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Ventricular hypertrophy. X-ray of the human chest showing left ventricular hypertrophy, the enlarge- ment of the left ventricle of the heart. The shadow of the enlarged heart (at centre) protrudes abnormally towards the right of the image, that is, over the region of the left lung. Hypertrophy of the left ventricle may be associated with hypertension in which an abnormally high blood pressure causes enlargement of the heart. Another cause is mitral incompetence, the failure of the mitral heart valve to control the one-way flow of blood into the left ventricle. Severe ventricular heart disease is associated with the term "heart failure", and carries a poor prognosis.
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