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Most people with SCT are expected to live a long and healthy life. However, it is also very much on a case-to-case basis, since these tumors can vary in size and malignancy. For newborns, the most immediate danger is the size of the tumor. If it is highly vascularized, it can put the newborn at risk for a condition called hydrops, in which the heart begins to fail as a result of large tumor. Surgery to remove highly vascularized tumors can also pose the risk of heavy blood loss, especially in newborns. For toddlers just recently diagnosed, the risk of malignancy is higher since the tumor has had more time to grow. The change of malignancy means the chance of the tumor being able to metastasize to other parts of the body and make it harder to treat.