What is an infiltrated heart disease?

See below: Infiltrative heart disease refers to any condition in which materials produced by abnormal cell lines or abnormal metabolic processes lay down foreign material into the heart muscle itself, resulting in stiffening of the heart and leading many times to congestive heart failure or less often conduction abnormalities of the heart electrical system. Classic example is multiple myeloma.

Infiltrative: An infiltrative heart disease is one like hemochromatosis or sarcoidosis that causing deposition of certain particles in the heart. It can ultimately lead heart failure or even a conduction system disturbance.