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ORIGINAL ARTICLE
Year : 2020  |  Volume : 16  |  Issue : 3  |  Page : 565-568

Correlation of planning target volume with mucositis for head-and-neck cancer patients undergoing chemoradiation


Department of Radiation Oncology, MS Ramaiah Medical College and Hospital, Bengaluru, Karnataka, India

Correspondence Address:
Janaki Gururajachar Manur
Department of Radiation Oncology, MS Ramaiah Medical College and Hospital, Bengaluru, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jcrt.JCRT_511_19

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Context: Head-and-neck cancer patients undergoing chemoradiation. Aims: The aim of the study was to see if there is any correlation between the planning target volume (PTV) and mucositis. Settings and Design: This was a single-arm prospective study. Subjects and Methods: A total of forty head-and-neck cancer patients undergoing chemoradiation were assessed for mucositis at the 5th week. The grades of mucositis were correlated with PTVs of low risk (54 Gy) and high risk (60–66 Gy). Statistical Analysis Used: The data were analyzed using the statistical software, SPSS Inc. Release 2009, predictive analytics software statistics for windows version 20.0, Chicago. Log transformation was done as the data were skewed. Independent t-test was used to compare between the two grades of toxicity. P <0.01 was considered for statistical significance. Results: The mean PTVlow risk was 522cc (228–771) and PTVhigh risk was 254cc (20–780). Grade II mucositis was seen in 27 (67%) patients and Grade III in 11 (28%) patients. The mean PTVlow risk was higher for patients, who had Grade III compared to Grade II mucositis (571 vs. 517 cc, P = 0.052). Conclusions: The same was seen for PTVhigh risk(367 vs. 222 cc, P = 0.017). PTV is a better predictor of mucositis, and those patients with larger PTV require close monitoring and early intervention of mucositis.


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