Nodular metastatic lung tumor from thyroid carcinoma.

Pulmonary metastases from thyroid cancer usually present with a micronodular or miliary pattern throughout both lungs; pulmonary metastasis with nodules measuring 10 mm in diameter is very rare. We herein present a 74-year-old woman with a history of papillary thyroid cancer treated surgically 17 years previously who presented with pulmonary metastatic nodules measuring 15 mm in diameter on chest radiography. If a pulmonary nodule or nodules are encountered in a patient with a history of thyroid cancer, though very rare, the possibility that it is a metastasis must be borne in mind.