(Source: Wikimedia Commons)
…to finish the sentence in the headline: But it was not the simple no-brainer that you might think.
Lung cancer is the biggest cancer killer of all, causing 160,000 American deaths a year. But should we use lung scans to screen longtime smokers en masse for it? That question has been vigorously debated of late in medical circles, as Medicare has weighed whether to pay for the scans.
This week, Medicare announced that it did indeed propose to cover annual low-dose CT scans for smokers and former smokers, ages 55 to 74, with a smoking history equivalent to a 30-year pack-a-day habit. (More details here.)
People say ‘You deserve this because you brought it on yourself, and thus, suffer the consequences.’
– Laurie Fenton Ambrose
The draft decision now gathers public comment for a month and will still need to be finalized, but cancer activists and some doctors are already hailing it as a victory. Laurie Fenton Ambrose, president of the Lung Cancer Alliance, which had helped lead the push for the coverage, predicted that the scans would save tens of thousands of lives.
So why has screening for lung cancer sparked such hot debate? Why did it even recently trigger a rare point-counterpoint duel in the pages of a major medical journal, JAMA Internal Medicine?
Well, first, the pendulum has been swinging lately towards greater skepticism about routine cancer screening, from mammograms to prostate tests.
At issue is the pivotal question of whether some forms of cancer screening do more harm than good, given that some of the tumors they pick up would never have caused any trouble. Routine blood tests for prostate cancer have fallen out of favor, for example, and the New England Journal of Medicine just published a cautionary tale from Korea about how mass ultrasound scans for thyroid cancer saved no lives.
So that’s the broader medical context. Then there’s the money. I recently heard a Medicare official say with pained realism at a public forum, “We can’t cover everything good.” Close to 5 million people on Medicare would be eligible for the screening, NPR reports, and the scans cost an estimated $241 each.
So at a time of greater emphasis on health costs and greater doubts about cancer screening, “We just found ourselves caught in that crossfire,” said Fenton Ambrose of the Lung Cancer Alliance.
With lung cancer, there’s also the question of special stigma. People say “You deserve this because you brought it on yourself, and thus, suffer the consequences,” Fenton Ambrose said. “It has always had that type of stigma, that even carried through in some of the public comments that came forth during the Medicare consideration.”
Dr. Chrisopher Lathan, a medical oncologist at the Dana-Farber Cancer Institute, similarly cited stigma as a source of “hesitation” on the coverage. “This is a cancer that’s heavily linked to a behavior,” he said. “The amount of data needed to convince everyone that this was a good screening tool — that hurdle was much higher. And also, we are in a more skeptical time, academically, when we look at screening. We know that screening is good, but it’s good in certain circumstances.”
Which circumstances, when it comes to lung scans? This is the moment for the Public Service Announcement that says, “Talk with your doctor.”
“At the end of the day, this is about the relationship between doctors and patients,” Fenton Ambrose said. And in particular, there are some gray areas that require discussion, she noted. What if, for example, you’re a bit younger, or smoked a bit less than the cut-off? Research is now under way on that “second tier” of potential scan subjects, she said. Continue reading