Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 3 de 3
Filter
1.
Arq. bras. endocrinol. metab ; 57(4): 312-316, June 2013. tab
Article in English | LILACS | ID: lil-678146

ABSTRACT

OBJECTIVE: To evaluate the usefulness of preoperative serum calcitonin (sCT) in patients with nodular disease without suspicion of medullary thyroid carcinoma (MTC) in history or cytology. PATIENTS AND METHODS: sCT was measured before thyroidectomy in 494 patients with nodular disease who had no family history of MTC or multiple endocrine neoplasia type 2, and no cytological suspicion of MTC. RESULTS: Basal sCT was < 10 ng/mL in 482 patients and none of them had MTC. One patient with basal sCT > 100 pg/mL had MTC. Among the 11 patients with basal sCT between 10 and 100 pg/mL, MTC was diagnosed in only one. The two patients with MTC were submitted to total thyroidectomy, combined with elective lymph node dissection indicated exclusively based on hypercalcitoninemia, and sCT was undetectable after six months. CONCLUSIONS: Preoperative sCT is useful for the detection of sporadic MTC in patients with nodular disease, even in the absence of suspicious history or cytology.


OBJETIVO: Avaliar a utilidade da calcitonina sérica (sCT) pré-operatória em pacientes com doença nodular sem suspeita de carcinoma medular de tireoide (CMT) pela história e citologia. PACIENTES E MÉTODOS: Antes da tireoidectomia, sCT foi dosada em 494 pacientes com doença nodular, sem história familiar de CMT ou neoplasia endócrina múltipla tipo 2 e sem citologia suspeita para CMT. RESULTADOS: sCT basal foi < 10 ng/ml em 482 pacientes e nenhum possuía CMT. Um paciente com sCT basal > 100 pg/ml realmente possuía CMT. Dos 11 pacientes com sCT basal entre 10 e 100 pg/ml, CMT foi diagnosticado em apenas um. Os dois pacientes com CMT foram submetidos à tireoidectomia total com dissecção eletiva de linfonodos, indicada exclusivamente pela hipercalcitoninemia, e após seis meses apresentaram sCT indetectável. CONCLUSÕES: Em pacientes com doença nodular, mesmo sem história ou citologia suspeitas, a sCT pré-operatória é útil para detecção do CMT esporádico.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Female , Humans , Male , Middle Aged , Young Adult , Calcitonin/blood , Carcinoma, Medullary/blood , Thyroid Neoplasms/blood , Thyroid Nodule/blood , Biopsy, Fine-Needle , Biomarkers/blood , Carcinoma, Medullary/pathology , Luminescent Measurements/methods , Preoperative Care , Thyroid Neoplasms/pathology , Thyroid Nodule/pathology , Thyroidectomy/methods
2.
Arq. bras. endocrinol. metab ; 57(2): 144-147, Mar. 2013. tab
Article in English | LILACS | ID: lil-668752

ABSTRACT

OBJECTIVE: To evaluate 131I therapy in elderly patients with subclinical hyperthyroidism (SCH) due to nodular disease and who did not receive antithyroid drugs (ATDs), and the effect of the treatment on bone metabolism. SUBJECTS AND METHODS: Thirty-six patients with TSH ≤ 0.1 mIU/L and non-voluminous goiter (< 60 cm³) were studied. Bone mineral density (BMD) was assessed in 17 women with osteopenia. RESULTS: Mean 24-h 131I uptake was 17.5%. Symptoms of thyrotoxicosis were reported by two (5.5%) patients in the first week after therapy. One year after radioiodine treatment, SCH was resolved in 30 (83.3%) patients, and hypothyroidism was detected in one (2.7%). In the patients in whom TSH returned to normal, femoral and lumbar spine BMD increased by 1.9% and 1.6%, respectively, in average. CONCLUSIONS: In elderly patients with SCH and non-voluminous goiter, radioiodine not preceded by ATDs is a safe and effective therapeutic alternative. Resolution of SCH has beneficial effects on BMD in postmenopausal women with osteopenia.


OBJETIVO: Avaliar a terapia com 131I em idosos com hipertireoidismo subclínico (HSC) por doença nodular que não receberam drogas antitireoidianas (DATs) e o efeito no metabolismo ósseo. SUJEITOS E MÉTODOS: Trinta e seis pacientes com TSH ≤ 0,1 mUI/L e bócio não volumoso (< 60 cm³) foram estudados. Dezessete mulheres com osteopenia foram submetidas à avaliação da densidade mineral óssea (DMO). RESULTADOS: Captação média de 131I em 24 h foi 17,5%. Sintomas de tireotoxicose foram reportados por dois pacientes (5,5%) na primeira semana após a terapia. Um ano após o radioiodo, HSC foi resolvido em 30 pacientes (83,3%) e hipotireoidismo ocorreu em 1 (2,7%). Nas pacientes que normalizaram o TSH, DMO em fêmur e coluna lombar incrementou em média 1,9% e 1,6%, respectivamente. CONCLUSÕES: Em idosos com HSC e bócio não volumoso, radioiodo, não precedido de DATs, é uma alternativa terapêutica segura e eficaz. Resolução do HSC tem benefício na DMO em mulheres menopausadas com osteopenia.


Subject(s)
Aged , Aged, 80 and over , Female , Humans , Bone Density/radiation effects , Goiter, Nodular/radiotherapy , Hyperthyroidism/radiotherapy , Iodine Radioisotopes/therapeutic use , Goiter, Nodular/complications , Hyperthyroidism/etiology , Osteoporosis, Postmenopausal
3.
Arq. bras. endocrinol. metab ; 52(7): 1084-1095, out. 2008. ilus, tab
Article in Portuguese | LILACS | ID: lil-499718

ABSTRACT

A gravidez está associada com a necessidade aumentada de secreção hormonal pela tireóide desde as primeiras semanas após a concepção. Para que esta maior demanda ocorra, a gestação induz uma série de alterações fisiológicas que afetam a função tireoidiana e, portanto, os testes de avaliação da função glandular. Para as mulheres grávidas normais que vivem em áreas suficientes em iodo, este desafio em ajustar a liberação de hormônios tireoidianos para o novo estado de equilíbrio e manter até o término da gestação, geralmente, ocorre sem dificuldades. Entretanto, em mulheres com a capacidade funcional da tireóide prejudicada por alguma doença tireoidiana ou naquelas que residem em áreas de insuficiência iódica, isso não ocorre. O manejo de disfunções tireoidianas durante a gestação requer considerações especiais, pois tanto o hipotireoidismo quanto o hipertireoidismo podem levar a complicações maternas e fetais. Além disso, nódulos tireoidianos são detectados, com certa freqüência, em gestantes, o que pode gerar a necessidade do diagnóstico diferencial entre benignos e malignos ainda durante a gestação.


Pregnancy is associated with an increased requirement of hormone secretion by the thyroid, within the first weeks after conception. To this greater demand to occurs, pregnancy induces a series of physiological changes that affect thyroid function and, consequently, the tests of glandular function. For normal pregnant women living in areas with a sufficient supply of iodine, this challenge regarding the adjustment of thyroid hormone releases to this new state of equilibrium and its maintenance until the end of pregnancy it meets no difficulties. However, among women with impaired thyroid function due to some thyroid disease or among women residing in areas with an insufficient iodine supply, this does not occur. The management of thyroid dysfunction during gestation requires special considerations, since both hypothyroidism and hyperthyroidism can lead to maternal and fetal complications. In addition, thyroid nodules are detected at reasonable frequency among pregnant women, a fact that requires a differential diagnosis between benign and malignant growths during the pregnancy itself.


Subject(s)
Female , Humans , Pregnancy , Pregnancy Complications , Thyroid Diseases , Goiter, Nodular/diagnosis , Goiter, Nodular/physiopathology , Hyperthyroidism/diagnosis , Hyperthyroidism/physiopathology , Hyperthyroidism/therapy , Hypothyroidism/diagnosis , Hypothyroidism/physiopathology , Hypothyroidism/therapy , Iodine/deficiency , Pregnancy Complications/diagnosis , Pregnancy Complications/physiopathology , Thyroid Diseases/diagnosis , Thyroid Diseases/physiopathology , Thyroid Diseases/therapy , Thyroid Gland/metabolism , Thyroid Gland/physiopathology , Thyroid Hormones/metabolism , Thyroid Nodule/physiopathology
SELECTION OF CITATIONS
SEARCH DETAIL