Lung Metastasis From Thyroid Carcinoma Showing a Pure Ground-Glass Nodule.

Ryuko, Tsuyoshi; Sano, Yoshifumi; Kitazawa, Riko; Otani, Shinji; Sakao, Nobuhiko; Mori, Yu · Ann Thorac Surg · 2022

case_report · Level V

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Abstract

We report a rare case of lung metastasis of thyroid carcinoma showing a pure ground-glass nodule in a 68-year-old man who underwent total thyroidectomy and lymph node dissection in 2004. We followed the nodule growth, found 5 years after the surgery in the right lower lobe, using computed tomography and observed a gradual enlargement to 8 mm in 11 years. Postoperative pathology and immunohistochemistry revealed that the tumor was a papillary carcinoma that metastasized from the thyroid. This report may help clinicians recognize pure ground-glass nodules as lung metastasis of thyroid carcinoma and avoid misdiagnosis as lung adenocarcinoma.

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