Upstaging was common: 22% at 1 week, 32% after 8 weeks, and 33% after 12 weeks.
“We demonstrate that patients diagnosed with stage I NSCLC benefit from surgery sooner than the 8-week window recommended by the NCCN guidelines,” Dr. Soukiasian said. “Exclusive of the rate of progression and in addition to time to surgery, our study also demonstrated academic centers, higher lymph node yield during surgery, and left-sided tumors to be independent predictors of upstaging.”
The study design doesn’t provide insight into why surgery is often delayed. However, “we can theorize factors associated with delays to surgery may be due to patient factors (personal scheduling, availability of support systems, etc.), delays in follow up, operating room availability or scheduling, and issues with insurance approval,” Dr. Soukiasian said.
In his presentation, Dr. Soukiasian emphasized the role of the mediastinum. “Given the clinical impact of stage III disease, we analyzed upstaging rates of stage I NSCLC to stage IIIA and revealed a 1.3% increase per week of upstaging specifically to stage IIIA. Additionally, almost 5% of patients initially diagnosed with stage I NSCLC upstaged to IIIA disease. The significant rate of upstaging to IIIA disease makes the case for more accurate and aggressive mediastinal staging prior to surgical resection.”
No disclosures and no study funding are reported.
SOURCE: Soukiasian HJ et al. AATS 2018, Abstract 67.