ectopic thyroid tissue (ett) is a rare entity and a challenging differential diagnosis. this is a report of a case of a mediastinal mass that was found to be an ectopic mediastinal thyroid tissue, in a 77-year-old woman who was admitted to our hospital for breast cancer management. the mediastinal mass was identified in the postsurgical computed tomography (ct) scan of the chest and was suspect...

Localization of 99mTc- hexakis-2-methoxyisobutylisonitrile (99mTc-MIBI) by parathyroid adenomas is well known, and this warrants MIBI scan to evaluate suspected parathyroid adenoma in primary hyperparathyroidism. Typically, the radionuclide concentrates in both the thyroid gland and parathyroid adenoma in early images, and later on delayed images washes out slowly from the...

An ectopic thyroid is a form of thyroid dysgenesis in which an entire or parts of the thyroid gland may be located in another part of the body than what is the usual place. The most frequent location is the base of tongue. Although most cases are asymptomatic, symptoms related to tumor size and its relationship with surrounding tissues, hormonal dysfunction and seldom malignancy may also occur....

The development of tumorous growths in the pituitary glands of mice following the injection of radioiodine and subsequent radiothyroidectomy was first reported by Gorbman (8), who reasoned that thyroid destruction was not the principal fac tor in the production of these growths, since pitui tary tumors had not been induced when the thy roid gland was chronically depressed by goitrogens. Later, ...

Although there is considerable controversy about the proper management of the solitary nodule, certain information may be useful in reaching this decision. Age, sex, and a previous history of external irradiation to the head and neck are helpful as are the clinical characteristics of the thyroid gland. Whether the nodule is functioning or "cold" on thyroid scan, and cystic or solid on thyroid u...

Thyroid diseases in children and adolescents include acquired or congenital conditions, including genetic disorders either isolated part of a syndrome. Briefly, we will review the physiology pathophysiology thyroid gland its disorders. The aim this chapter is to describe abnormalities gland.

Introduction: During treatment of breast cancer, Radiotherapy to the Supraclavicular fossa region results in absorption of radiation by the thyroid gland and consequently leads to hypothyroidism in 40% of patients. The aim of this study was to compare thyroid gland radiation absorption during radiotherapy with different anterior-posterior beam radiation of 6-15 and 15-15 MV pho...

introduction:  the use of radioactive iodine (131i) has become an important adjunct to the treatment of thyroid cancer and hyperthyroidism. salivary gland has the ability to concentrate radioactive iodine under normal circumstances. salivary gland dysfunction and dry mouth are the common side effectsof high-dose radioiodine therapy. the purposeof this study was to determine the absorbed dose of...

objectives we aimed to assess the prevalence of autoimmune thyroid disorders among patients with vitiligo who referred to sina hospital of hamadan in west of iran in 2008. patients and methods this case-control study comprised 45 patients with vitiligo and 45 healthy individuals (control group). data on age, gender, family history of vitiligo, distribution pattern and duration of the disease we...

 Seasonal changes of the thyroid gland structure and hormones secretion was examined in yellowfin seabream (Acanthopagrus latus) in the northwest of Persian Gulf (Musa creek). Thyroid gland composed of follicles scattered around the ventral aorta, near the gills. Follicular cells varied according to secretion of the gland during warm and cold seasons. Thyroid hormones (Triidothyronine [...