PMID- 29066051 OWN - NLM STAT- MEDLINE DCOM- 20190408 LR - 20190408 IS - 1938-0690 (Electronic) IS - 1525-7304 (Linking) VI - 19 IP - 2 DP - 2018 Mar TI - Impact of Pretreatment Interstitial Lung Disease on Radiation Pneumonitis and Survival in Patients Treated With Lung Stereotactic Body Radiation Therapy (SBRT). PG - e219-e226 LID - S1525-7304(17)30208-5 [pii] LID - 10.1016/j.cllc.2017.06.021 [doi] AB - INTRODUCTION: The purpose of this study was to determine the impact of interstitial lung disease (ILD) on radiation pneumonitis (RP) and overall survival (OS) in lung stereotactic body radiation therapy (SBRT). METHODS: Patients treated with lung SBRT from 2004 to 2015 were included. Pretreatment computed tomography scans were reviewed and classified for interstitial changes by thoracic radiologists using American Thoracic Society guidelines and Washko and Kazerooni scores. RP was scored prospectively using Common Terminology Criteria for Adverse Events, version 3.0. Pretreatment imaging characteristics, clinical variables, and dosimetry were assessed by univariate (UVA) and multivariate analysis (MVA). OS was assessed by the log-rank test, and the impact of ILD on OS was assessed by Cox regression. RESULTS: Of the 537 patients assessed, 39 had interstitial changes (13 usual interstitial pneumonia [UIP], 24 possible UIP, and 2 inconsistent with UIP). RP was significantly higher in patients with ILD than in patients without ILD (grade >/= 2, 20.5% vs. 5.8%; P < .01; grade >/= 3, 10.3% vs. 1.0%; P < .01). Two of 3 grade 5 RP had imaging features of ILD. On UVA, ILD, Washko score, lung parameters performance status, and dose were significant predictors of grade >/= 2 RP. On MVA, ILD (odds ratio, 5.81; 95% confidence interval, 2.28-14.83; P < .01) and mean lung dose (odds ratio, 1.40; 95% confidence interval, 1.14-1.71; P < .01) were predictors of RP. ILD did not significantly affect OS on UVA or MVA. Median survival was 27.4 months in the ILD cohort and 34.8 in the ILD-negative cohort (P = .17). DISCUSSION: ILD is a significant risk factor for RP in patients treated with lung SBRT. Computed tomography scans should be reviewed for evidence of ILD prior to SBRT. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Glick, Daniel AU - Glick D AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Lyen, Stephen AU - Lyen S AD - Joint Department of Medical Imaging, Toronto General Hospital, Toronto, ON, Canada. FAU - Kandel, Sonja AU - Kandel S AD - Joint Department of Medical Imaging, Toronto General Hospital, Toronto, ON, Canada. FAU - Shapera, Shane AU - Shapera S AD - Division of Respirology, Toronto General Hospital, Toronto, ON, Canada. FAU - Le, Lisa W AU - Le LW AD - Department of Biostatistics, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Lindsay, Patricia AU - Lindsay P AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Wong, Olive AU - Wong O AD - Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Bezjak, Andrea AU - Bezjak A AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Brade, Anthony AU - Brade A AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Cho, B C John AU - Cho BCJ AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Hope, Andrew AU - Hope A AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Sun, Alexander AU - Sun A AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. FAU - Giuliani, Meredith AU - Giuliani M AD - Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada; Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada. Electronic address: Meredith.Giuliani@rmp.uhn.ca. LA - eng PT - Journal Article DEP - 20170710 PL - United States TA - Clin Lung Cancer JT - Clinical lung cancer JID - 100893225 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Female MH - Follow-Up Studies MH - Humans MH - Lung/*physiology/radiation effects MH - *Lung Diseases, Interstitial MH - Lung Neoplasms/complications/*epidemiology/radiotherapy MH - Male MH - Middle Aged MH - Prospective Studies MH - Radiation Pneumonitis/*epidemiology/etiology/mortality MH - Radiosurgery/*adverse effects MH - Risk Factors MH - Survival Analysis MH - Tomography, X-Ray Computed OTO - NOTNLM OT - Early stage lung cancer OT - Interstitial pneumonia OT - Lung toxicity OT - Pulmonary fibrosis OT - SBRT EDAT- 2017/10/27 06:00 MHDA- 2019/04/09 06:00 CRDT- 2017/10/26 06:00 PHST- 2017/04/06 00:00 [received] PHST- 2017/06/29 00:00 [revised] PHST- 2017/06/30 00:00 [accepted] PHST- 2017/10/27 06:00 [pubmed] PHST- 2019/04/09 06:00 [medline] PHST- 2017/10/26 06:00 [entrez] AID - S1525-7304(17)30208-5 [pii] AID - 10.1016/j.cllc.2017.06.021 [doi] PST - ppublish SO - Clin Lung Cancer. 2018 Mar;19(2):e219-e226. doi: 10.1016/j.cllc.2017.06.021. Epub 2017 Jul 10.