State Rep. Deborah Mell says she's been diagnosed with Stage 1 breast cancer.
Mell tells the Chicago Sun-Times that she's undergoing tests to help determine her treatment options. She didn't give any details.
The 43-year-old Chicago Democrat is the sister of former Illinois first lady Patti Blagojevich and the daughter of Chicago Alderman Dick Mell.
Since 2009, she's represented the 40th Illinois House District, which is on Chicago's north and northwest sides.