title: [A Case of Minimal Thyroid Carcinoma Diagnosed by a Solitary Pulmonary Metastasis].
abstract: 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.
authors.affiliation: Dept. of Surgery, Okayama Rosai Hospital.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kawai
authors.forename: Ryoma
authors.initials: R
authors.lastname: Sugimoto
authors.forename: Norichika
authors.initials: N
authors.lastname: Iga
authors.forename: Hirokuni
authors.initials: H
authors.lastname: Ikeda
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Yoshida
authors.forename: Naohisa
authors.initials: N
authors.lastname: Waki
authors.forename: Masahiro
authors.initials: M
authors.lastname: Ishizaki
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Nishi
authors.forename: Kazuki
authors.initials: K
authors.lastname: Yamashita
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000000981:diagnostic imaging / Q000601:surgery; D002291:Carcinoma, Papillary; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary* / Q000601:surgery; D008207:Lymphatic Metastasis; D008297:Male; D011013:Pneumonectomy; D000072078:Positron Emission Tomography Computed Tomography; D011379:Prognosis; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery; D013965:Thyroidectomy