A case of small polypoid esophageal carcinoma with multidirectional differentiation, including neuroendocrine, squamous, ciliated glandular, and sarcomatous components.
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A. Ochiai | Y. Nakanishi | H. Watanabe | T. Shimoda | H. Yamaguchi | H. Kato | Y. Tachimori | A. Kanamoto