| Primary | Secondary |
|---|---|
| Systemic | |
| Systemic sclerosis | Graft versus host disease |
| Drug-induced nephrogenic systemic fibrosis | |
| Sarcoidosis | Secondary amyloidosis |
| Amyloidosis | Post-radiation |
| Toxic environmental exposure | |
| Storage disorders (hemochromatosis, glycogenosis, Gaucher’s disease, etc) | |
| Lungs | |
| Idiopathic pulmonary fibrosis | Pneumoconiosis |
| Histiocytosis X | Infectious pneumonitis |
| Cryptogenic organizing pneumonia | Tuberculosis |
| Hypersensitive pneumonitis | |
| Inherited disorders | |
| Autoimmune diseases | |
| Transplant rejection | |
| Drug-induced | |
| Post-radiation | |
| Sarcoidosis | |
| Amyloidosis | |
| Heart | |
| Idiopathic restrictive cardiomyopathy | Coronary artery disease/myocardial infarction |
| Pressure-overload heart (long standing arterial hypertension, valvular disease) | |
| Infectious myocarditis | |
| Autoimmune diseases | |
| Transplant rejection | |
| Familial hypertrophic cardiomyopathy | |
| Arrhythmogenic right ventricular cardiomyopathy | |
| Drug-induced | |
| Post-radiation | |
| Sarcoidosis | |
| Amyloidosis | |
| Kidney | |
| Idiopathic nephrotic syndrome | Diabetic glomerulosclerosis |
| Idiopathic membranoproliferative glomerulonephritis | Hypertensive nephrosclerosis |
| Autoimmune glomerular diseases | |
| Drug-induced | |
| Post-radiation | |
| Amyloidosis | |
| Transplant rejection | |
| Liver | |
| Primary biliary cirrhosis | Chronic viral hepatitis |
| Primary sclerosing cholangitis | Schistosomiasis |
| Alcoholic liver disease | |
| Nonalcoholic fatty liver disease | |
| Drug-induced | |
| Toxic environmental exposure | |
| Inherited metabolic disorders | |
| Autoimmune hepatitis | |
| Intestinal bypass | |