Polycythemia and cor pulmonale are associated with kyphoscoliosis.

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Polycythemia, an increase in red blood cells, and cor pulmonale, a condition that affects the heart and lungs, are often seen in individuals with severe kyphoscoliosis, a condition that involves an abnormal curvature of the spine. This is due to the fact that kyphoscoliosis can lead to respiratory insufficiency and chronic hypoxemia, which triggers the production of erythropoietin and causes an increase in red blood cell production. This, in turn, can lead to an increase in blood volume and pressure in the pulmonary vasculature, which can cause cor pulmonale.

Polycythemia and Cor Pulmonale Are Associated with Kyphoscoliosis