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Thyroid imaging

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https://www.readbyqxmd.com/read/28727740/genetically-engineered-suicide-gene-in-mesenchymal-stem-cells-using-a-tet-on-system-for-anaplastic-thyroid-cancer
#1
Senthilkumar Kalimuthu, Ji Min Oh, Prakash Gangadaran, Liya Zhu, Ho Won Lee, Yong Hyun Jeon, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
Anaplastic thyroid cancer (ATC) is the most aggressive malignancy of the thyroid, during which undifferentiated tumors arise from the thyroid follicular epithelium. ATC has a very poor prognosis due to its aggressive behavior and poor response to conventional therapies. Gene-directed enzyme/prodrug therapy using genetically engineered mesenchymal stromal cells (MSC) is a promising therapeutic strategy. The doxycycline (DOX)-controlled Tet inducible system is the most widely utilized regulatory system and could be a useful tool for therapeutic gene-based therapies...
2017: PloS One
https://www.readbyqxmd.com/read/28724845/ultrasonography-based-classification-and-reporting-system-for-the-malignant-risk-of-thyroid-nodules
#2
Ensheng Xue, Meijuan Zheng, Sufang Zhang, Liping Huang, Qingfu Qian, Yunlin Huang
OBJECTIVE: The aim of this study was to test the predictive value of a Thyroid Imaging Reporting and Data System (TI-RADS) for malignant thyroid nodules. METHODS: Ultrasonographic data was examined for 910 thyroid nodules with histopathologically confirmed diagnoses. Nodules were placed into incomplete (category 0) or complete final categories (1, 2, 3a, 3b, 3c, 4, or 5) based on the presence and number of ultrasonographic features of malignancy, and the predictive value for the malignancy of nodules in categories 2-4 was assessed...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28724406/iodine-concentration-calculated-by-dual-energy-computed-tomography-dect-as-a-functional-parameter-to-evaluate-thyroid-metabolism-in-patients-with-hyperthyroidism
#3
Duong Duc Binh, Takahito Nakajima, Hidenori Otake, Tetsuya Higuchi, Yoshito Tsushima
BACKGROUND: Thyroid function in patients with Grave's disease is usually evaluated by thyroid scintigraphy with radioactive iodine. Recently, dual-energy computed tomography (DECT) with two different energy X-rays can calculate iodine concentrations and can be applied for iodine measurements in thyroid glands. This study aimed to assess the potential use of DECT for the functional assessment of the thyroid gland. METHODS: Thirteen patients with Grave's disease treated at our hospital from May to September 2015 were included in this retrospective study...
July 19, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28723285/case-244-systemic-amyloidosis-a-complication-of-waldenstr%C3%A3-m-macroglobulinemia
#4
Maja Hrabak-Paar, Marko Kralik
History A 68-year-old man was admitted to the hospital for work-up because of generalized fatigue, anorexia, chronic diarrhea, and weight loss. Laboratory work-up revealed an erythrocyte sedimentation rate of 58 mm/h (reference range, 3-23 mm/h), a hemoglobin level of 14.1 g/dL (reference range, 13.8-17.5 g/dL), a leukocyte count of 8.1 × 10(9)/L (reference range, [3.4-9.7] × 10(9)/L), a platelet count of 223 × 10(9)/L (reference range, [158-424] × 10(9)/L), an alkaline phosphatase level of 85 U/L (1.42 μkat/L) (normal level, <142 U/L [2...
August 2017: Radiology
https://www.readbyqxmd.com/read/28720762/quantitative-measurement-of-the-thyroid-uptake-function-of-mouse-by-cerenkov-luminescence-imaging
#5
Chien-Chih Ke, Zi-Ming He, Ya-Ju Hsieh, Chia-Wen Huang, Jia-Je Li, Luen Hwu, Yi-An Chen, Bang-Hung Yang, Chi-Wei Chang, Wen-Sheng Huang, Ren-Shyan Liu
Cerenkov luminescence imaging (CLI) has been an evolutional and alternative approach of nuclear imaging in basic research. This study aimed to measure the (131)I thyroid uptake of mouse using CLI for assessment of thyroid function. Quantification of (131)I thyroid uptake of mice in euthyroid, hypothyroid and hyperthyroid status was performed by CLI and γ-scintigraphy at 24 hours after injection of (131)I. The (131)I thyroid uptake was calculated using the equation: (thyroid counts - background counts)/(counts of injected dose of (131)I) × 100%...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28719979/prevalence-of-protective-shielding-utilization-for-radiation-dose-reduction-in-adult-patients-undergoing-body-scanning-using-computed-tomography
#6
Shoaib Safiullah, Roshan M Patel, Brittany Uribe, Kyle Spradling, Chandana Lall, Lishi Zhang, Zhamshid Okhunov, Ralph Clayman, Jaime Landman
PURPOSE: Ionizing radiation is implicated in nearly 2% of malignancies in the United States; radiation shields prevent unnecessary radiation exposure during medical imaging. Contemporary radiation shield utilization for adult patients in the United States is poorly defined. Therefore, we evaluated the prevalence of protective shielding utilization in adult patients undergoing computed tomography scans in United States' hospitals. METHODS: An online survey was sent to established radiology departments randomly selected from the 2015 American Hospital Association Guide...
July 18, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28718944/the-effect-of-routine-radiological-reporting-of-thyroid-incidentalomas-on-rates-of-thyroid-needle-biopsy-thyroid-surgery-and-detection-of-thyroid-malignancy
#7
J D Sinnott, R Mortimer, J Smith, E Skelton, K Drinkwater, D Lipscomb, D C Howlett
OBJECTIVE: This study looked at the effect of a changing radiology reporting policy to routinely review the thyroid gland where visible and report on any thyroid lesion, recommending further investigation as appropriate. CONTEXT: Incidentaloma is a term used to describe a lesion found on imaging unrelated to the clinical issue under investigation. There is variability in the radiological reporting of thyroid incidentalomas and conflicting recommendations as to how these lesions should be managed...
July 18, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28717580/photoacoustic-ultrasound-dual-imaging-of-human-thyroid-cancers-an-initial-clinical-study
#8
Meng Yang, Lingyi Zhao, Xujin He, Na Su, ChenYang Zhao, Hewen Tang, Tao Hong, Wenbo Li, Fang Yang, Lin Lin, Bing Zhang, Rui Zhang, Yuxin Jiang, Changhui Li
We reported an initial clinical study of in vivo human thyroid by a photoacoustic/ultrasound handheld probe. Our dual-modality system is based on a high-end clinical ultrasound machine. Both healthy and cancerous thyroids were imaged non-invasively, and we compared the photoacoustic imaging with color Doppler ultrasound. The results of photoacoustic thyroid imaging could reveal many blood vessels that were not sensitive for Doppler ultrasound. Our study demonstrated that photoacoustic imaging could provide important complementary information for traditional ultrasound thyroid examination, which has a great potential for clinical diagnosis...
July 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28705700/incidental-primary-intradural-carcinoid-tumor-in-a-patient-with-lumbar-radiculopathy
#9
Stavros Koustais, Philip O'Halloran, Alfrazdaq Hassan, Francesca Brett, Steven Young
BACKGROUND: Carcinoid tumors are neuroendocrine neoplasms derived from enterochromaffin cells. Central nervous system involvement is rare. The reported cases include metastases to brain or spinal cord, as well as primary skeletal or extradural disease resulting in compressive myelo-radiculopathy. There are two previously reported cases of primary intradural extramedullary carcinoid tumor, presenting with compressive symptoms. We report the first case of primary incidental intradural extramedullary carcinoid tumor...
July 10, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28704384/quantitative-thyroglobulin-response-to-radioactive-iodine-treatment-in-predicting-radioactive-iodine-refractory-thyroid-cancer-with-pulmonary-metastasis
#10
Chen Wang, Xin Zhang, Hui Li, Xin Li, Yansong Lin
OBJECTIVE: Current diagnosis of radioactive iodine (RAI)-refractory (RAIR) differentiated thyroid cancer (DTC) is based on the imaging technique, which is of a high cost. Serum thyroglobulin (Tg) is a sensitive and easily obtained biomarker. Hence, we aimed to assess the predicting value of quantitative response of Tg in earlier identifying the RAIR-DTC with pulmonary metastasis. PATIENTS AND METHODS: Pulmonary metastatic DTC patients who underwent total or near-total thyroidectomy and at least two times of RAI therapy were included in this study...
2017: PloS One
https://www.readbyqxmd.com/read/28704342/a-novel-compact-small-field-of-view-hybrid-gamma-camera-first-clinical-results
#11
Aik H Ng, Patricia E Blackshaw, Mohammed S Alqahtani, Layal K Jambi, Sarah L Bugby, John E Lees, Alan C Perkins
INTRODUCTION: Hybrid imaging has proven to be a major innovation in nuclear medicine, allowing the fusion of functional information with anatomical detail. In the past, the use of hybrid imaging such as PET-CT, PET-MRI and SPECT-CT has been of great clinical benefit; however, these scanners are relatively large and bulky. We have developed and investigated the clinical application of a compact small field of view hybrid gamma camera (HGC) that is suitable for small-organ imaging at the patient bedside...
July 12, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28701709/psma-expression-by-microvasculature-of-thyroid-tumors-potential-implications-for-psma-theranostics
#12
Andrey Bychkov, Usanee Vutrapongwatana, Supatporn Tepmongkol, Somboon Keelawat
Prostate-specific membrane antigen (PSMA) is overexpressed in prostate cancer epithelium, making it a promising target for molecular imaging and therapy. Recently, several studies found unexpected PSMA radiotracer uptake by thyroid tumors, including radioiodine-refractory (RAIR) cancers. PSMA expression was reported in tumor-associated endothelium of various malignancies, however it has not been systematically addressed in thyroid tumors. We found that PSMA was frequently expressed in microvessels of thyroid tumors (120/267), but not in benign thyroid tissue...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28700384/update-on-graves-disease-advances-in-treatment-of-mild-moderate-and-severe-thyroid-eye-disease
#13
Diego Strianese
PURPOSE OF REVIEW: To report the most recent therapeutic advances of thyroid eye disease (TED) and offer general recommendations for management of TED. RECENT FINDINGS: Treatment of Graves ophthalmopathy is traditionally based on the use of high doses of corticosteroids and/or radiotherapy (RT) to decrease the activity of the disease, with the subsequent proptosis, strabismus and eyelid deformites treated with different surgical procedures. In recent years, the evidence that oxidative stress plays a relevant role in exacerbating TED severity has encouraged the use of antioxydative agents such as selenium, which has shown a capacity in limiting the disease progression...
July 11, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28699990/likelihood-of-malignancy-in-thyroid-nodules-according-to-a-proposed-thyroid-imaging-reporting-and-data-system-ti-rads-classification-merging-suspicious-and-benign-ultrasound-features
#14
Ricardo Luiz Costantin Delfim, Leticia Carrasco Garcez da Veiga, Ana Paula Aguiar Vidal, Flávia Paiva Proença Lobo Lopes, Mário Vaisman, Patrícia de Fatima Dos Santos Teixeira
Objective: The aim of this study was to describe the ultrasound features of benign and malignant thyroid nodules and evaluate the likelihood of malignancy associated with each feature according to the Bethesda System for Reporting Thyroid Cytopathology and histopathology. With this analysis, we propose a new TI-RADS classification system. Materials and methods: The likelihood of malignancy from ultrasound features were assessed in 1413 thyroid nodules according to the Bethesda System for Reporting Thyroid Cytopathology and histopathological findings...
May 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28699414/role-of-ultrasound-in-predicting-tumor-invasiveness-in-follicular-variant-of-papillary-thyroid-carcinoma
#15
Soo Yeon Hahn, Jung Hee Shin, Young Lyun Oh, Tae Hyuk Kim, Yaeji Lim, Ji Soo Choi
BACKGROUND: Follicular variant of papillary thyroid carcinoma (FVPTC) is traditionally divided into infiltrative and encapsulated types. Adding to this classification, noninvasive follicular thyroid neoplasm with papillary like nuclear features (NIFTP) represents a reclassification of a subset of cases (encapsulated tumors without lymphovascular or capsular invasion). The purpose of this study was to assess the role of ultrasound (US) in predicting tumor invasiveness in FVPTC. METHODS: From January 2014 to May 2016, preoperative US examinations were performed on 151 patients with 152 FVPTCs who underwent surgery...
July 12, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28696174/bilateral-lateral-ventricular-subependymoma-with-extensive-multiplicity-presenting-with-hemorrhage
#16
F M Moinuddin, Novita Ikbar Khairunnisa, Hirofumi Hirano, Tomoko Hanada, Tsubasa Hiraki, Mari Kirishima, Kiyohisa Kamimura, Kazunori Arita
This 48-year-old-man who had undergone right thyroid lobectomy for undifferentiated thyroid carcinoma nine years earlier developed generalized seizures. His cerebrospinal fluid was xanthochromic with elevation of total protein. Computed tomography (CT) showed mixed-density bilateral ventricular masses. Magnetic resonance imaging (MRI) revealed multiple nodules in both lateral ventricles; they were heterogeneously enhanced by gadolinium. Diffuse hyperintensity in the right medial temporal lobe and bilateral subependymal area was noted on fluid-attenuated inversion recovery images...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28695819/role-of-ultrasound-in-the-management-of-thyroid-nodules-and-thyroid-cancer
#17
Ruyu Liu, Bo Zhang
The management of thyroid nodules can be classified into narrow-and broad-sense levels. The broad-sense procedures are used for special population and include screening,risk assessment of thyroid nodules,follow-up of benign thyroid nodules,surgical operation,post-operative follow-up,and assessment and treatment of recurrence and/or metastasis of thyroid cancer. The narrow-sense procedures are for individual patients and the whole process includes the assessment,supervision,treatment,and reassessment of thyroid lesion...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28695342/thyroid-nodule-classification-in-ultrasound-images-by-fine-tuning-deep-convolutional-neural-network
#18
Jianning Chi, Ekta Walia, Paul Babyn, Jimmy Wang, Gary Groot, Mark Eramian
With many thyroid nodules being incidentally detected, it is important to identify as many malignant nodules as possible while excluding those that are highly likely to be benign from fine needle aspiration (FNA) biopsies or surgeries. This paper presents a computer-aided diagnosis (CAD) system for classifying thyroid nodules in ultrasound images. We use deep learning approach to extract features from thyroid ultrasound images. Ultrasound images are pre-processed to calibrate their scale and remove the artifacts...
July 10, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28694862/primary-hepatic-marginal-zone-lymphoma-in-a-patient-with-chronic-hepatitis-c
#19
George S Gherlan, Razvan Stoia, Mihaly Enyedi, Camelia Dobrea, Petre I Calistru
Extranodal marginal zone lymphoma of mucosa-associated lymphoid tissue (MALT) is a low-grade malignant lymphoma that appears frequently in the stomach, but other sites can also be involved: the intestinal tract, lungs, head, neck, skin, thyroid, breasts and liver. Recently, epidemiological evidences support the idea that there is an association between hepatitis C and B-cell non-Hodgkin lymphomas (that include MALT as a subtype). Primary non-Hodgkin lymphomas confi ned only to the liver are very rare (only 0...
September 2016: Mædica
https://www.readbyqxmd.com/read/28693291/diagnostic-clue-of-nodular-fasciitis-mimicking-metastasis-in-papillary-thyroid-cancer-mismatching-findings-on-18-f-fdg-pet-ct-and-123-i-whole-body-scan-a-case-report
#20
Minjung Seo, Misung Kim, Eun Sook Kim, Hongbo Sim, Sungmin Jun, Seol Hoon Park
This study reports a case of nodular fasciitis incidentally detected in a patient with papillary thyroid cancer. A 47-year-old woman underwent a total thyroidectomy and radioactive iodine therapy for papillary thyroid cancer. On a follow-up fluorodeoxyglucose ((18)F-FDG) PET/computed tomography (CT) scan after 12 months, a focal (18)F-FDG-avid lesion was incidentally detected in the paraspinal muscle. It was well-enhanced on CT and magnetic resonance imaging, indicating metastasis. However, the lesion was not iodine avid on the (123)I whole body scan, which favored benign etiology over metastasis from thyroid cancer...
July 2017: Oncology Letters
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