SAN DIEGO – Delaying
“There is significant upstaging with time from completion of clinical staging to surgical resection, with a 4% increase of upstaging per week for the overall study population,” said study coauthor Harmik J. Soukiasian, MD, FACS, of Cedars-Sinai Medical Center, Los Angeles, in an interview. “Upstaging impacts lung cancer prognosis as more advanced stages portend to a poorer prognosis.”
Dr. Harmik Soukiasian
An estimated 80%-85% of lung cancer patients have NSCLC, according to the American Cancer Society, and Dr. Soukiasian said surgery offers a chance at a cure for those diagnosed at stage I.
“National Cancer Comprehensive Network (NCCN) Guidelines recommend surgery within 8 weeks of completed clinical staging for NSCLC to limit cancer progression or upstaging,” Dr. Soukiasian said. “Although these guidelines are well established and widely adopted, our study performs a more granular analysis, studying time as a predictor of upstaging for those patients diagnosed with stage I NSCLC.”
For the new study, Dr. Soukiasian and colleagues tracked 52,406 patients in a cancer database who had stage I NSCLC but had not undergone preoperative chemotherapy. The researchers tracked their clinical stages for up to 12 weeks from initial staging.
Researchers found that, while staging levels rose with each successive week, just 25% of patients underwent surgery by 1 week, and only 79% had surgery in accordance with NSCLC guidelines by week 8. At 12 weeks, 9% had still not undergone surgery.