首先考虑低分化癌，特别是有一张肿瘤细胞沿着肌间隙浸润的方式很像癌。

胞浆之所以这样红，是否与他们的染色有关系，当然，也要排除淋巴造血来源的腭肿瘤

肉瘤，细胞弥漫分布，细胞胞浆偏红了点，核偏位，有纤维间隔，考虑髓外浆细胞瘤，有IHC支持就好办了。不知最后结果是什么？

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最后诊断：结肠原发性髓系肉瘤

注：本例免疫组化图片选自 http://www.pathology-home.com/2011/2011091401.asp

 

考虑淋巴瘤，不排除间质瘤