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What Saku Koivu's Story Can Help Us Understand About Non-Hodgkin Lymphoma
The hockey captain was treated for non-Hodgkin lymphoma and returned to a legendary ovation. Here is what that cancer means, explained calmly.
A plain-language summary based on public reporting and trusted sources, linked below.
Please note: this page is educational only — it is not medical advice, and it does not speculate about anyone’s health beyond reliable public reporting. For questions about your own health, talk with your healthcare team.
What was announced, and when
Saku Koivu was captain of the Montreal Canadiens, the first European-born player to hold that role. In September 2001, aged 26, he was found to have cancer.
The first announcement, at a televised press conference, said only that he had a cancer of unknown origin. Doctors would not give more until further tests were done. Days later the club confirmed the diagnosis: intra-abdominal B-cell lymphoma, a non-Hodgkin lymphoma. He had begun chemotherapy. The Canadiens' communications director said Koivu had asked for privacy so he could concentrate on treatment.
The NHL Players' Association records what happened next. He missed nearly the whole regular season. He returned to the Canadiens' lineup on 9 April 2002, helping the team beat the Senators and take a playoff place. He then played in each of the club's 12 playoff games and scored 10 points, tying for the team lead.
Nothing else about his care was made public, and nothing here goes beyond those reports.
The gap between "cancer" and a diagnosis
The most instructive part of this story is the week when nobody knew what it was.
A mass in the abdomen can be many things. Early reports suggested pancreatic cancer. Identifying which cancer it was required tissue examined under a microscope, and stains and markers run on that tissue.
That delay is normal and it is not wasted time. "Lymphoma" and "pancreatic cancer" lead to entirely different treatments, so acting before the answer arrives would be worse than waiting for it.
What lymphoma is
The lymph system is part of the immune system. It carries a colorless fluid called lymph through thin vessels, filtering it through lymph nodes distributed around the body.
Lymph carries lymphocytes, a kind of white blood cell. NCI describes three types: B cells, which make antibodies; T cells, which help them; and natural killer cells, which attack infected and cancerous cells.
Non-Hodgkin lymphoma is cancer forming in the lymph system, and most types begin in B cells. Koivu's was described as a B-cell lymphoma. Our page on lymphoma covers how it differs from Hodgkin lymphoma.
Lymphoma is not confined to the neck and armpit. Lymph tissue exists throughout the abdomen, which is why a lymphoma can present as a mass there rather than as a swollen node someone can feel.
Indolent and aggressive
NCI's first division of non-Hodgkin lymphoma is not by stage. It is by speed.
Indolent lymphomas grow slowly. Some are watched rather than treated at first, an approach NCI lists as watchful waiting.
Aggressive lymphomas grow fast. Diffuse large B-cell lymphoma is the most common type of non-Hodgkin lymphoma overall, and it spreads quickly through lymph nodes and often into the spleen, liver or bone marrow.
The counterintuitive part is that aggressive does not mean worse in every sense. Fast-dividing cells are more vulnerable to chemotherapy, so aggressive lymphomas are treated hard and immediately with the aim of complete clearance. Slow lymphomas are more often managed over years.
NCI lists nine treatment types: radiation therapy, chemotherapy, immunotherapy, targeted therapy, plasmapheresis, watchful waiting, antibiotic therapy, surgery and stem cell transplant. Our page on chemotherapy explains what a course involves.
When to get checked
There is no screening test for lymphoma. NCI lists risk factors as older age, being male, and having a weakened immune system. It also lists the symptoms worth taking to a doctor:
- Swelling of lymph nodes in the neck, underarm, groin or abdomen.
- Fever with no known cause.
- Drenching night sweats.
- Feeling very tired.
- Weight loss with no known cause.
- Skin rash or itchy skin.
- Pain in the chest, abdomen or bones with no known cause.
Fever, drenching night sweats and weight loss occurring together have a name: B symptoms. They are recorded formally because they affect staging and treatment decisions.
"Drenching" is the operative word. Night sweats that soak bedding and require changing clothes are different from feeling warm, and that difference is worth describing precisely to a doctor.
A swollen node that persists beyond a few weeks, is painless, and keeps growing deserves attention, even though infection is a far more common explanation.
The numbers
The 79,320 new non-Hodgkin lymphomas and 19,970 deaths expected in the United States in 2026 are American Cancer Society projections carried on SEER's page. SEER's own measurements give five-year relative survival of 74.3% for 2016 to 2022 and a median age at diagnosis of 68.
By Ann Arbor stage, five-year relative survival is 87.6% for stage I, 79.7% for stage II, 74.0% for stage III and 63.6% for stage IV. Notice how flat that gradient is compared with solid tumors. Stage IV lymphoma is not the same proposition as stage IV lung cancer, because lymphoma is treated as a whole-body disease from the start.
These are population figures across dozens of distinct diseases and describe no individual. Our page on survivorship covers the follow-up that comes afterwards.
What this does not mean
A return to elite sport does not tell you what recovery looks like for anyone else. Koivu was 26, previously very fit, and treated at a major center.
Nor does his type describe most lymphoma. Non-Hodgkin lymphoma is a family of dozens of diseases, and the type determines almost everything about treatment.
One claim from the reporting at the time is worth flagging and setting aside. A Globe and Mail article quoted an unnamed oncologist estimating his odds of surviving a year at about 50-50. That was one anonymous clinician's guess about a stranger, based on published averages rather than his records. We do not repeat that kind of figure as if it described him, and no reader should treat a population statistic as a forecast for themselves either.
Sources
- The Globe and Mail, Koivu begins cancer treatment — https://www.theglobeandmail.com/life/health-and-fitness/koivu-begins-cancer-treatment/article763191/
- NHL Players' Association, Saku Koivu retires from NHL after 18 seasons — https://www.nhlpa.com/news/1-12502/saku-koivu-retires-from-nhl-after-18-seasons
- NCI PDQ, Adult Non-Hodgkin Lymphoma Treatment (Patient Version) — https://www.cancer.gov/types/lymphoma/patient/adult-nhl-treatment-pdq
- SEER Cancer Stat Facts, Non-Hodgkin Lymphoma — https://seer.cancer.gov/statfacts/html/nhl.html
How this article was prepared
An AI-assisted editorial system helped prepare this page. No named medical reviewer has reviewed it unless one is listed.
The National Cancer Information Foundation publishes Cancer Explained. This page is for learning. It is not medical advice and does not suggest a test or treatment.
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Put the story in context
Prevention, possible warning signs, screening, and diagnosis
This story relates to Non-Hodgkin lymphoma. The information below is general: it does not reveal anything else about a public person’s health, and not every point applies to every cancer. Personal advice depends on age, symptoms, family history, exposures, and medical history.
Prevention and risk reduction
Not every cancer can be prevented. Avoiding tobacco, protecting skin from ultraviolet radiation, limiting alcohol, staying active, and receiving recommended HPV or hepatitis B vaccination can lower the risk of certain cancers. A risk factor is not a prediction or a cause in one individual.
Symptoms and possible early signs
Possible signs vary and are often caused by conditions other than cancer. Changes worth discussing include a new lump, unexplained bleeding or weight loss, a persistent cough, lasting bowel or bladder changes, a changing skin spot, or symptoms that persist or worsen. Some early cancers cause no symptoms.
Screening and early detection
Screening looks for certain cancers before symptoms begin. Recommended tests exist only for some cancers and depend on age and risk. Screening can have benefits and harms; it is not the same as evaluating a new symptom, and there is no single routine scan or blood test that reliably screens for every cancer.
How cancer is diagnosed
Diagnosis may involve a history and exam, imaging, laboratory tests, and often a biopsy. Pathology can identify the cancer type and may test biomarkers that guide treatment. Symptoms, screening results, tumor markers, or online stories alone cannot confirm cancer.
Learn about this story’s cancer topic
A public story may encourage questions, but it should not be used to estimate your risk or choose testing. Contact a healthcare professional about a persistent or concerning change. Seek urgent care for severe or rapidly worsening symptoms.