Margin-positive surgery still beneficial in pancreatic cance
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For patients with stage II pancreatic cancer, attempted surgery with margin-positive resection may offer survival benefits over chemotherapy alone, according to a study published in the Journal of the American College of Surgeons.

Researchers identified patients receiving surgery from 2010 to 2017 for stage II pancreatic cancers who had R1/R2 resection outcomes, with or without neoadjuvant chemotherapy, and compared their survival to that of patients with similarly staged disease who received chemotherapy alone. Data were included for 11,699 stage II pancreatic cancer patients: 81.4, 15.7, and 2.9 percent received chemotherapy alone, upfront surgery, and neoadjuvant therapy with surgery, respectively.

--The researchers found that compared with the upfront surgery group and chemotherapy alone group, R1/R2 neoadjuvant patients had the best overall survival at a mean of 19.75 months versus 17.77 and 10.12 months, respectively.

--Compared with patients who underwent chemotherapy alone, survival was better in surgical patients even with R2 resection, although the difference was not statistically significant.

--Although survival rates were significantly lower for R1/R2 resections than standard R0 resections, R1/R2 resections improved survival if patients received neoadjuvant/adjuvant chemotherapy.

"Even in the era of modern chemotherapy, margin positive resection, including R1 and R2 resections, still offer survival benefit," the authors write. "This is critical since, in the setting of neoadjuvant therapy, response to treatment can be difficult to determine and surgical exploration and resection are necessary to fully assess resectability."

Source: https://doi.org/10.1016/j.jamcollsurg.2021.02.020
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