Screening high-risk populations for lung cancer saves lives. The National Lung Screening Trial (NLST) demonstrated a 20% relative reduction in lung cancer mortality with annual screening over 3 years with low-dose CT as compared with x-rays. The NELSON trial found a higher benefit: Men at high risk for lung cancer had a 26% reduced risk of dying from lung cancer and women had a 61% reduced risk over 10 years. However,
There are many reasons, but I submit that at least one hurdle is related to the difficulties associated with ordering the low-dose CT in the electronic medical record (EMR) and following the results. The rules and regulations around lung cancer screening are complex. First, the ordering provider must be able to determine if the patient is eligible for screening and has insurance coverage – a complicated procedure, which is constantly in flux, and is based on age, smoking history, smoke-free interval, and type of insurance coverage. Most EMRs do not have a way of flagging high-risk individuals, and clinic coordinators (for those practices that have one) are often put in charge of determining eligibility.
Dr. Joan H. Schiller
Secondly, the health care provider must order the scan. Unlike mammography, people must have a prescreening visit with a physician or other health care provider – a visit which is poorly compensated, and often must be supported by the institution. Many EMRs also do not have a smooth mechanism to make sure all the “boxes have been checked” before the scan can be ordered. Is there a complete smoking history? Has the patient had their prescreening visit? Has the patient been counseled regarding tobacco use? Has eligibility for insurance payment been confirmed?
Coordinating follow-up is cumbersome. Abnormal findings are common and usually nonmalignant, but must be followed up, and the follow-up recommendations are complicated and are based upon the appearance of the finding. This may be difficult for a general practitioner, so referrals to pulmonologists are often scheduled. Best practices state the patient be followed in a multidisciplinary pulmonary module clinic, but again, most multidisciplinary pulmonary module clinics are found in the academic setting.
All this involves a lot of back-and-forth for the patient: First to see their primary care physician, then to see a pulmonologist or other health care provider for the counseling regarding risks and benefits of screening and the importance of smoking cessation, and then a visit to a radiologist as well as a visit to a smoking cessation clinic, then a return follow-up visit. Academic medical centers and NCI-approved cancer centers often have these procedures worked out, but many private or smaller practices do not. Yes, the local IT folks can modify an EMR, but in a small practice, there are other “more important” problems that take precedence.
Would coupling lung cancer screening with breast cancer scanning help? One study followed 874 women who attended mammographic screening and found that over 11% were at high risk for lung cancer. This would appear to be an ideal “teaching moment” to educate the importance of lung cancer screening to women. It could also cut down on some of the logistical issues associated with lung cancer screening, particularly if a health care provider and coordinator were immediately available for counseling and eligibility determination at the time of the mammography visit. The radiology clinic staff could schedule a scan and return visit while the patient was still in the mammography suite.
Of course, the logistical hassle is just one of many associated with lung cancer screening. The internal stigma the patient may experience about their smoking history, the unconscious bias on the part of many health professionals, the many other screening and prevention regulations providers are now required to follow, the institution’s reluctance to support a screening program, the rushed pace in many clinics: These all certainly contribute to the problem. However, we have overcome all of these issues when it comes to mammography, such as work flow, stigma, logistical issues, seamless incorporation of ordering scans and referrals to specialists in the EMR, etc. We can and must do the same for our patients at high risk for lung cancer, and routine scheduling of mammograms and low-dose CTs may help.
Dr. Schiller is a medical oncologist and founding member of Oncologists United for Climate and Health. She is a former board member of the International Association for the Study of Lung Cancer and a current board member of the Lung Cancer Research Foundation. Ivy Elkins, cofounder of EGFR Resisters, a patient, survivor, and caregiver advocacy group, contributed to this article.