In fact, out of the 4545 bladder cancer patients included in the study, only one received the comprehensive care recommended by the American Urology Association and the National Comprehensive Cancer Network.
Receiving the recommended comprehensive care for high-grade bladder cancer is critical because it can significantly minimise the likelihood that patients will die from their cancer, said Dr. Karim Chamie, a UCLA postdoctoral fellow in urologic oncology and health services research and lead author of the study.
"We were surprised by the findings in this study, particularly in an era when many suggest that doctors over-treat patients and do too much in the name of practicing defensive medicine," Chamie said. "This study suggests quite the contrary that we don't do enough for patients with bladder cancer. If this was a report card on bladder cancer care in America, I'd say we're earning a failing grade."
The study appears July 11 in the early online edition of the peer-reviewed journal Cancer, a publication of the American Cancer Society.
The study also investigated the cause of such poor compliance. What researchers found was that non-compliance knew no boundaries and that patient-level factors such as age, race, ethnicity or socioeconomic status had very little impact. Instead, non-compliance with guideline-recommended care was primarily attributed to urologists. The patients in the study were elderly but capable of withstanding the simple recommended measures, the researchers said.
"It wasn't their age, race, ZIP code or how wealthy they were. It all came down to who their doctor was," Chamie said.
Dr. Mark S. Litwin, a UCLA professor of urology and public health and senior author of the study, said it's not clear why physicians are not routinely following established guidelines for care.
"It is puzzling, because strong evidence supports those guidelines," Litwin said. "But this is a wakeup call to all physicians caring for patients with bladder cancer. We know definitively what constitutes high-quality care. Now we just need to make sure it happens."
Patients with primary high-grade bladder cancer, which has not yet invaded the muscle of the bladder, have a 50 to 70% chance of their cancer coming back in the bladder following treatment. They also have a 30 to 50% chance of the cancer becoming more aggressive and invading the muscle, where it is much harder to treat. Once the cancer invades the muscle, the bladder and surrounding organs must be removed, and both the quality and the length of the patient's life are significantly impacted, Chamie said.
Chamie said that, at diagnosis, about 75% of bladder patients have cancer that has not invaded the muscle. So treating those patients with the guideline-recommended care to help minimise recurrences and prevent invasion of the tumour into the muscle could help a large number of them.
The recommended medical guidelines call for injecting a cancer-killing drug directly into the bladder to minimise recurrence and progression. They also advise an intense follow-up schedule, including the repeated use of a scope to evaluate the bladder from the inside, a procedure called cystoscopy, and a urine test that is similar to a pap smear every three months to check for abnormal cells.
Only one patient in the study, which analysed date from Surveillance, Epidemiology and End Results (SEER) Medicare-linked database, was given the recommended care. The study also found that nearly half the urologists treating these patients hadn't performed at least one cystoscopy, one urine test and one infusion of the cancer-killing drug into the bladder.
To rectify the situation, Chamie and Litwin suggest a quality-improvement initiative and/or changes to physician reimbursements. To complicate matters, despite the poor compliance rate, bladder cancer is the most expensive malignancy to treat on a per-patient level. While improving compliance by instituting changes to physician reimbursement or by a quality-improvement initiative will increase health care costs in the short term, preventing recurrences or progression of the cancer likely will cut costs in the long term.
"We have to improve compliance, and there are two ways to do that: Modify our reimbursement schedules to provide incentives to doctors to follow the guidelines, or go out and interact and educate the community urologists, who are delivering the vast majority of bladder cancer care, on the importance of providing compliant care," Chamie said. "Unlike some patients diagnosed with bladder cancer after having it spread to other sites, when it's too late to treat effectively, or those with low-grade tumours that are not likely to ever be aggressive, this is a potentially curable cohort of patients. If we don't do a good enough job treating these cancers, we're going to lose these patients."
This year alone, more than 70 000 Americans will be diagnosed with bladder cancer. Of those, 15 000 will die.
The study was funded in part by the Ruth L. Kirschstein National Research Service Award, the American Cancer Society, a Jonsson Cancer Centre Foundation seed grant and the National Institute of Diabetes and Digestive and Kidney Diseases.
Source: UCLA
