Clarification of the amount of SRC found in the biopsied tissue is said to be inaccurate to determine whether the tumor truly consists of 50% SRC or more.20 In addition, Patel et al.21 reported that mixed subtypes of adenocarcinoma, i.e. tumors consisting of a non-SRC component admixed with an SRC component, have inferior survival outcomes. Here, SRC is linked to neoplasm.