No abstract available
MeSH terms
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Aged, 80 and over
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Carcinoma, Squamous Cell / pathology*
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Carcinoma, Squamous Cell / secondary*
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Esophageal Neoplasms / pathology*
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Esophagoscopy
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Humans
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Lymphatic Metastasis / diagnosis
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Male
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Neoplasm Metastasis
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Polyps / pathology