A Case of Minimal Thyroid Carcinoma Diagnosed by a Solitary Pulmonary Metastasis

Hiroshi Kawai, Ryoma Sugimoto, Norichika Iga, Hirokuni Ikeda, Ryosuke Yoshida, Naohisa Waki, Masahiro Ishizaki, Hideyuki Nishi, Kazuki Yamashita

Research output: Contribution to journalArticle


We report a case of minimal thyroid carcinoma diagnosed by a solitary pulmonary metastasis. A 70's man visited a medical practitioner because of chest discomfort, and there was an abnormality on the chest X-ray. Chest computed tomography(CT) showed a nodule in the right middle lobe of the lung. Positron emission tomography with 18-fluorodeoxyglucose(FDG)-PET revealed increased FDG uptake in that tumor, but did not reveal any other lesion. The tumor was clinically suspected to be a carcinoid tumor, primary lung cancer, metastatic lung cancer, or a benign tumor. Right middle lobe lobectomy was performed, and the tumor was diagnosed as a metastasis from a thyroid papillary carcinoma by pathological diagnosis during surgery. After surgery, we found a tumor in the left lobe of the thyroid by CT and US. Because the patient did not desire 131I therapy, he underwent a left hemithyroidectomy and neck dissection. There was a papillary carcinoma 1.0 cm in the thyroid gland and there were 3 cervical lymph node metastases. There has been no recurrence for 11 years after surgery.

Original languageEnglish
Pages (from-to)2127-2129
Number of pages3
JournalGan to kagaku ryoho. Cancer & chemotherapy
Issue number12
Publication statusPublished - Nov 1 2016
Externally publishedYes


ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Kawai, H., Sugimoto, R., Iga, N., Ikeda, H., Yoshida, R., Waki, N., Ishizaki, M., Nishi, H., & Yamashita, K. (2016). A Case of Minimal Thyroid Carcinoma Diagnosed by a Solitary Pulmonary Metastasis. Gan to kagaku ryoho. Cancer & chemotherapy, 43(12), 2127-2129.