Gallbladder Cancer Staging – Flashcards
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T1a
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Tumor invades lamina propria
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T2
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Tumor invades perimuscular connective tissue on peritoneal side without involvement of serosa; or tumor invades perimuscular connective tissue on hepatic side without extension into the liver
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T3
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Tumor perforates the visceral peritoneum (serosa) or directly invades the liver and/or one other adjacent organ or structure
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T4
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Tumor invades main portal vein or hepatic artery or invades ≥2 extrahepatic organs or structures
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N1
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Metastases to 1-3 regional nodes
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N2
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Metastases to ≥4 regional nodes
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T1b
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Tumor invades muscle layer
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Stage for T1 N0 M0 disease
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Stage I
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Stage for T1-3 N1 M0 disease
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Stage IIIB
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Stage for T2b N0 M0 disease
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Stage IIB
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Stage for T4 N0 M0 disease
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Stage IVA
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Stage for T0 N2 M0 disease
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Stage IVB
