Some Cancers Disappear Untreated, Study Finds

From The International Herald Tribune:

Cancer researchers have known for years that it was possible in rare cases for some cancers to go away on their own. There were occasional instances of melanomas and kidney cancers that just vanished. And neuroblastoma, a very rare childhood tumor, can go away without treatment.

But these were mostly seen as oddities - an unusual pediatric cancer that might not bear on common cancers of adults, a smattering of case reports of spontaneous cures. And because almost every cancer that is detected is treated, it seemed impossible even to ask what would happen if cancers were left alone.

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