Dengue fever other imaging findings

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Chest radiography

Chest radiography – a small heart shadow indicates intravascular depletion. A large heart (cardiothoracic ratio >0.55) together with prominent pulmonary vascular markings, “bat’s wings” appearance ± Kerley B lines are suggestive of intravascular hypervolaemia and pulmonary oedema. The lung volume may be reduced by the pleural effusion and upward displacement of the diaphragm by gross ascites.