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Gastric Mixed Adenoneuroendocrine Carcinoma with Extensive Liver Metastases Treated with Neoadjuvant Chemotherapy and Surgery

Author(s): Ming Li, Yuanchuan Zhang, Qin Yang

Gastric mixed adenoneuroendocrine carcinomas (G-MANEC) are rare malignancies with about 40 cases reported to date in English literature. Clinically, G-MANEC is characterized by aggressive behavior with rapid progression including a high incidence of regional and distant metastasis, leading to tumor-related death without any chance of surgical resection. Moreover, there is no uniform standard adjuvant chemotherapy for G-MANEC. Here, we report a case of G-MANEC with extensive liver metastases that gained survival benefits from neoadjuvant chemotherapy. A brief discussion of the biological behavior and treatment of G-MANEC is presented.

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