It is a chorion disease; the death of the embryo’s ovum or failure to grow is essential to develop a complete hydatidiform mole.
The secretion from the hyperplastic cells and substances from the maternal blood accumulate in the stroma (the supportive tissue of an epithelial organ, tumor) of the villi, devoid of blood vessels.
The expands villi from small vesicles. It is due to the edema, gas, liquid of the stroma. The distension may also be due to edema and liquefaction (the process of making something, especially a gas drink) of the stroma.
This type of mole contains no evidence of embryo, cord, or membranes.
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