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Nefroblastoma en una oveja adulta

Authors: Ferreras, Mª del Carmen; Martínez Fernández, B.; González, J.; Delgado, L.; Pérez Pérez, Valentín; Polledo, Laura; Camarena, M. T.; +1 Authors

Nefroblastoma en una oveja adulta

Abstract

Se realiza la necropsia a una oveja cruce Assaf x Awassi de dos años de edad, muerta en explotación con un cuadro de adelgazamiento progresivo y distensión abdominal. A la apertura del abdomen se observa una masa encapsulada de unos 28 cm de diámetro y 3 Kg de peso en el hipocondrio derecho, con sangre coagulada en su superficie y adherencias al hígado. A la sección muestra áreas nodulares de color blanquecino de 12x9 y 9,5x8 cm, con zonas de necrosis y una cavidad de 10x18 cm con sangre coagulada y material necrótico, que provoca atrofia por presión en el riñón derecho. Microscópicamente se observa proliferación de células epiteliales (con inmunotinción positiva frente a citoqueratinas), a veces formando túbulos, acinis o estructuras que recuerdan a glomérulos embrionarios, dentro de un tejido conjuntivo fibroso o mixoide. Se confirman también áreas de hemorragia, necrosis y calcificación. El riñón izquierdo, ligeramente hipertrófico, mostró nefrosis proteica y pigmentaria. Estas alteraciones son compatibles con un nefroblastoma o nefroma embrionario. Este tumor, derivado del blastema metanéfrico, generalmente es unilateral y no metastatiza. Se ha descrito en animales jóvenes (bovinos, cerdos, perros, gatos) pero se considera infrecuente en otras especies y en animales adultos.

Trabajo presentado a la XXI Reunión de la Sociedad Española de Anatomía Patológica Veterinaria (SEAPV). ( Ferreira de Pantón, Lugo. 24-26 de junio de 2009).

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green