Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 14 de 14
Filter
1.
Arq Bras Endocrinol Metabol ; 51(3): 488-93, 2007 Apr.
Article in Portuguese | MEDLINE | ID: mdl-17546250

ABSTRACT

Since the introduction of atypical antipsychotic medications, starting with clozapine in 1990, many studies have associated these drugs with the development of diabetes among other metabolic disorders, as well as with the onset of the disease as ketoacidosis. We report the case of a 28-year-old patient with schizophrenia who was admitted with diabetic acidosis 1 month after the beginning of clozapine therapy. No weight gain was reported and the patient maintains satisfactory glycemia levels with no treatment required after discontinuation of the drug. The literature on this subject and cases reported so far are reviewed, including the association of other atypical antipsychotic drugs also involved in endocrine disorders. The objective of this report is to raise the awareness of physicians treating psychiatric patients to the possibility of new-onset diabetes during therapy with atypical antipsychotic drugs and to emphasize the necessity for increased vigilance and close metabolic follow-up of these patients.


Subject(s)
Antipsychotic Agents/adverse effects , Clozapine/adverse effects , Diabetic Ketoacidosis/chemically induced , Body Mass Index , Diabetic Ketoacidosis/diagnosis , Female , Humans , Male
2.
Arq. bras. endocrinol. metab ; 51(3): 488-493, abr. 2007. tab
Article in Portuguese | LILACS | ID: lil-452192

ABSTRACT

Desde a introdução das medicações antipsicóticas atípicas, iniciando com a clozapina, em 1990, muitos relatos associam essas drogas ao desenvolvimento de diabetes mellitus, entre outros distúrbios metabólicos, assim como abertura da doença como cetoacidose. Relatamos o caso de um paciente de 28 anos, com esquizofrenia, admitido em cetoacidose diabética 1 mês após início da terapia com clozapina, sem relação com ganho de peso, mantendo-se com níveis satisfatórios de glicemia, sem tratamento, após suspensão da droga. Revisamos o assunto, com outros casos relatados até o momento, incluindo a associação de outros antipsicóticos atípicos igualmente envolvidos em distúrbios endócrinos. Objetivamos, com o relato deste caso, aumentar a atenção dos clínicos envolvidos no tratamento dos pacientes portadores de distúrbios psiquiátricos para a possibilidade do surgimento de diabetes durante a terapia, e enfatizar a necessidade de aumento da vigilância e do acompanhamento metabólico desses pacientes.


Since the introduction of atypical antipsychotic medications, starting with clozapine in 1990, many studies have associated these drugs with the development of diabetes among other metabolic disorders, as well as with the onset of the disease as ketoacidosis. We report the case of a 28-year-old patient with schizophrenia who was admitted with diabetic acidosis 1 month after the beginning of clozapine therapy. No weight gain was reported and the patient maintains satisfactory glycemia levels with no treatment required after discontinuation of the drug. The literature on this subject and cases reported so far are reviewed, including the association of other atypical antipsychotic drugs also involved in endocrine disorders. The objective of this report is to raise the awareness of physicians treating psychiatric patients to the possibility of new-onset diabetes during therapy with atypical antipsychotic drugs and to emphasize the necessity for increased vigilance and close metabolic follow-up of these patients.


Subject(s)
Female , Humans , Male , Antipsychotic Agents/adverse effects , Clozapine/adverse effects , Diabetic Ketoacidosis/chemically induced , Body Mass Index , Diabetic Ketoacidosis/diagnosis
3.
Arq. bras. endocrinol. metab ; 50(5): 909-913, out. 2006. tab
Article in Portuguese, English | LILACS | ID: lil-439073

ABSTRACT

Este estudo avaliou o seguimento de pacientes com câncer de tireóide de alto risco, após a terapia inicial. Foram selecionados 125 pacientes de alto risco (tumor >4 cm e/ou invasão extra-tireoidiana e/ou metástases linfonodais e idade >45 anos), com ressecção tumoral completa. Todos foram tratados com tireoidectomia total e ablação com 131I [3,7­5,5 GBq (100­150 mCi)] e foram excluídos 18 casos (14,8 por cento) com metástases na PCI pós-dose (t-PCI). O valor preditivo negativo da Tg estimulada <1 ng/ml combinada ao US cervical na primeira avaliação (6­12 meses após a terapia ablativa) foi de 96,2 por cento para ausência de recidivas em até 5 anos. Este valor aumentou para 98,7 por cento quando acrescentamos a PCI com 185 MBq (5 mCi) 131I (d-PCI). O valor preditivo positivo (VPP) da Tg estimulada >1 ng/ml foi de 52 por cento para presença de metástases detectadas até 5 anos depois, mas considerando apenas pacientes que apresentaram d-PCI e US negativos inicialmente, o VPP foi 19 por cento (9 por cento se Tg 1­10 ng/ml vs. 40 por cento se Tg >10 ng/ml). Tg reduziu espontaneamente nos pacientes com Tg estimulada >1 ng/ml na primeira avaliação, US e d-PCI negativos e sem recidiva no seguimento, sendo indetectável em metade destes ao final de 5 anos. No primeiro ano após a terapia ablativa, 20 pacientes tiveram captação em leito tireoidiano na d-PCI com Tg estimulada e US negativos e não foram tratados com 131I; estes evoluíram sem recidiva e 60 por cento apresentavam uma d-PCI sem nenhuma captação após 5 anos. Em pacientes sem doença aparente (no US e d-PCI) e Tg estimulada <1 ng/ml, a recidiva em 5 anos foi de apenas 1,3 por cento. Um algoritmo para o seguimento de pacientes de alto risco após a terapia inicial é apresentado por este estudo.


This study evaluated the follow-up of high-risk patients with thyroid cancer after initial therapy. A total of 125 high-risk patients (tumor >4 cm and/or extrathyroid invasion and/or lymph node metastases, and age >45 years), with complete resection of the tumor, were selected. All patients underwent total thyroidectomy and ablation with 131I [3.7­5.5 GBq (100-150 mCi)]. Eighteen patients (14.8 percent) presenting metastases on post-dose whole-body scan (RxWBS) were excluded. The negative predictive value of stimulated Tg <1 ng/ml in combination with neck US during first assessment (6­12 mo. after ablative therapy) was 96.2 percent for the absence of recurrence up to 5 years. This value increased to 98.7 percent when adding WBS performed with 185 MBq (5 mCi) 131I (DxWBS). The positive predictive value (PPV) of stimulated Tg >1 ng/ml was 52 percent for the detection of the presence of metastases up to 5 years; however, considering only patients with initially negative DxWBS and US, the PPV was 19 percent (9 percent if Tg of 1­10 ng/ml vs. 40 percent if Tg >10 ng/ml). Tg levels decreased spontaneously in patients with stimulated Tg >1 ng/ml during first assessment, negative US and DxWBS, and no recurrence during follow-up, with Tg being undetectable in half these patients at the end of 5 years. Twenty patients presented uptake in the thyroid bed upon DxWBS during the first year after ablative therapy, with stimulated Tg and US being negative, and were not treated with 131I; these patients did not relapse and no uptake on DxWBS was observed in 60 percent after 5 years. Recurrence after 5 years was only 1.3 percent in patients without apparent disease (negative US and DxWBS) and stimulated Tg <1 ng/ml. An algorithm for the follow-up of high-risk patients after initial therapy is presented in this study.


Subject(s)
Humans , Male , Female , Middle Aged , Adenocarcinoma, Follicular/surgery , Continuity of Patient Care , Carcinoma, Papillary/surgery , Thyroidectomy , Thyroid Neoplasms/surgery , Adenocarcinoma, Follicular/drug therapy , Catheter Ablation , Carcinoma, Papillary/drug therapy , Follow-Up Studies , Immunoradiometric Assay , Iodine Radioisotopes/therapeutic use , Lymphatic Metastasis , Neoplasm Recurrence, Local , Radiopharmaceuticals/therapeutic use , Treatment Outcome , Thyroglobulin/blood , Thyroid Neoplasms/drug therapy , Thyroxine/analogs & derivatives , Whole Body Imaging
4.
Arq. bras. endocrinol. metab ; 50(5): 930-933, out. 2006. tab
Article in English, Portuguese | LILACS | ID: lil-439077

ABSTRACT

RATIONALE: Since ovarian function is only temporarily compromised by radioiodine therapy, many women with thyroid cancer treated with radioiodine can become pregnant. The present study evaluated the evolution of these pregnancies and the consequences for the offspring. PATIENTS AND METHODS: We retrospectively analyzed 78 pregnancies of 66 women submitted to total thyroidectomy, followed by radioiodine therapy (3.7­5.5 GBq 131I, mean 4.64 GBq). In all patients, conception occurred one year after ablative therapy (mean of 30 months). Age ranged form 19 to 36 years (mean of 30.6 years) at the time of radioiodine treatment and from 23 to 39 years (mean of 32.8 years) at the time of conception. RESULTS: Four (5.1 percent) of the 78 pregnancies resulted in spontaneous abortions. Three (4 percent) of the 74 deliveries were preterm and there was no case of stillbirth. The birthweight was > 2500 g in 94.6 percent of the children (mean ± SD: 3350 ± 450 g) and only one infant (1.3 percent) presented an apparent malformation at birth (intraventricular communication). No difference in the age at the time of radioiodine therapy or conception or in radioiodine dose was observed between pregnancies with an unfavorable outcome and those with a favorable outcome. CONCLUSION: We conclude that pregnancies that occur 12 months after ablative therapy are safe.


ARRAZOADO: Uma vez que a função ovariana está apenas temporariamente comprometida pela terapia com radioiodo, muitas mulheres com câncer de tireóide tratadas com radioiodo podem engravidar. O presente estudo avaliou a evolução dessas gravidezes e suas conseqüências para a prole. PACIENTES E MÉTODOS: Analisamos retrospectivamente 78 gravidezes de 66 mulheres submetidas a tiroidectomia total seguida de radioiodoterapia (3,7­5,5 GBq 131I, média 4,64 GBq). Em todas, a concepção ocorreu um ano após a terapia ablativa (média de 30 meses). A idade variou de 19 a 36 anos (media de 30,6) à época do tratamento com radioiodo e de 23 a 39 anos (média de 32,8) na época da concepção. RESULTADOS: Quatro (5,1 por cento) das 78 gravidezes resultaram em abortamento espontâneo. Três (4 por cento) dos 74 partos foram pré-termo, mas não houve nenhum natimorto. O peso ao nascer foi >2.500 g em 94,6 por cento das crianças (média ± DP: 3.350 ± 450 g) e somente uma delas (1,3 por cento) apresentou uma malformação aparente ao nascimento (comunicação intraventricular). Nenhuma diferença quanto à idade na época da radioiodoterapia ou na concepção ou na dose de radioiodo foi observada entre as gravidezes com ou sem um desfecho favorável. CONCLUSÃO: Gravidezes que ocorrem 12 meses após terapia ablativa com radioiodo são seguras.


Subject(s)
Humans , Female , Pregnancy , Infant, Newborn , Abnormalities, Drug-Induced , Carcinoma/radiotherapy , Iodine Radioisotopes/adverse effects , Pregnancy Outcome , Pregnancy Complications, Neoplastic/chemically induced , Thyroid Neoplasms/radiotherapy , Abortion, Spontaneous/chemically induced , Carcinoma/surgery , Infant, Premature , Iodine Radioisotopes/therapeutic use , Ovary/radiation effects , Retrospective Studies , Thyroidectomy , Thyroid Neoplasms/surgery
5.
Arq Bras Endocrinol Metabol ; 50(1): 91-6, 2006 Feb.
Article in English | MEDLINE | ID: mdl-16628280

ABSTRACT

Thyroxine (T4) withdrawal or recombinant TSH is used for the stimulation of thyroglobulin (Tg), whole-body scanning (WBS) and iodine-131 treatment in patients with thyroid carcinoma. This study evaluated the T4 dose reduction protocol as an alternative for patients' preparation. Fifty-one patients were submitted to total T4 withdrawal for WBS and Tg measurement. T4 treatment was then resumed and maintained until TSH reached levels < 0.3 mIU/l. The T4 dose was then decreased to 0.8 microg/kg/day and TSH was measured weekly. Tg was assayed when TSH was > 30 mIU/l. Patients diagnosed with the disease upon initial evaluation were treated. We also evaluated the clinical and laboratory changes observed for both preparations. Using the reduced dose protocol, TSH levels > 30 mIU/l were reached within 6 and 8 weeks in 84.6 and 100% of the patients, respectively. T4 withdrawal was associated with more common symptoms of hypothyroidism and elevation of creatine kinase (CK) and LDL cholesterol. The T4 dose reduction protocol proved to be useful for Tg stimulation and ablative therapy, without the complication of severe hypothyroidism or the cost of recombinant TSH.


Subject(s)
Carcinoma/radiotherapy , Iodine Radioisotopes/therapeutic use , Thyroglobulin/blood , Thyroid Neoplasms/radiotherapy , Thyroxine/administration & dosage , Adult , Carcinoma/blood , Carcinoma/surgery , Case-Control Studies , Cholesterol, LDL/blood , Creatine Kinase/analysis , Creatine Kinase/blood , Female , Humans , Immunoradiometric Assay , Male , Middle Aged , Thyroglobulin/biosynthesis , Thyroid Neoplasms/blood , Thyroid Neoplasms/surgery , Thyroidectomy , Thyrotropin/blood , Thyroxine/adverse effects , Treatment Outcome , Whole Body Imaging
6.
Arq. bras. endocrinol. metab ; 50(1): 91-96, fev. 2006. tab
Article in English | LILACS | ID: lil-425464

ABSTRACT

A suspensão da tiroxina (T4) ou o TSH recombinante são usados para a estimulação da tireoglobulina (Tg), para o mapeamento de corpo inteiro (MCI) e para o tratamento com 131Iodo em pacientes com carcinoma tireoideano. Esse estudo avaliou um protocolo de redução de dose do T4 como alternativa para o preparo desses pacientes. Cinquenta e um pacientes submeteram-se à suspensão total de T4 para o MCI e a medida de Tg. Tratamento com T4 foi então reinstituído e mantido até que o TSH atingisse níveis < 0.3 mUI/l. A dose de T4 foi então dominuída para 0,8 µg/kg/dia e o TSH medido semanalmente. A Tg foi analisada quando o TSH estava > 30 mUI/l. Pacientes diagnosticados com a doença na fase inicial da avaliação foram tratados. Nós também avaliamos as alterações clínicas e laboratoriais observadas para ambos os preparos. Usando o protocolo de redução de dose, níveis de TSH > 30 mUI/l foram atingidos em 6 e 8 semanas em 84,6 and 100% dos pacientes, respectivamente. A suspensão do T4 esteve associada com sintomas mais comuns de hipotireoidismo e com elevação da creatino- quinase (CK) e LDL-colesterol. O protocolo de redução da dose de T4 mostrou-se útil para a estimulação da Tg e terapia ablativa, sem apresentar as complicações do hipotireoidismo severo ou chegar ao custo do TSH recombinante.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Carcinoma/radiotherapy , Iodine Radioisotopes/therapeutic use , Thyroglobulin/blood , Thyroid Neoplasms/radiotherapy , Thyroxine/administration & dosage , Case-Control Studies , Carcinoma/blood , Carcinoma/surgery , Cholesterol, LDL/blood , Creatine Kinase/analysis , Creatine Kinase/blood , Immunoradiometric Assay , Thyroidectomy , Treatment Outcome , Thyroglobulin/biosynthesis , Thyroid Neoplasms/blood , Thyroid Neoplasms/surgery , Thyroxine/adverse effects , Whole Body Imaging
7.
Arq. bras. endocrinol. metab ; 49(3): 350-358, jun. 2005. tab
Article in Portuguese | LILACS | ID: lil-409841

ABSTRACT

Os estudos que avaliaram a eficácia e segurança do TSH recombinante no preparo dos pacientes com carcinoma diferenciado de tireóide (CDT) para o tratamento ablativo e no seguimento com tireoglobulina sérica (Tg) e varredura de corpo inteiro com iodo-131 foram revisados neste artigo. No acompanhamento após a terapia inicial, o TSH recombinante é eficaz na geração da Tg e para realização da varredura de corpo inteiro com radioiodo e apresenta vantagens sobre o hipotireoidismo iatrogênico, poupando os pacientes dos sintomas de hipotireoidismo e da piora da qualidade de vida induzida pela suspensão da levotiroxina, resultando em menor exposição a um TSH elevado, e reduzindo o período de afastamento das atividades. TSH recombinante é a forma de preparo indicada para o diagnóstico de metástases, tanto em pacientes de baixo (Tg após TSH recombinante), quanto de moderado ou alto risco (Tg e varredura com iodo-131 após TSH recombinante). Para terapia ablativa, os resultados são promissores com a dose de 100mCi na ablação de remanescentes, mas o hipotireoidismo ainda é preferível, exceto em pacientes que não alcançam a elevação desejada do TSH após a retirada da levotiroxina, com doenças de base que são agravadas pelo hipotireoidismo agudo e severo (cardiopatia e doença pulmonar graves, coronariopatia, função renal comprometida, passado de psicose por mixedema), indivíduos debilitados por doença avançada e idosos. Os estudos também mostram que a administração do TSH recombinante é segura, com poucos efeitos adversos leves ou moderados.


Subject(s)
Humans , Carcinoma , Iodine Radioisotopes , Neoplasm Recurrence, Local , Thyroglobulin/blood , Thyroid Neoplasms , Thyrotropin/therapeutic use , Follow-Up Studies , Hypothyroidism/chemically induced , Neoplasm Recurrence, Local/blood , Thyroxine/administration & dosage , Whole-Body Counting
8.
Arq Bras Endocrinol Metabol ; 49(3): 350-8, 2005 Jun.
Article in Portuguese | MEDLINE | ID: mdl-16543988

ABSTRACT

The studies evaluating the efficacy and safety of recombinant TSH in the ablative therapy and follow-up of patients with differentiated thyroid carcinoma by serum thyroglobulin (Tg) measurement and iodine scanning were reviewed in this article. Recombinant TSH is comparable to hypothyroidism in the generation of Tg and in the execution of iodine-131 whole-body scanning, with the advantage of sparing patients from the symptoms of hypothyroidism and from impaired quality of life induced by levothyroxine withdrawal, in addition to a reduced exposure to elevated TSH and shorter absence from work, with recombinant TSH being the preparation indicated for the diagnosis of metastases in both low risk (Tg after recombinant TSH) and moderate or high risk patients (Tg and iodine-131 scanning after recombinant TSH). In the case of ablative therapy, the results are promising when using a dose of 100 mCi for remnant ablation, but hypothyroidism is still preferred, except for patients in whom the desired TSH elevation after levothyroxine withdrawal is not achieved, patients with base diseases that are aggravated by acute and severe hypothyroidism (severe heart and lung disease, coronary disease, compromised renal function, history of psychosis due to myxedema), patients debilitated by advanced disease, and elderly individuals. The studies also show that the administration of recombinant TSH is safe, with few mild or moderate adverse effects.


Subject(s)
Carcinoma/diagnostic imaging , Iodine Radioisotopes , Neoplasm Recurrence, Local/diagnostic imaging , Thyroglobulin/blood , Thyroid Neoplasms/diagnostic imaging , Thyrotropin/therapeutic use , Carcinoma/blood , Follow-Up Studies , Humans , Hypothyroidism/chemically induced , Neoplasm Recurrence, Local/blood , Radionuclide Imaging , Thyroid Neoplasms/blood , Thyroxine/administration & dosage , Whole-Body Counting
9.
Arq. bras. endocrinol. metab ; 48(6): 855-860, dez. 2004. tab
Article in Portuguese | LILACS | ID: lil-393745

ABSTRACT

Avaliamos, retrospectivamente, a recorrência, presença de metástases distantes e mortalidade em 78 pacientes com microcarcinoma papilífero seguidos durante 6,8 anos, em média. Dos 56 pacientes com tumor unifocal sem metástases, nenhum apresentou recorrência, independente do tratamento (22 loboistmectomia, 11 tireoidectomia total sem ablação e 23 com ablação). O mesmo ocorreu nos 15 casos de tumor multicêntrico restrito à tireóide e tratados com tireoidectomia total e radioiodo. Dos 7 casos com metástases na apresentação inicial e submetidos a cirurgia extensa e terapia ablativa, recorrência cervical ocorreu em apenas 1 paciente. A presença de anticorpos anti-tireoglobulina foi mais comum após a lobectomia (22,7 por cento vs. 9 por cento) e a especificidade da tireoglobulina (Tg) ficou comprometida com este procedimento, mas não nos pacientes com tireoidectomia total sem ablação. Observou-se dois casos de hipoparatireoidismo definitivo no gruposubmetido à tireoidectomia total (3,5 por cento) e nenhum com lobectomia. O presente estudo concorda que a loboistmectomia pode ser suficiente para o tratamento do microcarcinoma papilífero único restrito à tireóide. No entanto, a especificidade da Tg no seguimento fica comprometida. Para tumores multicêntricos ou com linfonodos acometidos, recomenda-se a tireoidectomia total, mas o uso rotineiro da radioiodoterapia é controvertido.


Subject(s)
Female , Humans , Male , Middle Aged , Carcinoma, Papillary/therapy , Thyroid Neoplasms/therapy , Carcinoma, Papillary/epidemiology , Carcinoma, Papillary/secondary , Retrospective Studies
10.
Arq. bras. endocrinol. metab ; 48(6): 861-866, dez. 2004. graf
Article in Portuguese | LILACS | ID: lil-393746

ABSTRACT

Avaliamos 58 pacientes com metástases distantes de carcinoma de tireóide diagnosticadas após a terapia inicial. Metástases linfonodais na apresentação inicial foram verificadas em 65 por cento. Todas as metástases linfonodais, 90 por cento das pulmonares e apenas 25 por cento das metástases ósseas eram assintomáticas. Radiografia revelou metástases líticas em todos os casos com acometimento ósseo; foi normal em 39,6 por cento, mostrou micrometástases em 34,5 por cento e macrometástases em 25,8 por cento nos pacientes com doença pulmonar. A tireoglobulina (Tg) em uso de tiroxina foi detectável (> 1ng/ml) em todos sem anticorpos anti-tireoglobulina (TgAb), > 5ng/ml em 90 por cento e > 10ng/ml em 80 por cento e, após a suspensão da terapia, > 5ng/ml em 100 por cento e > 10ng/ml em 94 por cento. Nos pacientes com TgAb (13,8 por cento), Tg foi indetectável em metade. Varredura diagnóstica com 5mCi de iodo 131 foi positiva em 83 por cento e 77,6 por cento dos pacientes com metástases ósseas e pulmonares, respectivamente e após dose ablativa, a sensibilidade foi de 100 e 93 por cento. Dos pacientes com varredura diagnóstica negativa, 85 por cento tinham metástases pulmonares visíveis na radiografia. Concluímos que a Tg é o método mais sensível, seguro e de menor custo no seguimento de câncer diferenciado de tireóide, e reforçamos a administração direta de uma dose ablativa de radioiodo com realização de varredura pós-dose quando a Tg estiver elevada.


Subject(s)
Adolescent , Adult , Aged , Child , Female , Humans , Male , Middle Aged , Bone Neoplasms/diagnosis , Bone Neoplasms/secondary , Carcinoma/diagnosis , Carcinoma/secondary , Lung Neoplasms/diagnosis , Lung Neoplasms/secondary , Thyroid Neoplasms/pathology , Carcinoma/therapy , Retrospective Studies , Thyroid Neoplasms/therapy
12.
Arq Bras Endocrinol Metabol ; 48(6): 855-60, 2004 Dec.
Article in Portuguese | MEDLINE | ID: mdl-15761560

ABSTRACT

We retrospectively analyzed the recurrence, distant metastases and mortality of 78 patients with papillary microcarcinoma during a mean period of 6.8 years. None of the 56 patients with unifocal tumors without metastases relapsed, irrespective of the type of treatment (22 submitted to lobectomy, 11 to total thyroidectomy without ablation and 23 with ablation). The same occurred for the 15 cases of multicentric tumors restricted to the thyroid and treated with total thyroidectomy and radioiodine. Of the 7 patients with metastases in the initial presentation and treated with extensive surgery and ablative therapy, cervical recurrence was observed in 1 case. Detectable anti-thyroglobulin antibodies were more common after lobectomy (22.7% vs. 9%) and the specificity of thyroglobulin was compromised by this procedure, but not in patients submitted to total thyroidectomy without ablation. Two cases of definitive hypoparathyroidism were observed in the group submitted to total thyroidectomy (3.5%) and no cases with lobectomy. The present study agrees that lobectomy can be sufficient for the treatment of single microcarcinoma restricted to the thyroid. However, the Tg specificity is compromised. Total thyroidectomy is recommended for multicentric tumors or with lymph nodes metastases, but the routine use of radioiodine is a matter of controversy.


Subject(s)
Carcinoma, Papillary/therapy , Thyroid Neoplasms/therapy , Carcinoma, Papillary/epidemiology , Carcinoma, Papillary/secondary , Female , Humans , Male , Middle Aged , Retrospective Studies
13.
Arq Bras Endocrinol Metabol ; 48(6): 861-6, 2004 Dec.
Article in Portuguese | MEDLINE | ID: mdl-15761561

ABSTRACT

We studied 58 patients with distant metastases of differentiated thyroid carcinoma diagnosed after initial therapy. Lymph node metastases were observed in 65% of the patients on initial presentation. All lymph node metastases, ninety percent of the lung metastases and only 25% of the bone metastases were asymptomatic. Radiography revealed lytic metastases in cases of bone involvement, was normal in 39.6% of the patients, and showed micrometastases in 34.5% and macrometastases in 25.8% of the patients with lung disease. Thyroglobulin (Tg) under thyroxine use was detectable in all patients without antibodies at a cut-off > 1 ng/ml, in 90% at > 5 ng/ml and in 80% at > 10 ng/ml, and after thyroxine withdrawal in 100% at a cut-off > 5 ng/ml and in 94% at > 10 ng/ml. In the case of patients with antibodies (13.8%), Tg was undetectable in half of them. Diagnostic scanning was positive in 83 and 77.6% of the patients with bone and lung metastases, respectively. After ablative therapy, the sensitivity was 100 and 93%, respectively. Eighty-five percent of patients with a negative diagnostic scan had lung metastases visible on radiographs. The determination of serum Tg is the best method in the follow-up of patients with differentiated thyroid cancer. Elevated Tg levels suggest the presence of metastases, indicating the need for ablative therapy with posttreatment scanning, which might reveal non-apparent metastases.


Subject(s)
Bone Neoplasms/diagnosis , Bone Neoplasms/secondary , Carcinoma/diagnosis , Carcinoma/secondary , Lung Neoplasms/diagnosis , Lung Neoplasms/secondary , Thyroid Neoplasms/pathology , Adolescent , Adult , Aged , Carcinoma/therapy , Child , Female , Humans , Male , Middle Aged , Retrospective Studies , Thyroid Neoplasms/therapy
SELECTION OF CITATIONS
SEARCH DETAIL
...