Tamoxifen is in widespread use for treatment of hormone sensitive breast cancer. Counselling may help people cope with emotional symptoms related to lung cancer. The benefits of screening in breast cancer are controversial. Cushing died in 1994 of prostate cancer. Cazale chose to continue acting despite having been diagnosed with lung cancer. The effect of consumption on prostate cancer is not conclusive. Some women experience PTSD from their experiences related to breast cancer and mastectomy. The balance of benefits versus harms of breast cancer screening is controversial. Smoking accounts for about 85% of lung cancer cases. It is unclear if exercise training is beneficial for people living with advanced lung cancer. Polonium-210 in tobacco contributes to many of the cases of lung cancer worldwide. Gopalan's research led to advancements in the knowledge of hormones pertaining to breast cancer. Sea cucumbers are under investigation for use in treating ailments including colorectal cancer. Walker died in July 2007 of lung cancer. There are a number of types of pancreatic cancer.