Small cell carcinoma of the head and neck: An analysis of the National Cancer Database

According to the World Health Organization, small cell carcinoma and poorly differentiated (grade III) neuroendocrine tumors are considered the same entity and are the most aggressive type of neuroendocrine carcinomas [1]. The histological category of neuroendocrine carcinomas includes carcinoid tumors, atypical carcinoid tumors and small cell carcinomas. Other synonyms for small cell carcinoma include small cell neuroendocrine carcinoma, oat cell carcinoma, anaplastic small cell carcinoma and small cell neuroendocrine carcinoma of intermediate type [2].

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