Fibrinoid necrosis

Fibrinoid necrosis is a form of necrosis, or tissue death, in which there is accumulation of amorphous, basic, proteinaceous material in the tissue matrix with a staining pattern reminiscent of fibrin. It is associated with conditions such as immune vasculitis (e.g. Polyarteritis nodosa), malignant hypertension, preeclampsia, or hyperacute transplant rejection.