Karen Weintraub

A U.S. serviceman severely injured several years ago in an IED blast in Afghanistan has received the world's first total penis and scrotum transplant, surgeons at the Johns Hopkins University School of Medicine announced Monday. The man, whose identity was not released, is recovering well and expected to regain both urinary and sexual function, Richard Redett, who led the transplant team, said at a Monday telephone news conference. Click here to read the story on USAToday.com

Mice that live in the basements of New York City apartment buildings — even at the most exclusive addresses — carry disease-causing bacteria, antibiotic-resistant bugs and viruses that have never been seen before, a new study from Columbia University finds. Researchers collected feces from more than 400 mice captured over a year in eight buildings in Manhattan, Brooklyn, Queens and the Bronx. The team then analyzed the droppings for bacteria and viruses. The viruses included

Doctors have long wondered why breast cancer patients are more likely to see their cancer spread within the first 18 months after a lumpectomy or mastectomy. A new study suggests the wound healing that follows surgery may trigger this spread. As the immune system works to heal the surgical scar, it stops restraining cancer cells that have wandered far from the tumor site, according to the study published Wednesday in Science Translational Medicine. Without this brake, those c

He’s a professor at Harvard Medical School, but in many ways, Dr. Victor Gurewich is an outsider. His research is funded by a small family foundation, and he hasn’t tried for a federal grant in decades. He’s a primary care doctor whose work tramples on the terrain of cardiologists and neurologists. So it’s perhaps not surprising that, more than 20 years after figuring out a combination therapy that he believes is a safer, more effective way to treat heart attacks and strokes,