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PET, thyroid

Seong-Jang Kim, Sang-Woo Lee, Kyoungjune Pak, Sung Ryul Shim
We aimed to explore the role of the diagnostic accuracy of F-18 fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) for the detection of recurrent and/or metastatic diseases in differentiated thyroid cancer (DTC) patients with progressively and/or persistently elevated TgAb levels and negative radioactive iodine whole body scan (RI-WBS) through a systematic review and meta-analysis. The MEDLINE, EMBASE, and Cochrane Library database, from the earliest available date of indexing through June 30, 2017, were searched for studies evaluating the diagnostic performance of F-18 FDG PET/CT for the detection of recurrent and/or metastatic diseases in DTC patients with progressively and/or persistently elevated TgAb levels and negative RI-WBS...
March 20, 2018: Endocrine-related Cancer
Jiao Liu, Baoping Liu, Yanxia Yu, Fangfang Chao, Yan Liu, Xingmin Han
OBJECTIVE: In the follow-up of patients with differentiated thyroid cancer (DTC), several patients had elevated serum levels of antithyroglobulin antibody (TgAb), undetectable serum thyroglobulin (Tg), and negative radioiodine whole body scan (131 I-WBS). We describe the use of neck ultrasonography (US) and fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (18 F-FDG PET/CT) imaging in these patients to investigate this clinically challenging problem and propose treating...
March 20, 2018: Hellenic Journal of Nuclear Medicine
Ludmila S Almeida, Maidane C Araújo, Denise E Zantut-Wittmann, Lígia V Assumpção, Thiago F Souza, Cleide M Silva, Juliana L Argenton, Allan O Santos, Jair Mengatti, Celso D Ramos, Elba C Etchebehere
BACKGROUND: Radioiodine-refractory thyroid carcinomas (RAIRs) are characterized by reduced expression of sodium-iodine symporter, rising serum thyroglobulin levels, and negative whole-body radioiodine scans. Interestingly, RAIRs continue to express somatostatin receptors and can be identified with Ga-DOTATATE PET/CT imaging. OBJECTIVE: The objective of this study was to compare lesion detectability in Ga-DOTATATE PET/CT performed with elevated thyroid-stimulating hormone (eTSH) levels with suppressed thyroid-stimulating hormone (sTSH) levels...
March 14, 2018: Nuclear Medicine Communications
Hongkai Wang, Ziyu Tan, Qiang Zheng, Jing Yu
PURPOSE: Recent researches have demonstrated the value of using 2-deoxy-2-[18 F]fluoro-D-glucose ([18 F]FDG) positron emission tomography (PET) imaging to reveal the hypothyroidism-related damages in local brain regions. However, the influence of hypothyroidism on the entire brain network is barely studied. This study focuses on the application of graph theory on analyzing functional brain networks of the hypothyroidism symptom. PROCEDURES: For both the hypothyroidism and the control groups of Wistar rats, the functional brain networks were constructed by thresholding the glucose metabolism correlation matrices of 58 brain regions...
March 12, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
Min Liu, Lingxiao Cheng, Yuchen Jin, Maomei Ruan, Shiwei Sheng, Libo Chen
The quantitative relationship between iodine and glucose metabolism in metastases from differentiated thyroid cancer (DTC) remains unknown. Aim of the prospective study was to establish the value of18 F-FDG PET/CT in predicting131 I-avidity of metastases from DTC before the first radioiodine therapy. A total of 121 postoperative DTC patients with elevated stimulated serum thyroglobulin (ssTg) who underwent131 I adjuvant therapy or therapy after18 F-FDG PET/CT scan were enrolled. The Receiver operating characteristic curve was established to create an optimal cut-off point and evaluate the value of SUVmax for predicting131 I-avidity...
March 12, 2018: Scientific Reports
Huazheng Shi, Zuguo Yuan, Zheng Yuan, Chunshan Yang, Jian Zhang, Yi Shou, Wenrui Zhang, Zhaofu Ping, Xin Gao, Shiyuan Liu
Objective: To assess clinical value of fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) for differentiation of malignant from benign focal thyroid incidentaloma. Materials and Methods: This retrospective study included 99 patients with focal thyroid incidentaloma of 5216 non-thyroid cancer patients that had undergone PET/CT. PET/CT semi-quantitative parameters, volume-based functional parameters, metabolic tumor volume (MTV), and total lesion glycolysis (TLG) of thyroid incidentaloma were assessed...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
Giorgio Treglia, Adriana Tamburello, Luca Giovanella
PURPOSE: Several articles have demonstrated the high diagnostic performance of somatostatin receptor positron emission tomography (PET) in patients with neuroendocrine tumours (NETs). On the other hand, only a few studies have evaluated the detection rate (DR) of this imaging method in recurrent medullary thyroid carcinoma (MTC). We aimed to perform a systematic review and a meta-analysis of the DR of somatostatin receptor PET or PET/CT in patients with recurrent MTC to add evidence-based data to this setting...
October 2017: Hormones: International Journal of Endocrinology and Metabolism
Paulo Schiavom Duarte, José Flávio Gomes Marin, José Willegaignon de Amorim de Carvalho, Marcelo Tatit Sapienza, Carlos Alberto Buchpiguel
Iodine/FDG "flip-flop" phenomenon inside large metastatic thyroid cancer lesions has been rarely described. We present a case of this phenomenon better characterized using SPECT/CT and PET/CT studies.
March 7, 2018: Clinical Nuclear Medicine
Birthe Heitkötter, Konrad Steinestel, Marcel Trautmann, Inga Grünewald, Peter Barth, Heidrun Gevensleben, Martin Bögemann, Eva Wardelmann, Wolfgang Hartmann, Kambiz Rahbar, Sebastian Huss
Aim: PSMA (prostate-specific membrane antigen) is physiologically expressed in normal prostate tissue and over expressed in prostate cancer cells, therefore constituting a potential target for antibody-based radioligand therapy. Very recent imaging findings reported PSMA-PET/CT uptake in various thyroid lesions. We were therefore encouraged to systematically analyse PSMA expression in different benign and malignant thyroid lesions. Methods: Immunohistochemistry was used to detect PSMA expression in 101 thyroid lesions, while neovasculature was identified by CD34 immunostaining...
February 9, 2018: Oncotarget
Ke-Hao Huang, Ming-Cheng Tai, Lung-Chi Lee, Tzu-Heng Weng, Yi-Hao Chen, Li-Fan Lin, Jiann-Torng Chen, Da-Wen Lu, Ching-Long Chen
RATIONALE: Vogt-Koyanagi-Harada (VKH) syndrome is a rare disease and could be associated with autoimmune thyroid disease (AITD). This report was aimed to investigate the utility of F-fludeoxyglucose positron emission tomography/computed tomography (F-FDG PET/CT) for the diagnosis of VKH syndrome with AITD and to perform a literature review on the association between the 2 diseases. PATIENT CONCERNS: A 55-year-old woman without the history of ocular trauma suffered from chronic headache...
March 2018: Medicine (Baltimore)
Saurabh Arora, Nishikant Avinash Damle, Girish Kumar Parida, Abhinav Singhal, Harish Nalli, Shreya Dattagupta, Chandrasekar Bal
The prostate-specific membrane antigen (PSMA) is highly expressed in prostate cancer cells. Few other malignancies have shown expression of PSMA. We present a case of 35-year-old man with medullary thyroid carcinoma, post total thyroidectomy and bilateral neck dissection, now presenting with rising calcitonin levels (doubling time 9 months) and local neck recurrence with negative I-MIBG scan. We decided to perform Ga-PSMA-HBED-CC PET/CT scan to assess PSMA expression and explore the therapeutic option in view of rising serum calcitonin...
February 27, 2018: Clinical Nuclear Medicine
Kenichiro Imura, Nobuki Yamaoka, Hideyuki Chou, Hirotaka Furuke, Sachie Tanaka, Tatsuya Kumano, Shuhei Komatsu, Katsumi Shimomura, Jun Ikeda, Fumihiro Taniguchi, Yasuhiro Shioaki
The patient was a 68-year-old man who underwent Hartmann's procedure for a fistula due to rectal cancer in August 2012. The cancer was tub2>tub1, pSE, pN2, pH2, pM1(intrapulmonary metastasis), stage IV. The patient received 5 courses of FOLFOX and bevacizumab as adjuvant chemotherapy. In December 2012, the patient was seen by Otolaryngology for hoarseness. A neck examination revealed induration of the left lobe of the thyroid, and FNA biopsy strongly suggested metastasis of rectal cancer to the thyroid. FDG-PET was performed and revealed extensive accumulation of FDG at the same site...
February 2018: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Duygu Has Şimşek, Yasemin Şanlı, Serkan Kuyumcu, Bora Başaran, Ayşe Mudun
OBJECTIVE: The aim of this study was to present our experience in the baseline evaluation of carotid body paragangliomas (CBP) with68 Ga-DOTATATE PET-CT. METHODS: Five patients (4F, 1M; age 24-73 years) with CBPs who underwent68 Ga-DOTATATE PET-CT scan before the treatment were evaluated retrospectively. PET-CT images were analyzed visually as well as semiquantitatively, with measurement of maximum standardized uptake value (SUVmax ). RESULTS: All patients had unilateral CBP lesion, showed intense68 Ga-DOTATATE uptake in PET-CT...
February 21, 2018: Annals of Nuclear Medicine
J Breza, J Breza
INTRODUCTION: In the MEN 2A syndrome, which is the most common of the three types of MEN, three endocrine systems are affected simultaneously or subsequently by the development of tumours manifested by medullary thyroid gland carcinoma, pheochromocytoma (often bilateral) and hyperparathyroidism. MATERIAL AND METHODS: 27 patients from 3 families affected by MEN 2A syndrome were examined clinically (by detecting the effects of catecholamine overproduction), biochemically (screening for metanephrine and normetanephrine in the serum), visualization (CT, MRI, MIBG, PET CT) and some of them also genetically (DNA fragment analysis obtained by PCR amplification)...
2018: Bratislavské Lekárske Listy
Masao Takenobu, Sueyoshi Moritani, Kana Yoshioka, Tsuyoshi Morisaki, Hiroya Kitano
Thyroid metastasis from head and neck squamous cell carcinoma (SCC) is a very rare form of rarely observed metastatic thyroid tumor. We herein report a case of thyroid metastasis from oropharyngeal SCC (OSCC). The patient was a 68-year-old male diagnosed with p16-positive tonsillar OSCC on the right side with multiple lymph node metastases and a thyroid mass, which was determined as metastatic p16-positive OSCC by immunohistochemistry of specimens collected by fine-needle aspiration cytology (FNAC). He received one cycle of induction chemotherapy followed by concurrent chemoradiotherapy...
February 15, 2018: Endocrine Journal
Arun Sasikumar, Ajith Joy, M R A Pillai, Karuna Elza Oommen, R Jayakumar
A 64-year-old woman underwent completion thyroidectomy with upper tracheal ring resection and right-sided neck dissection for papillary carcinoma of the thyroid infiltrating the trachea and was given I radioiodine treatment. Three years later, she presented with hemoptysis. On evaluation, she had increased serum thyroglobulin and negative iodine scan (TENIS). F-FDG PET/CT scan did not identify any site of disease. One year later, Ga-PSMA scan done revealed a moderate focal tracer-avid intratracheal soft tissue; biopsy revealed it to be metastatic papillary carcinoma of the thyroid...
April 2018: Clinical Nuclear Medicine
Georgi I Popivanov, Pavel Bochev, Radka Hristoskova, Ventsislav M Mutafchiyski, Mihail Tabakov, Anthony Philipov, Roberto Cirocchi
RATIONALE: Differentiated thyroid cancer is the most common endocrine malignancy with concomitant hematological malignancy in 7%. PATIENT CONCERNS: We present a case of a synchronous papillary thyroid cancer and a follicular variant of non-Hodgkin lymphoma and discuss the possible diagnostic and treatment dilemmas. DIAGNOSIS: A 48-year-old female was reffered to our hospital with diagnosis "thyroid cancer". Due to a history compatable of synchronous lymphoproliferative disease we performed a computed tomography, which revealed multiple enlarged lymph nodes in the neck, mediastinum, axilla and abdomen...
February 2018: Medicine (Baltimore)
N T K Thanseer, Sanjay Kumar Bhadada, Ashwani Sood, Ashwin Singh Parihar, Divya Dahiya, Priyanka Singh, Rajender Kumar Basher, Ashim Das, Bhagwant R Mittal
[This corrects the article DOI: 10.1007/s13139-017-0488-3.].
February 2018: Nuclear Medicine and Molecular Imaging
Armando Bartolazzi, Salvatore Sciacchitano, Calogero D'Alessandria
Galectins (S-type lectins) are an evolutionarily-conserved family of lectin molecules, which can be expressed intracellularly and in the extracellular matrix, as well. Galectins bind β-galactose-containing glycoconjugates and are functionally active in converting glycan-related information into cell biological programs. Altered glycosylation notably occurring in cancer cells and expression of specific galectins provide, indeed, a fashionable mechanism of molecular interactions able to regulate several tumor relevant functions, among which are cell adhesion and migration, cell differentiation, gene transcription and RNA splicing, cell cycle and apoptosis...
February 2, 2018: International Journal of Molecular Sciences
William Makis, Anthony Ciarallo, Stephan Probst
A 67-year-old female patient with no prior history of benign thyroid disease was diagnosed with primary thyroid lymphoma and was staged with 18F-fluoro-2-deoxy-D-glucose (18F-FDG) positron emission tomography/computed tomography (PET/CT). She was treated with chemotherapy and external beam radiation therapy, and a follow-up PET/CT showed significant reduction in the size of the thyroid lymphoma with persistent intense 18F-FDG uptake, which was interpreted as partial response to therapy. However, two subsequent PET/CT studies showed no change in the persistent intense 18F-FDG uptake in the thyroid and a biopsy confirmed the presence of thyroiditis with no evidence of residual lymphoma...
February 1, 2018: Molecular Imaging and Radionuclide Therapy
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