Tadafumi Shimizu1, Takaaki Oba1, Tatsunori Chino1, Ai Soma1, Mayu Ono1, Tokiko Ito1, Toshiharu Kanai1, Kazuma Maeno1, Yoshinori Sato2, Takeshi Uehara2, Ken-Ichi Ito3. 1. Division of Breast and Endocrine Surgery, Department of Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan. 2. Division of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan. 3. Division of Breast and Endocrine Surgery, Department of Surgery, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan. kenito@shinshu-u.ac.jp.
Abstract
BACKGROUND: Distant metastasis from papillary thyroid microcarcinoma (PTMC) is rare. Here we report a case of PTMC with multiple lung metastases. CASE PRESENTATION: A 64-year-old man presented to our hospital with abdominal pain. Computed tomography incidentally revealed multiple lung nodules. The lung tumor was histologically diagnosed as metastasis of papillary thyroid carcinoma (PTC) by core needle biopsy via thoracoscopy. The patient was referred to our department for further examination. Neck ultrasonography revealed a 0.9 cm hypoechoic nodule in the right lobe of the thyroid gland, which was diagnosed as PTC by fine-needle aspiration cytology. Subsequently, total thyroidectomy was performed, followed by radioiodine therapy. Iodine-131 (131-I) scintigraphy showed a strong accumulation in the lung metastasis. The patient presented no evidence of progression of lung metastasis for 25 months after the operation. CONCLUSIONS: Lymph node metastasis or extraglandular extension has been reported in the few published cases of metastatic PTMC, including the present case, and the average age of these cases was 58.8 ± 12.0 years. Although active surveillance without surgical resection is expected to become a standard of care for PTMC, this case indicates that a subset of PTMC patients with risk factors may develop distant metastases. Hence, careful preoperative screening is required to avoid complications associated with completion thyroidectomy.
BACKGROUND: Distant metastasis from papillary thyroid microcarcinoma (PTMC) is rare. Here we report a case of PTMC with multiple lung metastases. CASE PRESENTATION: A 64-year-old man presented to our hospital with abdominal pain. Computed tomography incidentally revealed multiple lung nodules. The lung tumor was histologically diagnosed as metastasis of papillary thyroid carcinoma (PTC) by core needle biopsy via thoracoscopy. The patient was referred to our department for further examination. Neck ultrasonography revealed a 0.9 cm hypoechoic nodule in the right lobe of the thyroid gland, which was diagnosed as PTC by fine-needle aspiration cytology. Subsequently, total thyroidectomy was performed, followed by radioiodine therapy. Iodine-131 (131-I) scintigraphy showed a strong accumulation in the lung metastasis. The patient presented no evidence of progression of lung metastasis for 25 months after the operation. CONCLUSIONS: Lymph node metastasis or extraglandular extension has been reported in the few published cases of metastatic PTMC, including the present case, and the average age of these cases was 58.8 ± 12.0 years. Although active surveillance without surgical resection is expected to become a standard of care for PTMC, this case indicates that a subset of PTMC patients with risk factors may develop distant metastases. Hence, careful preoperative screening is required to avoid complications associated with completion thyroidectomy.
Authors: Elena Salamanca-Fernández; Miguel Rodriguez-Barranco; Yoe-Ling Chang-Chan; Daniel Redondo-Sánchez; Santiago Domínguez-López; Eloísa Bayo; Dariusz Narankiewicz; José Expósito; María José Sánchez Journal: Endocrine Date: 2018-07-24 Impact factor: 3.633
Authors: Sandeep Kumar Parvathareddy; Abdul K Siraj; Kaleem Iqbal; Zeeshan Qadri; Saeeda O Ahmed; Maha Al-Rasheed; Ahmed A AlQatie; Saif S Al-Sobhi; Fouad Al-Dayel; Khawla S Al-Kuraya Journal: Front Endocrinol (Lausanne) Date: 2022-03-11 Impact factor: 5.555