03/22/2010 05:12 am ET Updated May 25, 2011

Jennifer Lyon Dead: 'Survivor' Contestant Dies At 37

Jennifer Lyon, who placed fourth on Survivor: Palau in 2005, died at her home in Oregon Tuesday night, PEOPLE has confirmed. She was 37.

The reality TV star was first diagnosed with stage-three breast cancer a few months after she wrapped Survivor, and opted for a modified, radical bilateral mastectomy, followed by courses of chemotherapy and tamoxifen, a drug used to prevent recurrence.