Papillary Thyroid Carcinoma with Retropharyngeal Node Metastasis Demonstrating Negative I-131 but Positive FDG Uptake on PET/CT.
10.16956/kjes.2016.16.1.18
- Author:
Haiyoung SON
1
;
Hyun Jun HONG
;
Jegyu RYU
;
Jeong Won LEE
;
Ra Gyoung YOON
;
Ilkyun LEE
Author Information
1. Department of Surgery, Catholic Kwandong University International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea. iklee@ish.ac.kr
- Publication Type:Case Report
- Keywords:
Papillary thyroid cancer;
Retropharyngeal lymph node;
18F-FDG PET/CT;
Radioiodine scan
- MeSH:
Diagnosis;
Electrons;
Humans;
Iodine;
Lymph Nodes;
Neoplasm Metastasis*;
Positron-Emission Tomography and Computed Tomography*;
Thyroglobulin;
Thyroid Gland*;
Thyroid Neoplasms*
- From:Korean Journal of Endocrine Surgery
2016;16(1):18-23
- CountryRepublic of Korea
- Language:English
-
Abstract:
Papillary thyroid carcinoma (PTC) is commonly accompanied by cervical lymph node metastasis, whereas metastases to the retropharyngeal lymph nodes (RPN) are rare. Radioactive iodine (RAI) ablation is recommended for detection and treatment of differentiated thyroid carcinoma (DTC). However, in some cases of iodine-negative DTC, F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) can aid in detection of additional lesions. We report on a patient with PTC who had retropharyngeal node involvement with iodine-negative features and low thyroglobulin level at the time of diagnosis but with metastasis identified on FDG PET/CT.
