When cancer reached the end stage, any part of the patient's body may be in danger at any time, and it would subsequently be life-threatening.

This was because the entire body system was like an ever-higher stack of building blocks that were already on the verge of collapse and could come crashing down at any moment.

What's more, Smith's son was only twelve years old, and his body had long been stretched to the breaking point throughout his years of fighting cancer.

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