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Case Report: Postoperative cervical lymph node metastasis of the neuroendocrine carcinoma component of rectal mixed adenoneuroendocrine carcinoma

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Introduction: Clinical case reports of rectal mixed neuroendocrine-non-neuroendocrine tumors are rare. This report highlights a case in which only the neuroendocrine carcinoma component metastasized to the lymph nodes seven years... ...