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undescended testicles
A condition in which one or both testicles fail to move from the abdomen, where they develop before birth, into the scrotum. Undescended testicles may increase the risk for development of testicular cancer. Also called cryptorchidism.
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umbilical cord blood
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umbilical cord blood transplantation
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uncontrolled study
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unconventional cancer treatments
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underactive thyroid
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undifferentiated
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unresectable
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