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. 2024 Sep 2;24:1086. doi: 10.1186/s12885-024-12825-2

Fig. 3.

Fig. 3

Consensus atlas for cT3N1M0 lower thoracic esophagus cancer. GTVp/n represents the gross tumor volume of the primary tumor or pathological lymph nodes, with GTVp (shown in red) encompassing the primary tumor and expanded by 2.0 cm cranio-caudally and 0.5 cm radially along the esophageal wall to form the clinical target volume for the primary tumor (CTVp). GTVn (depicted in yellow) identifies pathological lymph nodes, expanded by 0.5 cm in paraoesophageal lymph node drainage areas to create CTVn. For the 106recR and celiac lymph nodes, CTVn includes a 1.0 cm cranio-caudal margin around the lymph node drainage area. The total clinical target volume (CTVtotal), illustrated in blue, aggregates CTVp and CTVn. Surrounding CTVtotal, the planning target volume (PTV) is visualized in green, marked by a uniform 0.5 cm expansion to ensure comprehensive coverage for radiation treatment planning