2022 World Conference on Lung Cancer (ePosters)-EP05.01-020. Unanticipated Radiation Re-planning for Stage III Non-small Cell Lung Cancer

EP05.01-020. Unanticipated Radiation Re-planning for Stage III Non-small Cell Lung Cancer

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Summary:<br /><br />This study examined the factors associated with unplanned radiation therapy re-planning in stage III non-small cell lung cancer patients. The study analyzed data from 144 patients treated with radical intent radiation therapy. It was found that 18% of patients required re-planning, with the most common reason being volume changes on cone beam computed tomography. Patients with a larger superior-inferior dimension of the planning target volume (PTV) and larger PTV were more likely to require re-planning. The overall survival rate for these patients was 36.3 months. The cumulative incidence of local recurrence, regional recurrence, and distant recurrence at 2 years were 18%, 19%, and 38% respectively. The study concluded that a larger PTV is a predictive factor for re-planning in stage III NSCLC. The survival and recurrence outcomes for these patients were similar to those reported in the literature.

Asset Subtitle

Melinda Mushonga

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Speaker Melinda Mushonga

Topic Locally Advanced Non-small Cell Lung Cancer - Chemoradiotherapy and Radiotherapy

Keywords

unplanned radiation therapy re-planning

stage III non-small cell lung cancer

radical intent radiation therapy

cone beam computed tomography

planning target volume

superior-inferior dimension

overall survival rate

local recurrence

regional recurrence

distant recurrence