PMID- 25642416 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150202 LR - 20200930 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 4 DP - 2014 TI - Safety and Tolerability of SBRT after High-Dose External Beam Radiation to the Lung. PG - 376 LID - 10.3389/fonc.2014.00376 [doi] LID - 376 AB - PURPOSE: Stereotactic body radiotherapy (SBRT) is commonly used to treat unresectable lung nodules. Given its relative safety and effective local control, SBRT has also been used to treat recurrent lung nodules after high-dose external beam radiation (EBRT) to the lung. The toxicity of such treatment is unknown. METHODS AND MATERIALS: Between 2006 and 2012, 18 subjects at the Mayo Clinic with 27 recurrent lung nodules were treated with SBRT after receiving EBRT to the lung. Median local control, overall survival, and progression-free survival (PFS) were described. Acute toxicity and late toxicity (defined as toxicity >/= and >90 days, respectively) were reported and graded as per standardized CTCAE 4.0 criteria. RESULTS: The median age of patients treated was 68 years. Fifteen patients had recurrent lung cancer as their primary histology. Twelve patients received >/=60 Gy of conventional EBRT prior to SBRT. SBRT dose and fractionation varied; the most common prescriptions were 48 Gy/4, 54 Gy/3, and 50 Gy/5 fractions. Only four patients had SBRT planning target volumes (PTVs) that overlapped more than 50% of their prior EBRT PTV. Two patients developed local recurrence following SBRT. With a median follow up of 21.2 months, median SBRT-specific overall survival and PFS were 21.7 and 12.3 months, respectively. No grade >/=3 acute or late toxicities were noted. CONCLUSION: Stereotactic body radiotherapy may be a good salvage option for select patients with recurrent lung nodules following definitive EBRT to the chest. Toxicity is minimal and local control is excellent. FAU - Owen, Dawn AU - Owen D AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA ; Department of Radiation Oncology, University of Michigan , Ann Arbor, MI , USA. FAU - Olivier, Kenneth R AU - Olivier KR AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Song, Limin AU - Song L AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Mayo, Charles S AU - Mayo CS AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Miller, Robert C AU - Miller RC AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Nelson, Kathryn AU - Nelson K AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Bauer, Heather AU - Bauer H AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Brown, Paul D AU - Brown PD AD - MD Anderson Cancer Center , Houston, TX , USA. FAU - Park, Sean S AU - Park SS AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Ma, Daniel J AU - Ma DJ AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. FAU - Garces, Yolanda I AU - Garces YI AD - Department of Radiation Oncology, Mayo Clinic Rochester , Rochester, MN , USA. LA - eng PT - Journal Article DEP - 20150114 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC4294121 OTO - NOTNLM OT - acute OT - external beam radiotherapy OT - late toxicity OT - lung cancer OT - reirradiation OT - stereotactic body radiotherapy OT - toxicity tests EDAT- 2015/02/03 06:00 MHDA- 2015/02/03 06:01 PMCR- 2014/01/01 CRDT- 2015/02/03 06:00 PHST- 2014/09/12 00:00 [received] PHST- 2014/12/16 00:00 [accepted] PHST- 2015/02/03 06:00 [entrez] PHST- 2015/02/03 06:00 [pubmed] PHST- 2015/02/03 06:01 [medline] PHST- 2014/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2014.00376 [doi] PST - epublish SO - Front Oncol. 2015 Jan 14;4:376. doi: 10.3389/fonc.2014.00376. eCollection 2014.