Format

Send to

Choose Destination
Cancer. 2016 Sep 1;122(17):2671-9. doi: 10.1002/cncr.30117. Epub 2016 May 31.

Impact of hypofractionated and standard fractionated chemoradiation before pancreatoduodenectomy for pancreatic ductal adenocarcinoma.

Author information

1
Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
2
Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
3
Department of Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
4
Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas.

Abstract

BACKGROUND:

Previous studies have suggested that preoperative chemoradiation (CRT) is associated with an improved margin-negative resection rate among patients who undergo pancreatoduodenectomy (PD) for pancreatic ductal adenocarcinoma (PDAC). However, the optimal preoperative regimen has not been established.

METHODS:

All patients with PDAC who received chemotherapy and/or CRT followed by PD between 1999 and 2014 were retrospectively reviewed. The effects of 2 external-beam radiation regimens-a standard course of 50.4 Gy in 28 fractions and a hypofractionated course of 30 Gy in 10 fractions-were compared. Differences in clinicopathologic characteristics, locoregional recurrence (LR), and overall survival (OS) were assessed.

RESULTS:

Among 472 patients who received preoperative therapy, 224 (47.5%) received 30 Gy, 221 (46.8%) received 50.4 Gy, and 27 (5.7%) received chemotherapy alone. Patients who received 50.4 Gy were more likely to have advanced-stage disease and to have received induction and postoperative chemotherapy, but there was no difference in the R1 margin status, treatment effect, LR, or OS between the 2 radiation groups (all P values > .05). Patients who received preoperative CRT had a lower rate of LR than patients who received preoperative chemotherapy alone (P < .01). In a multivariate Cox proportional hazards analysis, 50.4 Gy was associated with OS and LR similar to those associated with 30 Gy, whereas the absence of preoperative radiation was associated with a higher rate of LR (odds ratio, 2.21; 95% confidence interval, 1.04-4.70) and similar OS.

CONCLUSIONS:

Preoperative hypofractionated CRT was associated with similar local control and OS in comparison with standard CRT in patients undergoing PD for PDAC. The use of chemotherapy alone without CRT was associated with poorer local control but similar survival. Cancer 2016. © 2016 American Cancer Society. Cancer 2016;122:2671-2679. © 2016 American Cancer Society.

KEYWORDS:

FOLFIRINOX; chemoradiation; chemotherapy; gemcitabine; local recurrence; neoadjuvant therapy; pancreatectomy; pancreatic cancer; whipple

PMID:
27243381
PMCID:
PMC4992463
DOI:
10.1002/cncr.30117
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Wiley Icon for PubMed Central
Loading ...
Support Center