Lymphopenia Is Associated with Gross Target Volumes and Fractions in Hepatocellular Carcinoma Patients Treated with External Beam Radiation Therapy and Also Indicates Worse Overall Survival

Figure 6

Survival curves according to independent prognostic factors. (a) Survival curves of patients in high and low lymphocyte nadir groups stratified by GTV ≤55.0 cc. The 1-year survival rate was 90.9% vs.77.7%; the 2-year survival rate was 88.5% vs. 53.0%; . (b) Stratified by GTV >55.0 cc (14.6 vs. 13.7; ). (c) Survival curve according to GTV groups (55.8 vs. 15.0 months; ). (d) Survival curves of patients in high and low lymphocyte nadir groups stratified by fraction number ≤16. 1-year survival rate was 84.1% vs. 81.5%; 2-year survival rate was 73.4% vs. 52.3%; . (e) Stratified by fraction number >16 (15.3 vs. 21.1 months; ). (f) Survival curve according to fraction number (55.8 vs. 15.4 months; ).

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