No abstract available
MeSH terms
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Cytoplasmic Granules / ultrastructure
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Duodenal Neoplasms / blood
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Duodenal Neoplasms / pathology*
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Follow-Up Studies
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Humans
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Intestinal Polyps / pathology
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Male
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Middle Aged
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Somatostatin / blood*
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Somatostatinoma / blood
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Somatostatinoma / pathology*