The differences in cancer survival between the U.S. and Europe are affected by a number of factors.
Availability of cancer screening appears greater in the U.S. for such tests as mammograms and Pap smears. It could be argued that many lesions picked up on such tests (and also prostate cancers discovered through PSA screening) are early-stage cancers or precancers and that if they’d gone undetected, a good number of them (i.e. low-grade prostatic adenocarcinomas and ductal carcinoma in situ of the breast) would not have progressed to deadly malignancies over the patient’s life span.
It gets more difficult to make the “overscreening” argument when it comes to carcinoma of the colon and rectum, where survival also is higher in the U.S. compared to Europe. And when survival is also significantly greater for cancers like melanoma, the idea that there are other systemic differences in care gains credence. From a Medscape article online (for some reason I can’t directly link to it but it comes up on a Google search):
*"August 22, 2007 — New reports from EUROCARE suggest that cancer care in Europe is improving and that the gaps between countries are narrowing. However, comparisons with US statistics suggest that cancer survival in Europe is still lagging behind the United States. The reports are published online August 21 in Lancet Oncology and scheduled for the September issue…
One of the reports compares the statistics from Europe with those from the United States and shows that for most solid tumors, survival rates were significantly higher in US patients than in European patients. This analysis, headed by Arduino Verdecchia, PhD, from the National Center for Epidemiology, Health Surveillance, and Promotion, in Rome, Italy, was based on the most recent data available. It involved about 6.7 million patients from 21 countries, who were diagnosed with cancer between 2000 and 2002.
The age-adjusted 5-year survival rates for all cancers combined was 47.3% for men and 55.8% for women, which is significantly lower than the estimates of 66.3% for men and 62.9% for women from the US Surveillance, Epidemiology, and End Results (SEER) program ( P < .001).
Survival was significantly higher in the United States for all solid tumors, except testicular, stomach, and soft-tissue cancer, the authors report. The greatest differences were seen in the major cancer sites: colon and rectum (56.2% in Europe vs 65.5% in the United States), breast (79.0% vs 90.1%), and prostate cancer (77.5% vs 99.3%), and this “probably represents differences in the timeliness of diagnosis,” they comment. That in turn stems from the more intensive screening for cancer carried out in the United States…The differences in survival are due to a variety of reasons, Dr. Verdecchia and colleagues write. They include factors related to cancer services — for example, organization, training, and skills of healthcare professionals; application of evidence-based guidelines; and investment in diagnostic and treatment facilities —as well as clinical factors, such as tumor stage and biology."*
Survival with cancer doesn’t just mean early diagnosis. It also encompasses timeliness of therapy and access to new drugs, where there are some differences between the U.S. and Europe.
A bit off the subject - you often hear that universal health care will save money because all the added cancer and other health screenings will pick up serious diseases earlier and we’ll be able to avoid radical surgeries and such. This will not happen. In the case of cancer screening, there will be tons of extra imaging studies and biopsies, all adding up to a vastly greater national health bill. We can avoid a fraction of this by smarter screening guidelines, but the bottom line is it’ll cost big bucks.
Jackmannii, M.D.