Fibrosis's the formation or development of excess fibrous connective tissue in an organ or tissue as a reparative or reactive process, as opposed to a formation of fibrous tissue as a normal constituent of an organ or tissue. The term's also sometimes used to describe a normal healing process, but this usage's less common. Types Cystic fibrosis of the pancreas and lungs Injection fibrosis, which can occur as a complication of intramuscular injections, especially in children Endomyocardial fi… (More on Fibrosis)