Comparable Clinical Outcome Using Small or Large Gross Tumor Volume-to-Clinical Target Volume Margin Expansion in Neoadjuvant Chemoradiotherapy for Esophageal Squamous Cell Carcinoma

<div>Examples of target delineation of small margin (SM) and large margin (LM) groups. Red, yellow, and cyan lines indicate gross tumor volume (GTV), clinical target volume (CTV), and planning target volume (PTV), respectively. (a) Sagittal and (b) axial cuts from the representative case of the SM group illustrating target delineation with longitudinal primary GTV-to-CTV of 2 cm and no additional elective field for the longitudinal direction. (c) Sagittal and (d) axial cuts of representative case from the LM group illustrating target delineation with more extensive CTV, especially in the longitudinal direction.</div>

Journal of Oncology

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Figure 1: Comparable Clinical Outcome Using Small or Large Gross Tumor Volume-to-Clinical Target Volume Margin Expansion in Neoadjuvant Chemoradiotherapy for Esophageal Squamous Cell Carcinoma 

Figure 1 | Comparable Clinical Outcome Using Small or Large Gross Tumor Volume-to-Clinical Target Volume Margin Expansion in Neoadjuvant Chemoradiotherapy for Esophageal Squamous Cell Carcinoma 