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...

Hypothyroidism is a clinical state of thyroid hormone deficiency that may have a primary or secondary (central) cause. Primary hypothyroidism, which is more common than secondary hypothyroidism, is defined as failure of the thyroid gland to respond appropriately to thyroid-stimulating hormone (TSH) produced in the anterior pituitary gland. Primary hypothyroidism can be caused by autoimmune dise...

Early investigations, both experimental and clinical, created the impression that the thyroid gland is relatively resistant to injury by ionizing radiation (86, 87). The results of the many studies carried out during the past decade, however, not only have reversed this view, but have, in fact, emphasized that destructive lesions of the gland can be readily produced in man and several species o...

PURPOSE To investigate the effect of total-body irradiation (TBI) on growth, thyroid and pituitary gland in primates. METHODS AND MATERIALS Thirty-seven rhesus monkeys (mean age 3.1+/-0.6 years) received either a low-dose (4-6 Gy) TBI (n = 26) or high-dose (7-12 Gy) TBI (n = 11) and were sacrificed together with 8 age-matched controls after a post-irradiation interval of 5.9+/-1.5 years. Anth...

OBJECTIVE The purpose of this study was to assess whether there were alterations in the thyroid hormone plasma levels under infrared laser irradiation, in the thyroid gland region. BACKGROUND DATA Studies have demonstrated that infrared laser can cause alterations in thyroid glands. METHODS Sixty-five albino male mice were used and assigned to five groups (n = 13), with differences in the t...

There are very few proliferating cells in the thyroid gland of normal adult rats, as measured by the labeling and mitotic index. One-tenth % 4-methyl-2-thiouracil in drinking water induced an exponential increase of thyroid weight after a lag phase of 2 days; the increase continued for 8 days and was followed by a plateau phase. The following sequence of events was found for the number of divid...

background: few studies have shown the limitation of the world health organization (who)/ international council for the control of iodine defi ciency (iccidd)-adopted thyroid gland volume references as universal normative values for thyroid gland volume. so we decided to measure thyroid gland volume by sonography in schoolchildren in rasht, gilan province, iran — rasht is a metropolitan city on...

thermal ablation therapies for benign thyroid nodules have been introduced in recent years to avoid the complications of traditional methods such as surgery. despite the little complications and the reportedly acceptable efficacy of thermal ablation methods, quite few medical centers have sought the potential benefits of employing them. this paper provides an introduction to the literature, pri...

Among soluble radioactive products of uranium nuclear fission entering a body iodine radioisotopes are the main radiation hazards. The impact selectively accumulated by thyroid on depends absorbed dose to gland, they can cause hypothyroidism or athyreosis. Athyreosis non-radiation origin is characterized metabolism decline, fatigue, bradycardia, cessation hair growth, roughness skin, alopecia, ...

A single dose of 8 or 20 Gy Co γ rays was given to C3H male mice at 4 months of age. The ultrastructural changes in mouse pituitary, thyroid and the adrenal gland due to brain irradiation were observed at 4 days to 18 months after irradiation. The pituitary microvasculature showed degenerative lesions including swollen endothelial cells and cytoplasmic blebs in the capillary sinusoids of all ir...