AUTHOR=Nguyen Nam, Shen Wei, Kratz Sarah, Vock Jacqueline, Vos Paul, Vinh-Hung Vincent, Altdorfer Gabor, Ewell Lars, Jang Siyoung, Karlsson ULF, Godinez Juan, Mills Melissa, Sroka Thomas, Dutta Suresh, Chi Alexander TITLE=Feasibility of Tomotherapy-based image-guided radiotherapy for small cell lung cancer JOURNAL=Frontiers in Oncology VOLUME=3 YEAR=2013 URL=https://www.frontiersin.org/articles/10.3389/fonc.2013.00289 DOI=10.3389/fonc.2013.00289 ISSN=2234-943X ABSTRACT=Background: To assess the tolerance of patients with small cell lung cancer undergoing chemoradiation with tomotherapy-based image-guided radiotherapy (IGRT).Materials and Methods: A retrospective review of the toxicity profile for nine patients with small cell lung cancer of the limited stage who underwent chemoradiation delivered with helical tomotherapy (HT) has been conducted.Results: Acute grade 3–4 hematologic and esophagitis toxicities developed in two and three patients respectively. One patient developed a pulmonary embolism during radiotherapy. Seven patients had weight loss ranging from 0 to 30 pounds (median: 4 pounds). Three patients had treatment breaks ranging from 2 to 12 days. At a median follow-up of 11 months (range: 2–24 months), no patients developed any radiation related toxicities such as grade 3–4 pneumonitis or other long-term complications. The median survival was estimated to be 15 months. There were two local recurrences, three mediastinal recurrences, and six distant metastases.Conclusion: Grade 3–4 toxicities remained significant during chemoradiation when radiation was delivered with tomotherapy-based IGRT. However, the absence of grade 3–4 pneumonitis is promising and the use of HT needs to be investigated in future prospective studies.