Most people hope that if they ever develop cancer, it will be found during a routine check-up or a screening test before serious symptoms appear.
Detecting cancer early usually gives doctors more treatment options and often improves the chances of survival. Unfortunately, this is not the reality for many older adults.
A large new study suggests that a surprising number of cancers are first discovered only after a person becomes so unwell that they need emergency medical care. These patients face a much poorer outlook than those whose cancer is diagnosed through normal healthcare visits.
The research was led by scientists at the University of North Carolina and published in the Journal of the National Cancer Institute. The investigators wanted to understand whether the way cancer is first diagnosed has an effect on survival, particularly among older adults covered by Medicare.
To answer this question, the researchers analyzed medical information from nearly 930,000 Medicare patients who were diagnosed with one of 16 common cancers between 2008 and 2017. Because of its enormous size, the study provides one of the clearest pictures yet of how emergency cancer diagnoses affect patients across the United States.
The researchers discovered that about 28% of these patients first learned they had cancer after visiting an emergency department. This means that more than one in four older adults received their diagnosis during or immediately after an urgent medical event rather than through planned medical care.
The team separated these patients into two groups. One group was admitted to hospital directly from the emergency department because they were seriously ill. The second group was stable enough to go home and complete further tests before starting treatment.
The differences between these groups were remarkable. Among people whose cancer was diagnosed through routine outpatient care, about 81% were still alive one year later. Survival was much lower for patients diagnosed after an emergency visit.
Only about 60% of those sent home for further testing were alive after one year, while survival dropped to just 36% among patients who needed immediate hospital admission.
At first glance, these results might seem easy to explain because people arriving at an emergency department are often sicker. However, the researchers carefully adjusted their analysis to account for age, cancer stage, other illnesses, and overall frailty.
Even after considering all of these important factors, patients diagnosed through an emergency presentation still had a significantly higher risk of dying during the following year.
The findings suggest that an emergency diagnosis reflects more than simply having advanced cancer. It may also point to delays in recognizing symptoms, difficulties obtaining timely testing, or problems moving patients quickly through the healthcare system after cancer is suspected.
One of the study’s most interesting discoveries involved patients who were discharged from the emergency department instead of being admitted. These individuals had visited primary care doctors about as often as people whose cancers were diagnosed through normal outpatient care.
This means they were not simply avoiding medical attention. Instead, the researchers believe there may have been missed opportunities to identify their cancers before an emergency developed.
The pattern was seen across many different cancers, including breast, prostate, bladder, and several blood cancers that are often considered treatable when diagnosed early. This suggests that emergency diagnosis is a widespread issue rather than one limited to only the most aggressive cancers.
The researchers believe hospitals and healthcare systems can use this information to improve patient care. People whose cancers are first identified in the emergency department may benefit from faster referrals to cancer specialists, better coordination of follow-up appointments, and earlier discussions about treatment goals and supportive care.
Emergency departments are designed to treat urgent illness, but they are not structured to manage the complicated process of diagnosing and treating cancer. Without clear referral pathways, some patients may experience unnecessary delays.
Improving public awareness of possible cancer symptoms, increasing access to primary care, and reducing waiting times for important diagnostic tests may also help reduce the number of emergency cancer diagnoses in the future.
This study has several important strengths, including its exceptionally large sample size and its use of real-world national data collected over many years.
However, because it was an observational study, it cannot prove that being diagnosed in the emergency department directly causes poorer survival. Instead, emergency diagnosis is likely to be a marker of several underlying problems that together increase the risk of death.
Overall, the findings send a clear message. How cancer is first discovered provides valuable information about a patient’s future outlook.
Earlier diagnosis, quicker investigations, and better coordination between emergency departments, primary care doctors, and cancer specialists may help more patients receive treatment before their disease reaches a crisis point, ultimately improving survival and quality of life.
If you care about cancer, please read studies that a low-carb diet could increase overall cancer risk, and vitamin D supplements could strongly reduce cancer death.
For more health information, please see recent studies about how drinking milk affects the risks of heart disease and cancer and results showing higher intake of dairy foods linked to higher prostate cancer risk.
Source: University of North Carolina.
