After a conversation with the pastor of his church, Downey got another opinion, and by that time the tumour had doubled in size.
"Fortunately, they were able to remove it and things seemed to be OK,'' he said.
However, a follow-up scan two months later found unusual lymph node activities and a series of biopsies revealed Downey had stage 3 Hodgkin's lymphoma - completely unrelated to his testicular cancer.
"Obviously, it had been in my body for some time, but it may not have been detected if not for those follow-up tests. So I guess you can say a kick in the privates saved my life.''
After extensive chemotherapy, Downey received the all clear in June 2009.
"It was a great relief, but there was also the realisation of the toll it had taken on myself and Laura,'' he said.
"There was also the fear that the treatment could have caused infertility.''
Fortunately, this has proven not to be the case, and the couple are now proud parents of four children - Levi (8), Ayiya (6), Micah (4) and Amelia (2).
"I feel very blessed.''
Downey is ambassador for the Otago Students Relay for Life, which began at 6pm yesterday and finishes at 6pm today in the clocktower precinct at the University of Otago campus.
He spoke at the relay opening, cut the ribbon and led the survivors' lap, as well as shared his story during the candlelight ceremony at midnight.
The former deputy head of Aquinas College student hall of residence, Downey has been involved in many Relay for Life events over the years, with a "posse'' of students.
Looking back over his cancer journey, Downey recalls having great support from friends and family, but feels his wife would have benefited from more support.
"And that will be my message at the Relay for Life - to care for the carers,'' he said.
