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- Abstract 文献概要
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- 参考文献 Reference
肺多形癌は化学療法や放射線治療に対して抵抗性を示し,生物学的悪性度が非常に高い.また,皮膚・歯肉・後腹膜・筋肉・小腸など,通常は遠隔転移がまれな臓器への転移も報告されている.
We present a case of a 67-year-old woman who was pointed out a 1.8 cm nodule in the left inferior lobe by chest computed tomography (CT). Lung cancer was suspected and the surgery was scheduled. Before surgery, perioperative oral care was performed and gingival tumor doubtful of metastatic lesion was found. After the resection of the lung tumors, the diagnosis of pleomorphic carcinoma with pleural dissemination and gingival metastasis was established. Because high programmed cell death 1 ligand 1 (PD-L1) expression was demonstrated in the specimen of the lung, she was treated with pembrolizumab as an initial treatment, which led to a complete response. Twenty months after initiating of pembrolizumab therapy, she is doing well without recurrence of pleomorphic carcinoma.

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