The eighteen-time Grand Slam singles champion, who previously had breast cancer in 2010, will start treatment in New York later this month.
Sixty six-years-old Navratilova said both cancers had been caught at an early stage.
Navratilova noticed an enlarged lymph node in her neck during November’s WTA Finals in Fort Worth, Texas.
A subsequent biopsy revealed stage one throat cancer.
During the tests, a lump was also discovered in her breast, which was later diagnosed as an unrelated cancer.
