A case report of tongue metastasis from lung squamous cell carcinoma and literature review

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Tongue metastasis from lung cancer is extremely rare, and the prognosis of these patients is rather poor.

Patient concers:

A 56-year-old man was found a 4-cm cavity lesion in the left upper lobe, which was initially misdiagnosed as tuberculosis.


A case of lung squamous cell carcinoma that metastasized to the base of a patient's tongue.


We send the biopsy of the lung and the tongue lesions for gene sequencing.


He received systemic chemotherapy, but continued to have pain at the base of his tongue and died 7 months later.


From sequencing data, mutations in KRAS proto-oncogene, GTPase (KRAS), phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA), and tumor protein p53 (TP53) were found in the tumor biopsy of the patient. All of these were indicators of poor prognosis.

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