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Results for “THYROID NEOPLASMS”

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PubMed1991

Cytogenetic study of a nodular hyperplasia of the thyroid after irradiation for Hodgkin's disease.

We describe cytogenetics of a case of nodular hyperplasia of the thyroid with papillary microcarcinoma following radiotherapy for Hodgkin's disease. The chromosomal pattern found was very heterogeneous with a clonal abnormality of chromosome 10, among others. Together with some recent data from the literature, this finding may point to an important role of chromosome 10 abnormalities in the pathogenesis of benign and malignant thyroid neoplasms.

Adult↗
PubMed1975

Clinical aspects of thyrocalcitonin.

Thyrocalcitonin (TCT) is useful as a diagnostic and therapeutic agent in selected human diseases. Elevated plasma levels of TCT occur in patients with medullary carcinoma of the thyroid gland. Asymptomatic relatives of these patients harboring microscopic foci of tumor may have abnormal plasma levels of TCT in the basal state or after provocative stimuli. In both instances the plasma levels of TCT can be used in the diagnosis and management of this thyroid neoplasm. Elevated plasma levels of TCT have also been described recently in subjects with certain extrathyroidal neoplasms or renal failure. Moderate elevations are seen during normal pregnancy and in the neonatal period. Although exogenous TCT has actions on several organs, including bone, the kidneys and the gastrointestinal tract, its physiological role in man, if any, is still unknown. The recently reported measurements of TCT in normal subjects should facilitate the clarification of this issue. TCT has been used as a therapeutic agent in Paget's disease of bone, hypercalcemia of diverse etiologies, osteopenia and several other skeletal disorders. The dramatic improvement of patients with Paget's disease has been a unique therapeutic action of TCT. The therapeutic responses in hypercalcemic subjects given TCT are encouraging but more information is needed about the pharmacology of the hormones in these subjects before conclusions can be formed. At present the therapeutic role of TCT in osteopenia is hypothetical and the results of ongoing and future studies are needed to determine its effects.

Bone Diseases↗