Figure 4: This column-graph shows the percentage of patients that underwent radiation therapy in each of the six chosen index large case-based series of Bansal et al. [8], Clayton Smith etal. [9], Garg et al. [10], Garg et al. [11], Nemani et al. [12], and Wright et al. [13]. Though in five of the six studies more patients did not have radiation therapy as part of their treatment regime, the difference is not significant. This is probably best explained by the remaining unanswered controversy that questions the improvement in survival rates associated with this modality of adjuvant therapy.