A nationwide population-based cohort study of hospital academic status and survival following colorectal cancer surgery in Finland 1987–2016

Why Where You Have Surgery Might Matter

When someone is told they need an operation for bowel cancer, they rarely get to choose much beyond a date and a hospital. Yet an important question quietly hangs in the air: does it matter whether that hospital is a big university center or a smaller community facility? This Finnish study followed tens of thousands of people who had surgery for colon or rectal cancer over three decades to see whether the type of hospital was linked to their chances of being alive years later. Its findings offer a nuanced answer that is especially relevant as many countries debate whether complex cancer care should be centralized.

A Nationwide Look at Bowel Cancer Surgery

Finland offers an unusually clear window into this question because every resident has a unique identity number and all cancers and hospital stays are logged in national registries. The researchers pulled records for all people diagnosed with colorectal (bowel) cancer from 1987 to 2016 who had part of their bowel removed within a year of diagnosis. That produced a remarkably large group: 49,032 patients. They then sorted the hospitals into two categories. Five large medical centers linked to universities counted as academic hospitals; every other hospital was considered non-academic. About one third of the patients were operated on in academic centers and two thirds in non-academic ones.

Balancing the Scales Between Patients

Simply comparing death rates between hospital types would be misleading, because the mix of patients and cancers is not the same everywhere. The team therefore used standard statistical methods to level the playing field. They took into account patients’ ages, sex, and other illnesses, how advanced the cancer was, whether it was in the colon or rectum, if they had treatments such as chemotherapy or radiation before surgery, and the time period when they were treated. They also examined how busy each hospital was with bowel cancer surgery, since high-volume centers might build greater expertise over time.

What the Numbers Say About Survival

Overall, people who had colorectal cancer surgery in non-academic hospitals were somewhat more likely to die within five years than those treated in academic centers. After accounting for differences in patients and cancer features, the risk of death from any cause within five years was about 7 percent higher in non-academic hospitals. Death in the first month or three months after surgery showed a similar pattern, though these differences shrank once patient factors were considered. When the researchers added hospital workload into the analysis, the contrast became stronger: lower-volume, non-academic hospitals had clearly worse five-year survival than high-volume academic centers.

A Tale of Two Cancers: Colon Versus Rectum

The story changed when the team separated colon cancer from rectal cancer. For colon cancer, once age, stage, other illnesses, and treatments were taken into account, survival was very similar regardless of hospital type. In contrast, for rectal cancer the gap persisted. Patients with rectal cancer treated in non-academic hospitals had higher chances of dying within 30 days, 90 days, and within five years, both from any cause and specifically from their cancer. These differences became less pronounced when the analysis included only patients who were believed to be treated with curative intent, but the overall pattern suggested a real advantage for university centers in rectal cancer care.

What This Means for Patients and Health Systems

Rectal cancer surgery is technically demanding and carries a higher risk of complications than most colon operations. Academic hospitals are more likely to have surgeons who specialize in these procedures, teams that regularly review complex cases together, and resources to manage serious complications when they arise. The Finnish results suggest that these advantages translate into better survival for people with rectal cancer, while for colon cancer, careful surgery and follow-up can be delivered safely in many hospitals. For policy makers, the message is that centralizing the most complex bowel cancer operations, especially rectal cancer, to experienced academic centers may save lives, but moving all colon cancer surgery may offer only modest gains. For patients, the study reinforces a simple point: asking about a hospital’s experience with your specific type of cancer is a reasonable and potentially life-saving question.

Citation: Sarjanoja, E., Klintrup, K., Ohtonen, P. et al. A nationwide population-based cohort study of hospital academic status and survival following colorectal cancer surgery in Finland 1987–2016. Sci Rep 16, 9478 (2026). https://doi.org/10.1038/s41598-026-38347-4

Keywords: colorectal cancer surgery, hospital type, rectal cancer, patient survival, Finland