Microscopía electrónica de barrido de la transformación hidrópica de la vellosidad placentaria.

摘要: Introduction: To investigate placental hydropic vesicles stromal transformation is important in determining pathophysiologic tissue alterations. Objectives: describe hydatidiform mole and mesenchymal dysplasia tridimensional characteristics of villi stroma transformation. Design: Histopathologic study. Biologic material: Curettage specimens obtained from patients with molar pregnancy dysplasia. Interventions: Conventional scanning electron microscopy stains were applied to by curettage Results compared normal villi. Both during the second trimester pregnancy. Main outcome measures: Placental changes. Results: A complex net cells bundles collagen fibres associated extracellular matrix loose connective observed as well regions close each other. Cavities different size resulted disappearance dense regions. Small spaces seemed converge constitute larger ones until a central cistern was developed. In some region displaced periphery below trophoblast internal layer enlargement that appeared empty where interstitial fluid existed vivo. Frequently large replaced stroma. Conclusions: These findings give new vision changes produced entrance into resulting an edematous structure us better understanding