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The liver parenchyma is the functional tissue of the organ made up of around 80% of the liver volume as hepatocytes. The other main type of liver cells are non-parenchymal. Non-parenchymal cells constitute 40% of the total number of liver cells but only 6.5% of its volume. [11]
Generally, intrinsic causes are from lung parenchyma diseases that cause inflammation or scarring of the lung tissue, such as interstitial lung disease or pulmonary fibrosis, or from having the alveoli air spaces filled with external material such as debris or exudate in pneumonitis. [3]
Interstitial lung disease (ILD), or diffuse parenchymal lung disease (DPLD), [3] is a group of respiratory diseases affecting the interstitium (the tissue) and space around the alveoli (air sacs) of the lungs. [4] It concerns alveolar epithelium, pulmonary capillary endothelium, basement membrane, and perivascular and perilymphatic tissues. It ...
The removed tissue is examined histopathologically by microscopy to confirm the presence and pattern of fibrosis as well as other features that may indicate a specific cause, such as specific types of mineral dust or possible response to therapy, e.g. a pattern of so-called non-specific interstitial fibrosis.
Fibrosis can be a normal connective tissue deposition or excessive tissue deposition caused by a disease. [ 2 ] Repeated injuries, chronic inflammation and repair are susceptible to fibrosis, where an accidental excessive accumulation of extracellular matrix components, such as the collagen, is produced by fibroblasts, leading to the formation ...
The cause is unknown, hence the term idiopathic. [2] Risk factors include cigarette smoking, acid reflux disease (GERD), certain viral infections, and genetic predisposition. [1] The underlying mechanism involves scarring of the lungs. [1] Diagnosis requires ruling out other potential causes. [3]
Cirrhosis, also known as liver cirrhosis or hepatic cirrhosis, chronic liver failure or chronic hepatic failure and end-stage liver disease, is an acute condition of the liver in which the normal functioning tissue, or parenchyma, is replaced with scar tissue and regenerative nodules as a result of chronic liver disease.
Chronic liver disease in the clinical context is a disease process of the liver that involves a process of progressive destruction and regeneration of the liver parenchyma leading to fibrosis and cirrhosis. [1] "Chronic liver disease" refers to disease of the liver which lasts over a period of six months.