No abstract available
MeSH terms
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Aged, 80 and over
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Ampulla of Vater / pathology*
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Carcinoma, Adenosquamous / genetics*
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Carcinoma, Adenosquamous / pathology
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Carcinoma, Pancreatic Ductal / genetics
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Carcinoma, Pancreatic Ductal / pathology
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Common Bile Duct Neoplasms / genetics*
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Common Bile Duct Neoplasms / pathology
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Duodenal Neoplasms / genetics*
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Duodenal Neoplasms / pathology
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Female
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Humans
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Point Mutation
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Proto-Oncogene Proteins p21(ras) / genetics*
Substances
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KRAS protein, human
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Proto-Oncogene Proteins p21(ras)