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https://www.readbyqxmd.com/read/27904869/value-of-dedicated-head-and-neck-18-f-fdg-pet-ct-protocol-in-detecting-recurrent-and-metastatic-lesions-in-post-surgical-differentiated-thyroid-carcinoma-patients-with-high-serum-thyroglobulin-level-and-negative-131-i-whole-body-scan
#1
Mai Hong Son, Bui Quang Bieu, Le Ngoc Ha
OBJECTIVES: In clinical practice, approximately 10-25% of post-surgical differentiated thyroid carcinoma (DTC) patients with high serum thyroglobulin (Tg) and negative (131)I whole-body scan (WBS) have poor prognosis due to recurrent or metastatic lesions after radioactive iodine treatment. The purpose of this study was to evaluate the value of (18)F-FDG PET/CT scan in DTC patients with high serum Tg level and negative (131)I WBS. METHODS: 69 post-surgical DTC patients with high serum Tg level and negative post ablation (131)I WBS were enrolled in this study...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27882353/longitudinal-pet-imaging-demonstrates-biphasic-car-t-cell-responses-in-survivors
#2
Yogindra Vedvyas, Enda Shevlin, Marjan Zaman, Irene M Min, Alejandro Amor-Coarasa, Spencer Park, Susan Park, Keon-Woo Kwon, Turner Smith, Yonghua Luo, Dohyun Kim, Young Kim, Benedict Law, Richard Ting, John Babich, Moonsoo M Jin
Clinical monitoring of adoptive T cell transfer (ACT) utilizes serial blood analyses to discern T cell activity. While useful, these data are 1-dimensional and lack spatiotemporal information related to treatment efficacy or toxicity. We utilized a human genetic reporter, somatostatin receptor 2 (SSTR2), and PET, to quantitatively and longitudinally visualize whole-body T cell distribution and antitumor dynamics using a clinically approved radiotracer. Initial evaluations determined that SSTR2-expressing T cells were detectable at low densities with high sensitivity and specificity...
November 17, 2016: JCI Insight
https://www.readbyqxmd.com/read/27872746/a-prospective-cohort-study-to-assess-the-role-of-fdg-pet-in-differentiating-benign-and-malignant-follicular-neoplasms
#3
K Alok Pathak, Andrew L Goertzen, Richard W Nason, Thomas Klonisch, William D Leslie
BACKGROUND: Follicular and Hürthle cell neoplasms are diagnostic challenges. This prospective study was designed to evaluate the efficacy of [18F]-2-fluoro-2-deoxy-d-glucose (FDG) positron emission tomography/computed tomography (PET/CT) in predicting the risk of malignancy in follicular/Hürthle cell neoplasms. MATERIALS AND METHODS: Fifty thyroid nodules showing follicular/Hürthle cell neoplasm on prior ultrasonography guided fine needle aspiration cytology (FNAC) were recruited into this study...
December 2016: Annals of Medicine and Surgery
https://www.readbyqxmd.com/read/27863564/designing-and-developing-pet-based-precision-model-in-thyroid-carcinoma-the-potential-avenues-for-a-personalized-clinical-care
#4
REVIEW
Sandip Basu, Rahul Vithalrao Parghane
This communication enumerates the current uses and potential areas where PET could be clinically utilized for developing "precision medicine" type model in thyroid carcinoma. (1) In routine clinics, PET imaging (with fluorodeoxyglucose [FDG]) is utilized to investigate patients of differentiated thyroid carcinoma (DTC) with high thyroglobulin and negative iodine scintigraphy (TENIS) and in medullary carcinoma thyroid (MCT) when the tumor markers (eg, calcitonin and carcino embryonic antigen [CEA]) are raised postoperatively (PET with FDG, (68)Ga-DOTA-NOC/TATE, FDOPA)...
January 2017: PET Clinics
https://www.readbyqxmd.com/read/27849386/18f-fdg-pet-suv-as-a-prognostic-marker-of-increasing-size-in-thyroid-cancer-tumors
#5
Ishita Singh, Athanasios Bikas, Carlos A Garcia, Sameer Desale, Leonard Wartofsky, Kenneth D Burman
Background 18F-FDG- PET/CT scans are used in high-risk thyroid cancer patients to determine the presence of metastasis. The prognostic significance of increases in SUVs (Standard Unit Values) has not been clearly defined. This pilot study investigated the correlation between increases in SUV with subsequent changes in size of individual lesions. Methods A retrospective chart review of patients with histologically confirmed thyroid cancer, monitored with serial 18F-FDG- PET/CT scans from 2008 to 2013, was performed...
November 16, 2016: Endocrine Practice
https://www.readbyqxmd.com/read/27846003/imaging-of-prostate-specific-membrane-antigen-expression-in-metastatic-differentiated-thyroid-cancer-using-68ga-hbed-cc-psma-pet-ct
#6
Susanne Lütje, Benedikt Gomez, Joseph Cohnen, Lale Umutlu, Martin Gotthardt, Thorsten D Poeppel, Andreas Bockisch, Sandra Rosenbaum-Krumme
PURPOSE: The prostate-specific membrane antigen (PSMA) was shown to be overexpressed on the neovasculature of several malignancies. Here, the role of Ga-HBED-CC-PSMA PET/CT for the detection of PSMA expression in patients with metastasized differentiated thyroid cancer (DTC) was evaluated. METHODS: Six patients with iodine-negative and F-FDG-positive metastasized DTC (mean TG, 1616 ng/mL) received 71-93 MBq of the Ga-labeled PSMA ligand and underwent PET/CT at 62 ± 7 minutes p...
January 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27844413/relationship-between-circulating-anti-thyroglobulin-antibodies-tgab-and-tumor-metabolism-in-patients-with-differentiated-thyroid-cancer-dtc-prognostic-implications
#7
S Morbelli, G Ferrarazzo, E Pomposelli, F Pupo, G Pesce, I Calamia, F Fiz, A Clapasson, M Bauckneht, M Minuto, G Sambuceti, M Giusti, M Bagnasco
PURPOSE: TgAb have been proposed as tumor markers in DTC. Recent evidence links TgAb levels with DTC aggressiveness. We aimed to evaluate the relationship between TgAb and tumor glucose metabolism in DTC patients. METHODS: Seventy-one DTC patients who underwent (18)F-FDG PET/CT were included. According to TgAb value and trends, patients were divided into TgAb positive (TgAb+) or negative (TgAb-) as well as in patients with increasing (Inc-TgAb) or decreasing (Dec-TgAb) trend...
November 14, 2016: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/27834016/is-c-11-methionine-pet-ct-able-to-localise-sestamibi-negative-parathyroid-adenomas
#8
Theresia Weber, Martin Gottstein, Sabrina Schwenzer, Ambros Beer, Markus Luster
BACKGROUND: Patients with primary hyperparathyroidism (pHPT) and a negative preoperative Tc-99 sestamibi (MIBI) scintigraphy are considered to have a higher risk of persistent disease. The aim of this study was to assess whether additional imaging with C-11 methionine positron emission tomography/computed tomography (Met-PET/CT) is able to localise sestamibi-negative hyperfunctioning parathyroid glands. METHODS: In 50 patients (38 females, 12 males, age 13-81 years) with pHPT and negative localisation procedures such as ultrasound and sestamibi, a Met-PET/CT was performed before parathyroid surgery...
November 10, 2016: World Journal of Surgery
https://www.readbyqxmd.com/read/27824968/an-intrapericardial-ectopic-thyroid-mimicking-metastasis-in-a-patient-with-papillary-thyroid-cancer-localization-differential-diagnosis-by-18-f-fdg-pet-ct-and-ablation-by-131-i
#9
Seol Hoon Park, Minjung Seo, Tae Young Park, Seong Nam-Goong
We report a very rare case of incidental intrapericardial thyroid in a papillary thyroid cancer patient. Post ablation scan revealed iodine-131 ((131)I) uptake in the mid-chest. Fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) was performed and showed a (18)F-FDG avid lesion between the right atrium and the ascending aorta, (which was) shown tube an ectopic thyroid and not metastasis. The lesion disappeared on a 6 month follow-up (123)I whole body scan while serum thyroglobulin was negative...
November 8, 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824959/risk-factors-and-stratification-for-recurrence-of-patients-with-differentiated-thyroid-cancer-elevated-thyroglobulin-and-negative-i-131-whole-body-scan-by-restaging-18-f-fdg-pet-ct
#10
Kursat Okuyucu, Semra Ince, Engin Alagoz, Ozdes Emer, Huseyin San, Elif Balkan, Aslı Ayan, Coskun Meric, Cem Haymana, Cengizhan Acıkel, Bengul Gunalp, Alper Ozgur Karacalioglu, Nuri Arslan
OBJECTIVE: In nearly 20%-30% of patients with differentiated thyroid carcinoma (DTC) relapse and 7% of them die during the next 10 years after initial diagnosis. In 10%-30% of patients with DTC after ablation therapy during the follow-up show a negative iodine-131 ((131)I) whole-body screening test ((131)I WBS) and increased serum thyroglobulin (Tg) level. Loss of ability of DTC metastatic lesions to trap (131)I is associated with pure survival and often aggressive disease. Several studies have shown that in DTC cases non trapping (131)I, fluorine-18-fluorodeoxyglucose positron emission tomography ((18)F-FDG PET) can detect recurrence or metastases with high sensitivity (80%-90%)...
November 8, 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27824322/68ga-dotanoc-focal-pulmonary-activity-with-no-corresponding-ct-abnormality
#11
Emmanouil Panagiotidis, Nagabhushan Seshadri, Rashika Fernando, Priya Healey, Sobhan Vinjamuri
A 28-year-old woman with medullary thyroid cancer treated with total thyroidectomy and bilateral central and right lateral neck nodal resection postoperatively had increasing calcitonin and carcinoembryonic antigen values. A Ga-DOTANOC PET/CT study performed showed tracer-avid disease in the neck, mediastinal, and hilar lymph nodes. However, there were 3 tracer-avid foci in the lungs bilaterally, suggestive of lung metastases but with no corresponding abnormalities on low-dose CT. A negative contrast-enhanced CT of the lungs along with clinical and radiological follow-up confirmed that the lung activity was artifactual, demonstrating the possibility of Ga-DOTANOC-avid iatrogenic pulmonary microembolism...
December 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27824319/multiple-neoplasms-simultaneously-diagnosed-by-complementary-triple-tracer-pet-ct-and-123i-mibg-scintigraphy
#12
Esben Søndergaard, Andreas Ebbehoj, Per Løgstrup Poulsen, Lars Christian Gormsen
A 51-year-old woman with recurrent paragangliomas and catecholamine hypersecretion underwent F-FDG PET/CT for localization and evaluation of extent of disease. This revealed multiple F-FDG avid tumors with localization pattern suggesting multiple primary neoplasms of different origin rather than disseminated paraganglioma. Three additional nuclear medicine investigations were performed (F-DOPA PET/CT, Ga-DOTATOC PET/CT and I-MIBG scintigraphy) to further characterize tumor biology, guide diagnostic workup, and decide treatment strategy...
January 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27818005/immune-mediated-disease-in-ipilimumab-immunotherapy-of-melanoma-with-fdg-pet-ct
#13
REVIEW
Jason W Wachsmann, Ramapriya Ganti, Fangyu Peng
RATIONALE AND OBJECTIVES: The purposes of this study were to provide a case-based overview of various immune-mediated side effects detected by 18F-Fluorodeoxyglucose (F-18 FDG) positron emission tomography-computed tomography (PET-CT) in the patients receiving ipilimumab immunotherapy for treatment of malignant melanoma, and discuss the importance of recognizing immune-mediated side effects in the use of F-18 FDG PET-CT for monitoring therapeutic effects of ipilimumab on metastatic melanoma...
November 4, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27809936/impact-of-combined-fdg-pet-ct-and-mri-on-the-detection-of-local-recurrence-and-nodal-metastases-in-thyroid-cancer
#14
Johann-Martin Hempel, Roman Kloeckner, Sandra Krick, Daniel Pinto Dos Santos, Simin Schadmand-Fischer, Patrick Boeßert, Sotirios Bisdas, Matthias M Weber, Christian Fottner, Thomas J Musholt, Mathias Schreckenberger, Matthias Miederer
BACKGROUND: Suspected recurrence of thyroid carcinoma is a diagnostic challenge when findings of both a radio iodine whole body scan and ultrasound are negative. PET/CT and MRI have shown to be feasible for detection of recurrent disease. However, the added value of a consensus reading by the radiologist and the nuclear medicine physician, which has been deemed to be helpful in clinical routines, has not been investigated. This study aimed to investigate the impact of combined FDG-PET/ldCT and MRI on detection of locally recurrent TC and nodal metastases in high-risk patients with special focus on the value of the multidisciplinary consensus reading...
November 3, 2016: Cancer Imaging: the Official Publication of the International Cancer Imaging Society
https://www.readbyqxmd.com/read/27804855/the-thyroid-ultrasound-and-other-imaging-procedures-in-the-pediatric-age
#15
Claudio Spinelli, Federica Guidoccio, Mariano Grosso
The purpose of this review is to provide a reappraisal of the diagnostic imaging procedures for thyroid carcinoma in pediatric patients, including thyroid ultrasound (US), ultrasound-guided fine-needle aspiration biopsy (FNAB), scintigraphy, radiological techniques (CT, MR), and PET/CT. The most frequent indication for thyroid imaging is characterization of a palpable mass in the neck or thyroid gland. Thyroid US is a first-line examination for visualizing the thyroid gland as it provides anatomic and perfusion information; on the other hand, scintigraphy mostly provides functional information but combined with some anatomic information as well...
October 31, 2016: Current Pediatric Reviews
https://www.readbyqxmd.com/read/27801739/18f-florbetaben-a-new-tool-for-amyloidosis-staging
#16
Emmanuel D'Estanque, Benjamin Chambert, Olivier Moranne, Pierre Olivier Kotzki, Vincent Boudousq
We report the case of a 73-year-old man with a documented (renal biopsy) light-chain amyloidosis (AL) imaged with F-AV-1 (F-florbetaben) compared with a volunteer. A cardiac amyloidosis was suspected. As it was an AL and not a transthyretin amyloidosis, F-FDG and F-florbetaben PET/CT were preferred to bone scan. F-FDG scintigraphy showed a focal cardiac hypermetabolism. In addition of the heart, F-florbetaben scintigraphy showed an intense spleen and thyroid pathologic uptake and a moderate salivary gland and kidney uptake...
January 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27800198/a-case-report-of-neurosarcoidosis-presenting-as-a-lymphoma-mimic
#17
Gurcharanjeet Kaur, Lauren Cameron, Olga Syritsyna, Patricia Coyle, Agnes Kowalska
Objective. To describe a unique presentation of neurosarcoidosis. Background. Central nervous system involvement is rare in sarcoidosis. Sarcoidosis can be severe and can be mistaken for systemic lymphoma. Case Description. A 55-year-old right-handed white male with past medical history of obstructive sleep apnea, Raynaud's disease, and Hashimoto's thyroiditis was noted to have cognitive decline over a duration of few weeks and 20 lb weight loss. His neurologic exam (including cranial nerves) was normal except for five-minute recall...
2016: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/27796544/the-intensity-of-18fdg-uptake-does-not-predict-tumor-growth-in-patients-with-metastatic-differentiated-thyroid-cancer
#18
Marie Terroir, Isabelle Borget, François Bidault, Marcel Ricard, Frédéric Deschamps, Dana Hartl, Lambros Tselikas, Laurent Dercle, Jean Lumbroso, Eric Baudin, Amandine Berdelou, Désirée Deandreis, Martin Schlumberger, Sophie Leboulleux
PURPOSE: In patients with metastatic differentiated thyroid carcinoma (DTC), fluorodeoxyglucose (FDG) uptake as well as age, tumor size and radioactive iodine (RAI) uptake are prognostic factors for survival. High FDG uptake is a poor prognostic factor and lesions with high FDG uptake are often considered aggressive, but the predictive value of FDG uptake for morphological progression is unknown. The principal aim of this retrospective single center study was to determine whether the intensity of FDG uptake was correlated on a per lesion analysis with tumor growth rate (TGR) expressed as the percentage of increase in tumor size during 1 year (1-year TGR)...
October 29, 2016: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/27777040/uterine-leiomyosarcoma-metastatic-to-thyroid-shown-by-18-f-fdg-pet-ct-imaging
#19
M Gauthé, N Testart Dardel, C Nascimento, M Trassard, A Banal, J-L Alberini
About one third of focal thyroid uptakes in a fluorodeoxyglucose (FDG) positron emission tomography/computerized tomography (PET/CT) study are malignant, the most frequent histological type being papillary carcinoma. Metastases to the thyroid account for approximately 7.5% of thyroid malignancies and come mainly from kidney, lung, head and neck, and breast cancers. We report the case of a 64-year-old woman presenting a fast growing thyroid nodule whose primitive or metastatic origin was not obvious, for which (18)F-FDG PET/CT helped in the diagnostic process and in the later management of the patient...
October 21, 2016: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/27774839/differences-in-brain-glucose-metabolism-during-preparation-for-131-i-ablation-in-thyroid-cancer-patients-thyroid-hormone-withdrawal-versus-recombinant-human-thyrotropin
#20
Hyeonseok S Jeong, Eun Kyoung Choi, In-Uk Song, Yong-An Chung, Jong-Sik Park, Jin Kyoung Oh
BACKGROUND: In preparation for (131)I ablation, temporary withdrawal of thyroid hormone is commonly used in patients with thyroid cancer after total thyroidectomy. The current study aimed to investigate brain glucose metabolism and its relationships with mood or cognitive function in these patients using (18)F-fluoro-2-deoxyglucose positron emission tomography ((18)F-FDG-PET). METHOD: A total of 40 consecutive adult patients with thyroid carcinoma who had undergone total thyroidectomy were recruited for this cross-sectional study...
November 28, 2016: Thyroid: Official Journal of the American Thyroid Association
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