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Front Oncol. 2013 Nov 26;3:289. doi: 10.3389/fonc.2013.00289. eCollection 2013.

Feasibility of tomotherapy-based image-guided radiotherapy for small cell lung cancer.

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Department of Radiation Oncology, University of Arizona , Tucson, AZ , USA.



To assess the tolerance of patients with small cell lung cancer undergoing chemoradiation with tomotherapy-based image-guided radiotherapy (IGRT).


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.


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.


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.


IGRT; chemoradiation; limited stage; small cell lung cancer

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