It is considered that they may originate frommultipotential differentiation of the subendocardiac multipotential mesenchyamal cells, with some of themhaving the charcaters of endodermal cells.

• 并对心脏粘液瘤的组织发生进行了讨论，认为肿瘤可能源于心内膜下多能性间叶细胞的多向性分化，有的亦有产生内胚层细胞特征的能力。