Estudo comparativo dos métodos de ultra-sonografia, tomografia computadorizada e ressonância magnética no estadiamento e invasão das estruturas adjacentes por tumores renais.

BACKGROUND: Ultrasonography (US), Computed Tomography (CT), and Magnetic Resonance imaging (MR) were compared for the staging of renal tumors. The differences between these imaging techniques were also studied for their ability to detect adenopathies, vascular invasion, distant intra-abdominal metastases, and particularly adjacent organ invasion. METHODS: Thirty-one patients with solid or complex renal masses were prospectively studied using US, CT, and MR. Differences between the results obtained were studied using the COCHRAN G test and the McNEMAR test. The sensitivity and specificity of each diagnostic technique were compared against a gold standard of the surgical and histopathological findings. RESULTS: The following sensitivities were obtained: For the detection of adenopathy, US 63.6%, CT and MR 90.9%. For vascular invasion, US 42.8%, CT and MR 85.7%. For the adjacent organ invasion, US 28.5%, CT 85.7%, and MR 71.4%. Some of the criteria that suggest invasion of adjacent structures include: the envelopment of the adjacent structures by the tumor, tumor extension into the adjacent structures with an irregular appearance, and alterations in shape, size, and density of adjacent structures. Loss of fat planes between the tumor and adjacent structures is not a sign of tumor invasion. CONCLUSIONS: Significant differences were found in the detection capacity of US in relation to CT and MR, which were similar. All three techniques were highly sensitive and specific only in the detection of distant abdominal metastases. In addition to the accuracy of these diagnostic modalities for the detection and staging of tumors, invasiveness, risks and cost should be considered in relation to relative costs and benefits.

Expressão dos filamentos intermediários no diagnóstico dos tumores mamários de cadelas

Immunohistochemical evaluation was performed to study the histogenesis of canine mammary tumors and to contribute to a better understanding of their classification. Monoclonal antibodies specific for different types of intermediate filaments (cytokeratins, vimentin, α-actin) were used. Epithelial cells stained positively for cytokeratins and their expression was lost as the malignant transformation occurs. Myoepithelial cells stained positively for vimentin and α-actin. In contrast to vimentin, α-actin lost the expression as the cartilaginous or osseous metaplasia occurs. Immunohistochemical evaluation with monoclonal antibodies proved to be efficient for identification of tumor histogenesis.

Expressão das caderinas nos tumores mamários em cadelas

Mammary tumors are among the most common neoplasia of canine females. The occurrence of metastasis may be detected by proteic markers. Among them, exist the E-cadherin, a member of cadherin family known for its important role in the regulation of intercellular adhesion in epithelial tissues. Studies suggest that E-cadherin may function as a tumor and invasion suppressor molecule. Cadherin activity is regulated by multiple mechanisms, including interaction with other proteins such as catenins. In this review, the authors approach the cadherin family and other related adhesion proteins including its function, physiopathology and potential use as marker for diagnosis and prognosis of canine mammary tumors.

Síndrome metabólica em mulheres na pós-menopausa tratadas de câncer de mama

PURPOSE: To assess the occurrence of metabolic syndrome (MetS) in postmenopausal breast cancer survivors. METHODS: A total of 158 breast cancer survivors were included in this cross-sectional study. Eligibility criteria were: women with amenorrhea >12 months and age ≥45 years, treated for breast cancer and no metastasis for at least five years. Clinical history and anthropometric indicator data (body mass index (BMI), and waist circumference, (WC) were collected. Biochemical parameters, including total cholesterol, HDL, LDL, triglycerides (TG), glucose and C-reactive protein (CRP), were measured. MetS was diagnosed as the presence of at least three of the following diagnostic criteria: WC>88 cm, blood pressure≥130/85 mmHg, triglycerides≥150 mg/dl, HDL <50 mg/dL,and glucose≥100 mg/dL. The Student's t-test and χ 2 test were used for statistical analysis. RESULTS: The mean age of breast cancer survivors was 63.1±8.6 years, with a mean follow-up of 9.1±4.0 years. MetS was diagnosed in 48.1% (76/158) and the most prevalent diagnostic criterion was abdominal obesity (WC>88 cm), affecting 54.4% (86/158) of the women. The patients without MetS had a longer follow-up compared those with MetS (p<0.05). Regarding the current BMI, PN average, those without MetS were overweight, and those with MetS were obese (p<0.05). Among the latter, comparison of BMI at the time of cancer diagnosis and current BMI (27.8±5.4 versus 33.4±5.4 kg/m2) showed a significant weight gain (p<0.05). Mean CRP values were higher in women with MetS (p<0.05). In the comparison of tumor characteristics and cancer treatments there was no difference between groups (p>0.05). CONCLUSION: Postmenopausal breast cancer survivors had a higher risk of developing metabolic syndrome and central obesity.

Hiperglicemia no perioperatório de pacientes pediátricos submetidos à ressecção de tumores do sistema nervoso central: incidência e prognóstico

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Metilação e expressão do gene BRCA1 em meningiomas

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Alterações de fluxos sanguíneos cerebrais regionais (FSCr) avaliados através de SPECT (Single Photon Emission Computed Tomography) em pacientes com câncer de mama submetidas à quimioterapia adjuvante

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Fusão da ressonância nuclear magnética e cintilografia mamária no carcinoma de mama localmente avançado. Análise da correlação entre os exames em pacientes submetidos à quimioterapia neoadjuvante

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Utilização do bisturi harmônico em mastectomias radicas para câncer de mama com comparação com o bisturi elétrico convencional

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Immunodetecção de marcadores de prognóstico em neoplasias mamárias de gatas: correlação dos padrões classificados

Pós-graduação em Ciência Animal - FMVA

Evolução do estado nutricional de mulheres com cânceres de mama, ovário ou útero e associação com a ingestão alimentar e sintomas gastrintestinais

Pós-graduação em Alimentos e Nutrição - FCFAR

Diagnóstico comparativo entre a histopatologia e citologia por capilaridade com agulha de insulina nas neoplasias mamárias caninas

Pós-graduação em Cirurgia Veterinária - FCAV

Associação entre fatores epidemiológicos e neoplasias mamárias em cadelas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Imunorreatividade da prostaglandina E2 relacionada a classificação histológica, estadiamento clínico e prognóstico de neoplasias mamárias em cadelas

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)