ABSTRACT
Objetivos: Detectar a presença de invasão vascular nas biópsias por agulha grossa de carcinoma demama por meio da técnica IHQ (IHQ) com duplo marcador (CD34-pancitoqueratina AE1/AE3);analisar a sensibilidade, a especificidade, o valor preditivo positivo (VPP) e o valor preditivo negativo(VPN) com essa técnica e comparar a acurácia do duplo marcador com a técnica da hematoxilinaeosina(H&E). Métodos: Cortes histológicos de 74 casos de biópsias por agulha grossa de pacientescom câncer de mama foram submetidos à coloração por IHQ com duplo marcador e coloração porH&E. Como grupo-controle, utilizou-se os resultados anatomopatológicos das cirurgias. Resultados:Invasão vascular ocorreu em 34 casos (45,9%). O teste H&E demonstrou valores superiores à IHQquanto a sensibilidade, especificidade, VPP e VPN. Apenas em casos sem metástases axilares, a especificidadefoi superior no teste com IHQ. Conclusão: O teste com maior acurácia para a detecção deinvasão vascular nas biópsias foi o da coloração por H&E. Nos casos sem metástases axilares, o duplomarcador mostrou-se superior somente quanto à especificidade. Por causa da escassez de material dasbiópsias, a principal suposição é que, no material proveniente das cirurgias, que é mais representativo,ou em biópsias com maior número de fragmentos, o duplo marcador tenha melhores resultados.
Purposes: To detect blood vessel invasion in breast cancer core-biopsies through the immunohistochemicaldouble staining technique (CD34 and pancytokeratin AE1/AE3); to analyze the sensitivity, specificity, positivepredictive value and negative predictive value of this technique and to compare the accuracy of double stainingwith the hematoxylin-eosin technique. Methods: 74 specimens of breast cancer core-biopsies were analyzed.Core-biopsy specimens were stained with immunohistochemical (IHC) double staining and with hematoxylineosin(H&E) in different slides for blood vessel invasion research. For the control group, we used anatomopathologicalresults from previous surgeries. Results: 34 patients (45.9%) presented blood vessel invasion. The H&Etest showed better results of sensitivity, specificity, positive predictive value (PPV) and negative predictive value(NPV). Only in cases without metastatic axillary lymph node, specificity was higher in the ICH test. Conclusion:The H&E is the most accurate method to the detection of blood invasion in core-biopsies breast cancer. Incases without metastatic axillary lymph node, IHC double staining proved to be superior regarding specificity.Considering the low density of core-biopsy specimens, our hypothesis is that IHC double staining would be thebest choice when used in specimens of surgeries or in core-biopsy with abundant sample of tissue.
Subject(s)
Humans , Female , Biopsy, Needle/methods , Carcinoma/diagnosis , Carcinoma/blood supply , Breast Neoplasms/diagnosis , Breast Neoplasms/prevention & control , Eosine Yellowish-(YS) , Hematoxylin , Immunohistochemistry , Predictive Value of TestsABSTRACT
BACKGROUND/AIMS: Phosphatase and tensin homolog deleted on chromosome ten (PTEN) is a recently clarified tumor suppressor gene located in 10q23.3. Alterations of this gene are associated with tumor progression and unfavorable outcome in various human cancers. Recently, PTEN has a possible role in angiogenesis by modulating angiogenic factor including vascular endothelial growth factor (VEGF). The aim of this study was to investigate the roles of PTEN and VEGF status for angiogenesis in human gastric cancer. METHODS: We conducted an immunohistochemical investigation of PTEN and VEGF expression in 90 cases of paraffin section obtained from gastric cancer patients undergone surgical treatment. RESULTS: Negative expression of PTEN and positive expression of VEGF in gastric cancer tissues, were demonstrated in 40.0% and 77.8% of cases, respectively. However, no significant correlation was found between PTEN, VEGF expression and various clinicopathological parameters. PTEN expression did not correlate significantly with VEGF expression (p=0.301). High microvessel density (MVD) was significantly associated with lymph node metastasis and poor survival (p=0.014, 0.011, respectively). The mean MVD value of PTEN negative tumors was 90.4+/-43.0 and significantly higher than that of PTEN positive tumors (p=0.028). The mean MVD value of VEGF positive tumors was 86.4+/-36.7 and significantly higher than that of VEGF negative tumors (p=0.002). The mean MVD value of PTEN negative and VEGF positive tumors was 98.0+/-42.2, and significantly higher than those of the others. CONCLUSIONS: These results suggest that loss of PTEN expression may play a critical role in tumor progression and metastasis by stimulating tumor angiogenesis in human gastric cancer.
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Carcinoma/blood supply , Disease Progression , Immunohistochemistry , Microcirculation/pathology , Neovascularization, Pathologic/metabolism , PTEN Phosphohydrolase/metabolism , Stomach Neoplasms/blood supply , Survival Rate , Vascular Endothelial Growth Factor A/metabolismABSTRACT
OBJETIVO: Avaliar a capacidade da ultra-sonografia com Doppler colorido em caracterizar a vascularização de carcinomas sólidos da mama e em correlacionar padrões de vascularização com o tamanho, estádio e grau histológico destes tumores. MATERIAIS E MÉTODOS: Sessenta e seis carcinomas da mama foram estudados com Doppler colorido. As características morfológicas e fluxométricas foram avaliadas antes da biópsia e correlações com aspectos clínicos, histopatólogicos e estadiamento tumoral foram avaliadas estatisticamente. RESULTADOS: Cinqüenta e dois tumores (79 por cento) apresentaram vasos penetrantes, 63 (95 por cento) mostraram vasos periféricos, 33 (50 por cento) tinham vasos centrais e em dois tumores (3 por cento) não foi observada vascularização. O número médio de vasos nos tumores foi de 11,9 ± 7,7 e na mama contralateral foi de 1,7 ± 2,5. Nenhuma associação foi evidenciada com as características histológicas. A distribuição dos vasos foi diferente em dois grupos de tumores. Não houve diferença na velocidade diastólica, na resistência e no índice de pulsatilidade dos tumores e da mama contralateral. A velocidade sistólica nos tumores foi de 11,74 ± 0,96 e na mama contralateral foi de 9,45 ± 0,55. O número de vasos aumentou com a progressão do estadiamento dos tumores. CONCLUSÃO: O padrão vascular dos carcinomas da mama identificado pelo Doppler colorido deve ser considerado com potencial característica importante na avaliação pré-operatória destes tumores, em conjunto com outros fatores prognósticos como o tamanho tumoral e o estádio da doença.
Subject(s)
Humans , Female , Adult , Middle Aged , Carcinoma/blood supply , Carcinoma , Breast Neoplasms/pathology , Ultrasonography, Doppler, Color , Blood Vessels , Breast Neoplasms , Sensitivity and SpecificityABSTRACT
Presentation of breast cancer at an advanced stage is a rule than exception in rural West Bengal. It was observed that 65.6% of fresh cases presented with history of breast lump with a duration of over 12 months. Of the total 32 cases, 27 (84.4%) had breast lump of more than 5 cm size and had 4 or more pathologically positive axillary nodes. In 28 cases (87.5%) largest node measured was 2 cm or more. In histology of breast specimen, 12 (37.5%) showed high degree of lymph vessel invasion while 31 (96.9%) had at least some lymphatic invasion. Blood vessel invasion of high degree was observed in 18 cases (56.2%) while 29 cases (90.6%) showed at least some blood vessel invasion.