表面鳞状上皮未见异常，间质内见梭形及上皮样细胞，血管丰富，并见散在小淋巴细胞，未见核分裂。CK及CD34排除上皮及血管来源。SMA阳性；

GIST、平滑肌瘤、肌上皮来源肿瘤？

选择诊断：

1、平滑肌瘤

2、GIST

3、炎性肌纤维母细胞瘤

4、炎性肉芽组织

5、纤维上皮性息肉

炎性肌纤维母细胞瘤。

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