NCIt definition : The failure of one or both testes of a male fetus to descend from the abdomen into
the scrotum during the late part of pregnancy. If not surgically corrected in early
childhood, males may be at increased risk for testicular cancer later in life.;
Alternative definition : NCI-GLOSS: 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.; NICHD: The persistent failure of one or both testes to descend into the scrotum.;
Codes from synonyms : CDR0000044388; CDR0000046458;