نتایج جستجو برای: thyroid ultrasonography
تعداد نتایج: 125103 فیلتر نتایج به سال:
BACKGROUND Sorafenib is a multi-targeted tyrosine kinase inhibitor licensed for the treatment of hepatocellular carcinoma and renal cell carcinoma. Thyroid function test abnormalities have been reported for different tyrosine kinase inhibitors, but only limited data on thyroid function test abnormalities related to sorafenib are available, demonstrating the occurrence of hypothyroidism in patie...
Medullary thyroid carcinoma (MTC) is a rare cause of chronic diarrhea. When systemic symptoms such as diarrhea occur, distal metastasis often exists. The most common clinical presentation of MTC is solitary thyroid nodule. It was uncommon that chronic diarrhea as initial presentation of MTC without visible thyroid nodule. A 66-year-old woman suffered from watery diarrhea for 4 months. Irritable...
The evaluation and management of thyroid nodules remains an area of controversy. The past decade has witnessed two important advances. The increased availability and acceptance of fine-needle aspiration biopsy of thyroid nodules has dramatically altered the clinician's approach to this disease, and provides for the single most precise method for selecting appropriate patients for surgery. The i...
Thyroid is particularly prone to morphogenetic variability. Developmental failure of the thyroid gland is in 85% of cases the underlying cause of congenital hypothyroidism, diagnosed at birth with a frequency of 1:3000-1:4000 newborns. However, the incidence of less severe developmental variants of the thyroid is much higher. Determination of the aetiology of congenital hypothyroidism is crucia...
Intrathyroidal thymic tissue is rare and may be confused with a malignant thyroid nodule because of hyperechoic dots mimicking calcifications. We report the case of a thyroid nodule with malignant ultrasonographic findings in a 4-year-old child, which was confirmed cytologically as ectopic thymic tissue. The sonographic findings of ectopic thymus were similar to those of the thymus; therefore, ...
Introduction: Extraosseous accumulation of 99mTc – methylene diphosphonate (MDP) may be due to neoplastic, dystrophic, hormonal, inflammatory, ischemic, traumatic or excretory disorders. 99mTc-MDP incidental thyroid uptake is not frequent and is possibly caused by the presence of dystrophic or metastatic calcification, biopsy procedure and presence of beni...
Multinodular goitre is the most prevalent thyroid pathological abnormality worldwide, although its geographical incidence varies greatly according to environmental iodization Most countries in central and southern Europe have endemic goitre areas with a prevalence of multinodular goitre (MG) of 3-6%. In United States, the annual incidence of nodular thyroid disease is 0.1% to 1.5% and the preva...
AIM To compare the urine iodine, fluoride, and to measure thyroid volumes in 10-15-year-old children using ultrasonography, a gold standard in evaluating thyroid volume. METHODS A total of 261 children were enrolled into the study group from the 4-8th grades of 3 different primary schools, which were in the zone with high fluoride levels. The control group was formed by enrolling 298 children...
Ultrasonography (US) features of thyroid nodules can be helpful in identifying those most at risk for malignancy; these include marked hypoechogenicity, microcalcifications, irregular margins, and a taller-than-wide shape (nonparallel orientation). Some cystic change morphologically after simple aspiration percutaneous ethanol injection treatment. They show hypoechogenicity margins on the US di...
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