Active clinical trials for "Thyroid Neoplasms"

The aim of this study is to identify which ultrasonographic feature or a combination of features is the best predictor of thyroid cancer in thyroid nodules.

Flight attendants may be at an increased risk of breast and other cancers due to work-place exposures including cosmic radiation and circadian rhythm disruption form traveling across multiple time zones. This cancer incidence study will determine whether female flight attendants are at increased risk of breast and other cancers and whether the risk is dose-related. The study will include a cohort of approximately 10,000 women who were employed as flight attendants for one or more years. Breast cancer cases will be identified from telephone interviews of living subjects and next-of-kin of deceased subjects, as well as from death certificates. The interview will also provide information about non-occupational risk factors for breast cancer such as parity. Both internal and external comparisons will be made. The primary analysis will evaluate the risk associated with occupational exposure within the cohort, controlling for non-occupational risk factors by stratification or modeling. The secondary analysis will compare the incidence of breast cancer in the cohort to that in the general population, with adjustment for factors such as lower parity which might increase breast cancer risk in the cohort independent of occupational exposure to cosmic radiation and circadian rhythm disruption. The risk of other ionizing radiation-related cancers, such as leukemia, lung cancer, and thyroid cancer, among flight attendants will also be evaluated. The results of the study will apply to female flight crew and frequent fliers.

The purpose of this study is to investigate the relationship between prognosis and fine needle aspiration cytology character of papillary thyroid cancer.

In this registry it is planned to include all Belgian patients diagnosed with aggressive and symptomatic unresectable locally advanced or metastatic Medullary Thyroid Cancer (MTC) who have been prescribed Caprelsa® (vandetanib). The characteristics of patients receiving Caprelsa® (vandetanib) will be described. Therefore real life data regarding demographic characteristics, evolution of the disease, RET mutation status, the treatment before, during and after vandetanib, dose and duration of treatment with Caprelsa® (vandetanib) and time of progression or death (if applicable) will be included.

The radioactive radioiodine therapy (Na131I) for the treatment of differentiated thyroid carcinoma is a procedure used for ablation of remaining thyroid tissue after thyroidectomy and metastases. Although serious complications are uncommon after treatment, there are well-documented adverse reactions secondary to the involvement of the salivary glands, such as dry mouth, pain in the parotid glands and dysphagia, even after administration of low doses of radioiodine. However, ocular complications of such treatment are scarcely reported in literature. Among them the investigators can mention recurrent and chronic conjunctivitis, keratoconjunctivitis sicca and dry eye, affecting 23% of patients undergoing radioactive iodine therapy. Dysfunction of the lacrimal gland is described in recent studies, especially after high cumulative dose of the drug. Likewise, epiphora and nasolacrimal duct obstruction have been reported as complications associated with the use of radioiodine, although studies are not available to assess its true incidence through the systematic evaluation of patients. It can be seen in routine practice that these patients would normally be referred for ophthalmological examination only if a complaint, what happens in the process of OVL already installed after the use of high doses of radioiodine. With the early evaluation of these patients, the investigators focused on detecting the process of ongoing obstruction in order to study interventions that prevent its final installation.

The endoscopic thyroidectomy approach is gaining popularity in the surgical field. This registry tries to collect the outcomes including quality of life and complication for both endoscopic and conventional thyroidectomy methods.

This study evaluates the usefulness of molecular classifier to aid the diagnosis of malignancy in the material obtained by fine-needle aspiration biopsy (FNAB) of thyroid nodule. All participants will undergo FNAB with routine cytological assessment and molecular testing. Patients will undergo surgery or be followed-up, according to the clinical guidelines. The diagnostic power of combined molecular/clinical classifier will be compared to prediction based on clinical features only, by investigators blinded to the final diagnosis of surgical assessment.

The main purpose of the study is to establish a relationship between the administered activity of the radioiodine and absorbed dose in the tumor sites.

The purpose of this study is to describe the correlation between the cytohistology exam of patients undergoing thyroid surgery, and the predictive values of: suspicious clinical findings, preoperative thyroid imaging, and the incidence of thyroid cancer in cytologically negative nodes.

To investigate the diagnostic efficiency of pyrosequencing for the mutant BRAF allele in ultrasound (US)-guided fine needle aspiration biopsies (FNAB) of thyroid incidentalomas.