Death rates categorized by ethnicity, age group, sex, cancer location, SRC histology, differentiation grade, adjacent structure invasion, LN, bone, liver, and lung involvement, resection, or radiotherapy were not significantly different across subgroups, while cases receiving chemotherapy had lower death rates than their counterparts within the first year of follow-up (6 months, 45% versus 76%; 12 months, 65% versus 79%). Here, SRC is linked to cancer.