Please help raise funds for lifesaving surgery

My father went to see a specialist twelve months ago complaining about pain in his abdomen and rectum. The treating specialist had initial diagnosis of anal fistula and administered treatment. We went for follow ups only to be told that for an elderly person it takes time to heal. Subsequently we went for a second opinion and the current specialist advised it is a colorectal cancer. It is operable and successful surgery and post treatment can save my fathers life. I am a single parent and can not afford the cost of the surgery and post operative treatment. Please kindly consider donating any amount. Thank you in advance.