Pregnancy occurs when an egg, which is released from the ovary during ovulation, is fertilized by a sperm. Human pregnancy takes approximately 40 weeks. Gestational<unk>  neoplasia arises from the<unk>  tissue, which provides nutrients to the embryo and develops into a large part of the placenta. Invasive mole is basically a benign tumor which arises from the invasion of the myometrium of a hydatidiform mole. Choriocarcinoma is a malignant tumor of the<unk>  epithelium. Placental-site<unk>  tumor (PSTT), a rare tumor, arises from the implantation site of placenta. Epithelioid<unk>  tumor (ETT) is basically a rare variant of placental-site<unk>  tumor (PSTT) which arises from the malignant transformation of chorionic-type intermediate<unk>  cells. Invasive mole is usually diploid but can also be aneuploid in karyotype. Choriocarcinoma has an aneuploid karyotype and majority of the cases have a Y chromosome.
Gestational trophoblastic neoplasia pathophysiology
Gestational trophoblastic neoplasia causes
Ectopic pregnancy pathophysiology
Cervical dysplasia causes
Ectopic pregnancy risk factors
Endometrial hyperplasia risk factors
Endometrial hyperplasia pathophysiology
Endometriosis risk factors