A new report has found the chances in New Zealand of surviving cancer are significantly improving, but there are stark inequalities in survival rates.
The Ministry of Health and Otago University have investigated survival in 21 different cancers for people diagnosed from 1991 to 2004, and followed up for possible death.
Professor Tony Blakely says averaged across all cancers, the death rate among those diagnosed has reduced by 26 percent every decade.
He says while that's something for health services to celebrate, it's not all good news.
"We've still got this 29 percent higher death rate from cancer once diagnosed in Maori compared to non-Maori, and we can't seem to budge that."
Tony Blakely says the inequality is a huge challenge for the health sector.