A key waiting times target for treating cancer patients was missed during the last three months of 2019.
The latest figures show 83.7% of patients waited longer than 62 days for treatment following an urgent cancer referral – below the target of 95%.
The last time Scotland met the 62-day standard was at the end of 2012.
Just three of Scotland’s 14 NHS boards met the target during the quarter ending December 2019 – Lanarkshire, Shetland and Tayside.
For the health boards that did not meet the standard, performance ranged from 72.4% in NHS Highland to 92.8% in NHS Borders.
Scottish Labour said the missed target shows a lack of resources in the NHS.
The party’s health spokeswoman Monica Lennon said: “It’s shocking and unacceptable that the Scottish Government has missed cancer treatment waiting times for seven years in a row.
“Successive SNP ministers have failed to properly resource the NHS, letting down patients and staff.
“Scottish Labour has repeatedly raised the concerns of patients and clinicians about the need for increased capacity in early detection and treatment.”
In response to the Covid-19 pandemic, the Scottish Government has paused certain cancer screening programmes to free up healthcare staff.
Health Secretary Jeane Freeman said core treatments such as urgent cancer surgery should be protected despite the outbreak.
“These are particularly difficult times and we understand that patients undergoing treatment for cancer will feel especially anxious,” she said.
“Our NHS boards are working hard to ensure vital cancer care remains and I have written to all health boards outlining my expectation that all vital cancer services continue.”
She added: “Many medical procedures do now carry a far greater risks due to Covid-19. Because of this, other treatment plans may be proposed and discussed with patients.
“Patient-facing guidance has been developed and distributed via cancer services across Scotland to provide advice for people with cancer about how Covid-19 might affect them.”
The 200,000 people living in Scotland who are most vulnerable to Covid-19 are also being offered extra support, such as food and medicine.