Active clinical trials for "Thyroid Diseases"

The incidence rates of thyroid cancers have increased in the past decade. Additionally, up to 68% of people have thyroid nodules. Consequently, a precise evaluation of thyroid nodules is very important and can avoid unnecessary biopsy of benign nodules. Shear wave elastography(SWE), a novel ultrasound-based elastographic method, is a new real-time, quantitative, operator-independent, and reproducible technique. Briefly, shear wave elastography uses a radiation force produced by an ultrasonic beam to stress tissues and ultrafast sonographic tracking techniques to measure the speed of shear waves. Based on the Young modulus formula, tissue elasticity can be derived from the shear wave propagation speed, and a real-time color-coded elastogram can be displayed, showing softer tissue in blue and stiffer tissue in red. There are lots of research confirmed that SWE has a certain value in the diagnosis of thyroid carcinoma. These studies include prospective studies and retrospective studies, but both belong to a single center study. It has not been applied to the study of the multicenter of thyroid disease. The main purpose of the study is to assess the performance of SWE for identification of benign and malignant thyroid nodules and calculate the optimal cutoff value for each parameter in multicenter study; the secondary purpose is to evaluate the application value of SWE for uncertain nodules by FNA.

For patients with thyroid gland nodule, fine-needle aspiration biopsy has been proved to be an efficient tool for thyroid cancer diagnosis. However, it is somewhat an invasive procedure and is subject to sampling and analysis uncertainties. Thus, improved, more reliable criteria for determining which nodule should be be aspirated are needed. Ultrasound elastography has been shown to be useful in the differential diagnosis of breast and prostate cancers. Ultrasound elastography also may discriminate malignant from benign nodule.

A descriptive analysis involving 300 healthy pregnant women to the establish of trimester-specific reference ranges for thyroid tests in pregnant women. 700 cases were selected as the normal pregnant population to establish a self-sequential longitudinal reference range.

Bone radioiodine (RAI) uptake without structural abnormality in thyroid cancer (TC) patients may be related to false positive or to microscopic foci of metastatic tissue. In such cases, outcome is reported to be excellent. Indeed, Robenshtok et al. reported a serie of patients with RAI-avid bone metastases of TC without structural abnormality on imaging studies who have more favorable long-term prognosis than those harbouring structurally visible bone metastases and do not undergo skeletal-related complications. The investigators report the case of Mrs D., who had been operated for a pathologic tumor stage 3: pT3(m) poorly differentiated TC at the age of 43. The first post-therapeutic whole body scan revealed 3 foci of bone uptake (right clavicle, L2, L3). The elevated level of thyroglobulin (157ng/mL) favoured the hypothesis of bone metastases despite the absence of any structural lesion on CT and MRI. She received 7 courses of radioiodine therapy. The right clavicle RAI uptake persisted, and subsequent CT disclosed an osteolytic lesion which was treated by radiofrequency and external beam radiation. Twenty-five years after the diagnosis, she has a persistent morphological disease with a 30x8mm progressive lesion on the right clavicle, for which surgery is planned. The aim of the present study is to describe the natural history and evolution of radioiodine avid bone metastases from thyroid cancer without structural abnormalities and to identify prognosis factors.

Case control on thyroid cancer occuring in a cohort of 7300 subjects treated during their childhood, mostly by radiotherapy, for a skin Angioma at Gustave Roussy, Villejuif France between 1947 and 1973. This case control study, which is included in a larger european project, aims to investigate the DNA variant interacting with the risk of radiation induced thyroid cancer after irradiation. The sutdy is planed to include about 30 cases and 30 controls. Matching criteria are date of birth, gender, and age at irradiation.

The purpose of this study is to evaluate the accuracy of Thyroscan in the differential diagnosis of benign and malignant thyroid nodules with suspecious ultrasound features

The investigators' aim is to enroll around 2000 patients from Taipei, Keelung, Linkou, Chiayi and Kaohsiung CGMH. All participants will receive universal thyroid function screening at 1st trimester, and those who was found to have hyperthyroidism or hypothyroidism will be referred to Endocrine department for further treatment. All participants will be followed at outpatient clinic, and their obstetric visit finding will be recorded. The maternal and neonatal outcomes will be analyzed.

Since 2017, a revolution began in the departments of nuclear medicine, with the routine use of gamma-cameras with semiconductor. These gamma-cameras (which obtained the CE-marking in 2016), offer a technological breakthrough by providing an additional information. They allow "to quantify" for the 1st time in clinical routine conditions, the quantity of radioactivity, by means of a "SUVspect", in a volume of interest, while respecting the recommendations of best practice of the learned societies of French nuclear medicine (SFMN), European (EANM) and American (SNM), without injection of tracer nor acquisition or additional irradiation. The SUVspect is therefore an indicator of the quantity of tracer in a given volume of acquisition. Until now, the interpretation criteria of scintigraphies are based on the homogeneity of distribution of a tracer in the explored organ (for single organs such as the heart or the thyroid, for example) or in the asymmetry of distribution of the tracer (for the double organs, such as the kidney or the joints). This new gamma-camera allows to study the distribution of the radio-tracers in "list" mode, allowing to retrospectively reconstruct the images in various ways (for example, by modifying the size of the matrix of acquisition, the energy windows, the time of acquisition). Therefore, we can simulate and propose modifications in current procedures. Every patient referred to our department of nuclear medicine to undergo a scintigraphy with a tracer of nuclear medicine (with a marketing authorization) can, while benefiting from an examination by this gamma-camera, to be the object of this study, and to profit from this additional information. So, without changing the diagnosis or the usual care, we wish to take advantage of this additional information to improve the criteria of interpretation of our examinations. This possibility being new, there is no available bibliography (our department is the 5th department of nuclear medicine in Europe to equip itself with this large field-of-view gamma-camera CZT, the DNM 670, made by General Electric), while 2961 articles speak about the SUVmax (in PET) in Pubmed.

The application of computer-aided diagnosis (CAD) technology "S-DetectTM" enables qualitative and quantitative automated analysis of ultrasound images to obtain objective, repeatable and more accurate diagnostic results. The Elastic Contrast Factor (ECI) technique, unlike conventional strain-elastic imaging techniques, can evaluate the elastic distribution in the region of interest. The purpose of the study was to evaluate the differential diagnosis value of ultrasound S-DetectTM technology for benign and malignant thyroid nodules and evaluate the consistency of ultrasound S-DetectTM technology and sonographer in the differential diagnosis of thyroid nodules and explore the differential diagnosis value of Samsung ultrasound ECI technology for benign and malignant thyroid nodules.

Papillary thyroid microcarcinoma are small thyroid cancer measuring 1cm or less. Most of this tumor are not palpable and are identified either through pathologic examination or from imaging modalities, such as CT scan or thyroid sono. Active surveillance of papillary microcarcinoma is to observe thyroid papillary cancer without immediate surgical approach. The purpose of this study is to understand more about the characteristics of papillary microcarcinoma, which has been known for "the cancer slowly progression"