Download - sistema porta
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SISTEMA PORTAL
DRA. LAURA DELUCA. 29-08-01
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ANATOMÍA LOBULAR NORMAL
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LÓBULO CAUDADO
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ANATOMÍA VENOSA HEPÁTICA
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IMAGEN TRANSVERSAL DE LA PORTA HEPATIS
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ANATOMIA VENOSA PORTAL
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ANATOMÍA SEGMENTARIA
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T1
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HIPERTENSIÓN PORTAL
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Hipertensión portal presinusoidal.Extrahepática.
• Trombosis de la vena porta o esplénica.• Hipertensión portal en niños: cateterización
de la vena umbilical, onfalitis, sepsis neonatal.
• HP en adultos: traumatismo, sepsis, carcinoma hepatocelular, ca. Pancreático, pancreatitis, cortocircuito porto cava, esplenectomía, hipercoagulación.
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HP presinusoidal intrahepática.
• Esquistosomiasis.
• Cirrosis biliar primaria.
• Fibrosis hepática congénita.
• Sust. Tóxicas: polivinilo, metotrexate.
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Colaterales venosas portosistémicas
• Unión gastroesofágica.
• Vena paraumbilical.
• Venas esplenorrenales y gastrorrenales.
• Anastomosis intestinales-retroperitoneales.
• Venas hemorroidales.
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TROMBOSIS DE LA VENA PORTA
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TRANSFORMACIÓN CAVERNOMATOSA.
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3 AÑOS DESPUÉS . VENAS COLATERALES.
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Colaterales periumbilicales en pac. Con hp.
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CIRROSIS
Extensa fibrosis. Innumerables nódulos regenerativos.
Se pueden observar: micronódulos (menor a 3mm) macronódulos (mayor a 3mm) mixtos.
Causas: Alcohol, hepatitis, hemocromatosis, obstrucción bi-Liar, toxinas, enf. Wilson, galactosemia, enf. Glucógeno.
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