tubo digestivo ii
TRANSCRIPT
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TUBO DIGESTIVO II
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MUCOSA COLÓNICA NORMAL
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ENFERMEDAD DE CROHN: “Saltatoria”• Localización: Afectación limitada – transmural,
granulomas, fisuras – fistulas.• Frecuencia: 2°, 3° decenio (todas las edades) V:M
5:2• Afectación : Intestino delgado 30%• Morfología: Serosa, granuloo- obscuro. * Edema- inflamatoria- Fibrosis- hipertrofia muscular propia.Primeras - Ulceras Aftosas. fases - Ulceras lineales. - Mosaico.
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CROHN
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CROHN
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INFLAMACIÓN TRANSMURAL DE COLON
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INFLAMACIÓN GRANULOMATOSA
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CUCI• Proceso ulceroinflamatorio “colon” (mucosa,
submucosa)• Asociación: Poliartritis migratoria, sacroileitis,
uveitis, colangitis, espondilitis A.• Morfología: Recto pancolitis (lesión
continua).• Mucosa: congestión,friable, úlceras,
pseudopólipos, aplanamiento mucosa.• Megacolon tóxico.
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CUCI
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• Cuadro clínico:- Diarrea. (moco – sangre).- Hemorragia – desequilibriohidroelectrolítico.- Dolor abdominal Defecación.- Clostridium difficile – stress.
Complicaciones Displasia Ca. Colon. 10 años.
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ADENOCARCINOMA CON COLITIS ULCERATIVA.
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Clasificación de Adenomas• ADENOMAS: PEDICULADO – Gdes. – Sésiles < 40 años 20% - 30%. PredisposiciónPredisposición
>50 – 60 años 40% - 50% FamiliarFamiliar
• ADENOMA TUBULAR: 90% colon- estómago-intestino delgado.• ADENOMA VELLOSO: Pólipos epiteliales sésiles 10 cm.- Recto
rectosigmoides. Grados de Displasia.• ADENOMA TUBULOVELLOSO: Displasia epitelial, ca. In situ
adenocarcinoma infiltrante
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ADENOMA TUBULAR
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ADENOMA
VELLOSOS
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PÓLIPOS
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Pólipo
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Cáncer de colon
• Ciego- colon ascendente 38 %.• Colon transverso 18 %• Colon descendente 8 %• Sigmoides 35 %
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ADENOCARCINOMA EN SIGMOIDES
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CA DE COLON MODERADAMENTE DIFERENCIADO
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CA COLON
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GLANDULAS NEOPLÁSICAS
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ADENOCARCINOMA MODERADAMENTE DIFERENCIADO