clipped from: news.nationalgeographic.com   
June 26, 2009—Lady Hor, an ancient Egyptian mummy at New York's Brooklyn Museum, is actually Sir Hor, CT scans reveal.

The remains of the Royal Prince, Count of Thebes, and two other ancient Egyptian mummies have been scanned at North Shore University Hospital in New York.

SOUNDBITE (English) Edward Bleiberg, Brooklyn Museum: "We hope to discover such things as the history of disease, to verify gender of the mummies, that have not been unwrapped and to perhaps find the cause of death, and also the age of death."

In that one in particular the soft tissues were really well preserved and you can actually still see the penis is still intact, you can make out some of the structure of the internal organ of the penis and so that's how we were able to tell beyond a reasonable doubt that this was a male."

The casket was believed to contain a female body because the casket did not feature a beard - the usual sign of a male mummy.