partial hydatiform mole
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With a partial mole, fetal tissue is often present. Fetal erythrocytes and vessels in the villi are a common finding.
The chromosomal complement is 69,XXX or 69,XXY. This results from fertilization of a haploid ovum and duplication of the paternal haploid chromosomes or from dispermy. Tetraploidy may also be encountered.
As in a complete mole, hyperplastic trophoblastic tissue and swelling of the chorionic villi occur.
Associations
constitutional triploidy
See also