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BMC Cancer ; 10: 8, 2010 Jan 08.
Artículo en Inglés | MEDLINE | ID: mdl-20064215

RESUMEN

BACKGROUND: To investigate the relationship between the magnetic resonance imaging (MRI) features of breast cancer and its clinicopathological and biological factors. METHODS: Dynamic MRI parameters of 68 invasive breast carcinomas were investigated. We also analyzed microvessel density (MVD), estrogen and progesterone receptor status, and expression of p53, HER2, ki67, VEGFR-1 and 2. RESULTS: Homogeneous enhancement was significantly associated with smaller tumor size (T1: < 2 cm) (p = 0.015). Tumors with irregular or spiculated margins had a significantly higher MVD than tumors with smooth margins (p = 0.038). Tumors showing a maximum enhancement peak at two minutes, or longer, after injecting the contrast, had a significantly higher MVD count than those which reached this point sooner (p = 0.012). The percentage of tumors with vascular invasion or high mitotic index was significantly higher among those showing a low percentage (150%) of enhancement rate (p = 0.016 and p = 0.03, respectively). However, there was a significant and positive association between the mitotic index and the peak of maximum intensity (p = 0.036). Peritumor inflammation was significantly associated with washout curve type III (p = 0.042). CONCLUSIONS: Variations in the early phase of dynamic MRI seem to be associated with parameters indicatives of tumor aggressiveness in breast cancer.


Asunto(s)
Neoplasias de la Mama/patología , Regulación Neoplásica de la Expresión Génica , Imagen por Resonancia Magnética/métodos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Antígeno Ki-67/biosíntesis , Cinética , Microcirculación , Persona de Mediana Edad , Invasividad Neoplásica , Receptor ErbB-2/biosíntesis , Receptores de Estrógenos/biosíntesis , Receptores de Progesterona/biosíntesis , Proteína p53 Supresora de Tumor/biosíntesis , Receptor 1 de Factores de Crecimiento Endotelial Vascular/biosíntesis , Receptor 2 de Factores de Crecimiento Endotelial Vascular/biosíntesis
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