KRAS and neoplasm: The sequencing result showed that both tumors harbored the common tumor mutations, KRAS (p.G12D), GNAS (p.R201H), and BRAF (p.R735Q), which indicated that the pulmonary tumor was a metastasis of LAMN.<h4>Conclusion</h4>This case is unusual in that the primary LAMN and the pulmonary metastasis are present at the time of diagnosis.