Showing posts with label california medical association. Show all posts
Showing posts with label california medical association. Show all posts

Wednesday, September 21, 2011

The Golden State's Dense Breast Tissue Bill: An Argument In Favor

Today I'll continue the discussion on California's dense breast tissue bill, SB 791, sponsored by Joe Simitian of Latest Medical's hometown of Palo Alto. The bill is similar to bills recently passed in Connecticut and Texas. Basically, it would require physicians to notify patients with highly dense breasts about their breast density and the possibility that they may require additional imaging services like ultrasound or MRI. The California Medical Association (CMA) and many physicians oppose the bill. Patients and patient advocates tend to support it. 
As the founder of a company focused on empowering cancer patients with information, I support the bill. To me, nothing justifies withholding potentially life-saving information from patients.
The simple, central issue is that today most women are not being informed about a serious health risk: dense breast tissue. According to a recent poll, 95 percent of women ages 40+ don’t know their breast density and close to 90 percent don’t know it increases the risk of developing breast cancer.  Yet the medical community has known about this issue for over a decade.
What are the arguments against the bill? I’ll use the CMA as a proxy for the opposition. In their press release, the CMA states that there isn't yet clarity on what "dense breasts" means, nor on what should be done clinically with the information. But "clarity" is a vague term. In fact, there's well over a decade of research about the risks associated with dense breast tissue and on the value of supplemental screening. It’s common sense that imaging the breast using different, proven methods will increase the likelihood of finding an abnormality. But we don't have to rely on common sense. Recent studies published in high quality medical journals come to the same conclusion.
In fact, as an argument against the bill, the CMA's press release says that breast density is already reported to physicians in mammography reports. Isn't this an admission that there is a workable way to measure breast density and that the information has clinical relevance?
One can concede that the measurement of breast density is an ongoing area of research. And one can concede that the value of different supplemental screening methods is still being quantified. The CMA's policy statement says that, "the science is still out on this matter." Yes, science is never finished. It's always still out on every matter.
Another CMA argument cites the bill's impact on patients (they'll be scared) and physicians (they'll face practical and legal problems). Possibly.  But these are secondary issues--consequences of communicating the facts. The truth can't be sacrificed for the sake of convenience. The priority must be patients' health, not shielding them from worry or protecting physicians.
Finally, one can argue that what's needed is better cost-benefit data regarding supplemental screening of women with dense breast tissue. But the bill doesn't involve changes to reimbursement. Maybe it should. But right now it's only about communicating information. Once they're informed, women can do their own cost-benefit analysis with their doctor. They can weigh in their other risk factors, their anxiety level about developing breast cancer, their level of concern about a possible unnecessary biopsy, and their ability to pay for supplemental screening if it isn't covered. This is a decision that women need to have the opportunity to make. The bill ensures that they will.
Without the notice that the bill requires, we know that many women with very dense breasts who aren't aware of this issue will be at risk while we wait years for the results of more definitive randomized controlled trials. SB 971 is important for the simple reason that people have the right to make decisions about their health based on the best available information.
Tomorrow I'll go into what I view as another reason why it's important to empower patients with this kind of information.

Tuesday, September 13, 2011

The Golden State's Dense Breast Tissue Bill: First, Some Facts

Yesterday, SB 791 (California's dense breast tissue bill) passed the State Legislature and will now go to Governor Jerry Brown (1). The bill is sponsored by State Senator Joe Simitian (D-Palo Alto). It's similar to bills passed in Connecticut and, more recently, Texas.

This bill is extremely important in and of itself.  But I also find the fight around the bill really interesting. It highlights some not-so-flattering aspects of our nation's healthcare system as well as the extreme importance of being a well informed, proactive patient in the era of more personalized cancer care.

More on that tomorrow.  First, today, let's lay a foundation and focus on the basic facts of the case.

The bill: SB 791 would require that, following a mammogram, women with dense breast tissue be informed by the radiology lab that: 1) they do, in fact, have dense breast tissue, 2) that dense breast tissue makes mammography a less effective screening method, and 3) that they may want to discuss the value of additional screening with their doctor.

What is dense breast tissue? It is not a disease or condition. Women's breasts differ with regard to their fat content. Breasts composed of less fat and more glandular and connective tissue are denser.  Denser tissue shows up darker (whiter) on a mammogram, potentially obscuring abnormalities that could be cancer, which also appear white.  Here's a good link if you want to see this.  A mammogram result will include a score for breast tissue density of between 1 ("almost entirely fatty") to 4 ("extremely dense tissue present").

How much less effective is mammography in women with very dense breast tissue?  An often cited 2002 study of 11,000 women out of Columbia-Presbyterian Medical Center in NYC found that while mammography detected 98% of cancer in women with fatty breasts, it found only 48% in women with the densest breasts (2). There are plenty more studies on this.

But there's another troubling aspect to dense breast tissue. It doesn't just hide tumors, it's also a strong risk factor for breast cancer. In fact, it seems that having very dense breasts is a stronger risk factor than family history. So it's a double-whammy.

The association between breast density and increased breast cancer risk was actually first reported over 30 years ago. Since then there have been many confirming studies. The best estimate is that breast density in the highest quartile represents a 4-6 times higher risk of breast cancer. That means that the 25% of women with the densest breasts have about a five times higher than average risk of getting breast cancer. The paper I'm citing comes out of Germany and was published in 2009 (3).  It also states that this magnitude of risk "is only topped by age and BRCA1/2 mutation."

Despite all this, a 2010 Harris Interactive poll found that 95% of women don't know their breast density. And 90% don't know that it substantially increases cancer risk. (Sorry, can only find secondary references to thee poll.)  It seems clear that there's a communication problem here. And that's what SB 791 is trying to correct.

So why is the mighty California Medical Association (and several other big medical organizations) opposing the bill?  They explain their position in a press release from June 2011. But I find the CMA's position and arguments unconvincing.

I also think that the communication problem that gave rise to the legislation is due to larger shortcomings of our healthcare system. Women with dense breast tissue should be cognizant of these shortcomings. And so should breast cancer patients as they navigate different aspects of their treatment in the emerging era of personalized medicine.

I'll write about that tomorrow. After that, I'll highlight some newer screening technologies featured on our main website that might be able to make a real difference for women with dense breasts.



(1)  "Governor Jerry Brown...whose aura smiles and never frowns." Couldn't resist. Any time I hear the governor's name those words flow automatically. Evidence of a misspent youth. Be the first to post the reference as a comment and I'll send you a token $5 Starbuck's card.

(2)  Radiology. 2002 Oct;225(1):165-75. (PubMed ID 12355001)

(3)  Breast Care (Basel). 2009;4(2):89-92. Epub 2009 Apr 24.(PubMed ID 20847885)