John, who found a swelling in his abdomen before he got tested, added: "I had no reason to get tested for prostate cancer again - and there were no real symptoms apart from a swelling. So it's very important for men to get themselves checked out.
"Men tend to think - oh, that's a problem, but it will go away. They shouldn't do that - prostate cancer can be treated, and cured."
Common symptoms include:
- needing to urinate more often, especially at night - for example if you often need to go again two hours after urinating
- difficulty starting to urinate
- straining or taking a long time to finish urinating
- a weak flow when you urinate
- a feeling that your bladder has not emptied properly
- needing to rush to the toilet - you may occasionally leak before you get there
- dribbling urine
- However, early on, there are often no problems with urination.
More top news
Hundreds of walkers have marched through Roundhay Park in Leeds today to raise money for Prostate Cancer UK.
Weekend weather update for the region
Nizhny Novgorod had a carnival atmosphere on Friday as Panama fans took over the centre.