If these tumors are mostly solid, then they are often "immature" teratomas with less differentiated tissue and are more aggressive.

如果肿瘤以实体为主，则常是未成熟畸胎瘤，分化程度较低，并有更大的侵袭性。

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However, the overall difference between them is not great, so this benign neoplasm mimics the normal tissue quite well and this, therefore, well-differentiated.

然而它们之间的不同不是很大，因此这种良性肿瘤与正常的组织相似性较大，分化较好。

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Aim: to investigate the clinical significance of estrogen receptor (er) expression in differentiated thyroid carcinoma (DTC) tissue.

目的：探讨甲状腺分化癌(DTC)组织中雌激素受体(ER)表达的临床意义。

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