Thus, molecular studies that aim to differentiate the two types of recurrences within RCTs are recommended, although they might be pragmatically difficult to accomplish.

• 因此，分子研究的目标是通过放射性核素计算机体层摄影术来区分两种类型的复发，该研究是被推荐的，尽管他们可能独断地难以实现。