weighted images. However, it may be difficult to differentiate intramyocardial fat and the epicardial fat that is commonly seen adjacent to the normal heart. Also, the sub-tricuspid region may be difficult to distinguish from the atrioventricular sulcus, which is rich in fat.
Fat is a type of tissue made up of cells called adipocytes, involved in digestion and metabolism.