NEW YORK(AP) A report says tennis great Martina Navratilova has been diagnosed with breast cancer and that her prognosis is said to be excellent.

People magazine's Web site posted a story Wednesday quoting Navratilova saying ``I cried'' after being informed of the diagnosis following a routine mammogram.

The report says Navratilova had a lumpectomy and will begin six weeks of radiation therapy next month. It added that the nine-time Wimbledon women's singles champion was diagnosed with a noninvasive form of breast cancer called ductal carcinoma in situ, or DCIS.

A surgeon at UC San Francisco says DCIS strikes almost 70,000 American women a year and that ``there's only a one-percent chance of anyone with this diagnosis would die of breast cancer.''