Condoleezza Rice, the national security adviser, shares at least one thing with millions of other American women: she had fibroids, benign tumors in the uterus that required treatment. Ms. Rice, the nominee for secretary of state, entered the hospital for an overnight stay last week to undergo a procedure - uterine artery embolization - that is rapidly becoming an alternative to major surgery for troublesome fibroids. For most women, fibroids, consisting of muscle and fibrous tissue, are no bother. But for millions of others, fibroids can be so large (in some cases, the size of a melon) or so numerous...