详细解释:【医】 退行发育, 间变
英语解释：
名词 anaplasia:
loss of structural differentiation within a cell or group of cells often with increased capacity for multiplication, as in a malignant tumor详细解释：
an.a.pla.sia
n.（名词）Reversion of cells to an immature or a less differentiated form, as occurs in most malignant tumors.退行发育：细胞退化到不成熟或未变异的状态，如多数恶性肿瘤