28年前に切除された濾胞性甲状腺癌からの孤立性肺転移が早期肺癌と共存していた

[Solitary Pulmonary Metastasis from Follicular Thyroid Carcinoma Resected 28 Years Earlier Coexisting with Early Lung Cancer;Report of a Case].

• Takahiro Okabayashi
• Toshio Nishikawa
• Masahiko Takahashi
• Masanobu Mori
• Yasuaki Kamikawa
• Humiyuki Inoue

抄録

71歳の女性がマススクリーニング胸部X線検査で右下肺野に円形の腫瘤陰影を認めて当院を受診した．胸部CT検査では右肺下葉に直径2.2cmの明瞭な小結節性腫瘤影が、左肺上葉にはグランドグラスオパシティ（GGO）が認められた。彼女は肺の右下葉のビデオ支援部分切除を受けた。病理検査の結果、濾胞性甲状腺癌の肺転移を指摘された。3ヵ月後に左肺上葉のビデオ支援部分切除術を施行した。顕微鏡的に2病変の腺癌in situが明らかになった。

A 71-year-old woman was referred to our hospital for a round mass shadow in the right lower lung field in mass screening chest X-ray. Computed tomography (CT) of the chest showed a well-defined lobulating mass shadow measuring 2.2 cm in diameter in the lower lobe of the right lung and a ground glass opacity ( GGO) in the upper lobe of the left lung. She underwent video-assisted partial resection of right lower lobe of the lung. The pathological examinations indicated a pulmonary metastasis of follicular thyroid carcinoma. Three months later, video-assisted partial resection of left upper lobe of the lung was performed. Microscopically, 2 lesions of adenocarcinoma in situ were revealed.