Enlarged Heart
The heart is a muscular pump about the size of a clenched fist. An enlarged heart isn’t a condition in itself, but a symptom of an underlying problem that is causing the heart to work harder than normal. The range of underlying problems falls generally into two main categories - pathological (linked to actual disease of the heart muscle disease) and physiological (linked to other causes which are overworking the heart muscle, such as high blood pressure or thyroid diseases). Older people are at increased risk. Another name for an enlarged heart is cardiomegaly.