良性间叶瘤少见，至少由两种间叶组织混合构成，分良性和恶性。

Mesenchymomas are very rare tumors and contain at least two mesenchymal cellular elements not commonly associated Mesenechymomas may be either benign or malignant.

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良性间叶瘤少见，至少由两种间叶组织混合构成，分良性和恶性。

Mesenchymomas are very rare tumors and contain at least two mesenchymal cellular elements not commonly associated Mesenechymomas may be either benign or malignant.

youdao