Chen Jiakun, a seven-year-old boy from east China's Shandong province yawns as his heart is exposed in a ward in a hospital in Shanghai. Chen is in danger because his heart is only protected by his skin. According to the hospital, the boy is also suffering five other heart diseases called "Cantrell's pentalogy" , characterized by defects of the lower sternum, anterior diaphragm andparietal pericardium, an omphalocoele, partial herniation of the heart through the diaphragmatic defect and congenital heart disease. [newsphoto]

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