BORN WITHOUT TESTICALS

  MY NEPHEW WAS BORN WITHOUT TESTICALS.  X-RAYS WERE DONE AND ONE WAS FOUND ON THE RIGHT SIDE BUT IT WAS ATROPHIED.  THERE WAS NO SIGN OF A UTERUS AND CHROMOSOME TESTS SHOW 46 XY, SO HE IS MALE.   HE IS FIVE YEARS OLD AND  HIS PENIS IS UNDERSIZED FOR HIS AGE.    MY QUESTION IS, HOW COMMON IS THIS OCCURRENCE AND CAN ANYTHING MEDICALLY BE DONE ABOUT IT?

[HFHS M.D.-AT]

_
Dear Liz,
Thanks for your question.
Your nephew may have a condition known as