Presented is a case of advanced pulmonary adenocarcinoma and a thyroid tumour with calcification. EGFR gene mutation testing of the thyroid aspirate specimen revealed a G719A point mutation in exon 18 that was identical to that in the patient's known lung cancer. This case demonstrates the usefulness of liquid‐based cytology samples, which enable genetic testing leading to a conclusive diagnosis while preserving the cytological specimens.

中文翻译：

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EGFR G719A 突变肺腺癌的甲状腺转移：用液基细胞学标本进行基因确认

介绍的是一例晚期肺腺癌和伴有钙化的甲状腺肿瘤。甲状腺抽吸物标本的EGFR基因突变检测显示外显子 18 中的 G719A 点突变与患者已知肺癌中的相同。这个案例证明了基于液体的细胞学样本的有用性，它可以在保存细胞学样本的同时进行基因检测，从而得出结论性诊断。