Significant relationships determined between KRAS exon 2 and mucinous morphology, PIK3CA and absence of perineural invasion, BRAF and tumor differentiation and localization, MSH3 and tumor diameter, and BRCA2 and absence of lymph node metastasis were findings that have contributed to the literature. The gene discussed is BRAF; the disease is metastatic malignant neoplasm in the lymph nodes.