目的：探讨食管原发性未分化小细胞癌临床病理特点。
Objective: To investigate the clinicopathologic features of undifferentiated small cell carcinoma of esophagus.
食道癌是指原发于食道的癌瘤，主要包括鳞癌、腺癌、未分化小细胞癌、癌肉瘤等。
Esophagus cancer is to point to former hair the cancerous tumor at esophagus, basically include scale cancer, gland cancer, did not split up caruncle of cellule cancer, cancer.
转移性未分化癌，尤其是小细胞间变型，大多来自肺。
Most of the metastatic undifferentiated carcinomas are from lungs, especially the anaplastic carcinomas of small cell type.
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