[Twin gestation with complete hydatidiform mole and a coexisting live fetus: A case report and review of the literature]. 2022

Olivier Moscoso, and Jessica Camacho, and Itziar García-Ruiz, and Joana Madureira, and Alexandra Navarro, and Santiago Ramón Y Cajal, and Marta Garrido-Pontnou, and Armando Reques
Servicio de Anatomía Patológica, Vall d'Hebron Hospital Universitari, Vall d'Hebron Barcelona Hospital Campus, Barcelona, España.

Twin pregnancies with complete hydatidiform mole and coexisting live fetus are very rare, with only about 300 reported cases. This type of pregnancy is considered a high obstetric risk due to the possibility of severe maternal-fetal complications. Although the clinical and ultrasound findings can be highly suggestive of this type of pregnancy, the definitive diagnosis is usually reached by histopathological examination. The differential diagnosis usually includes partial hydatidiform mole and hydropic pregnancies, which can present similar findings in specimens from the first trimester of pregnancy and thus it is important to interpret correctly the differentiating features. The use of immunohistochemistry for p57 can prove very useful, although some cases show an aberrant expression. We present a case of a twin pregnancy with complete hydatidiform mole associated with a live fetus, with magnetic resonance imaging and ultrasound for radiopathological correlation. We discuss the differential diagnosis and the utility of p57 immunohistochemistry.

UI MeSH Term Description Entries
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D005260 Female Females
D005333 Fetus The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN. Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006828 Hydatidiform Mole Trophoblastic hyperplasia associated with normal gestation, or molar pregnancy. It is characterized by the swelling of the CHORIONIC VILLI and elevated human CHORIONIC GONADOTROPIN. Hydatidiform moles or molar pregnancy may be categorized as complete or partial based on their gross morphology, histopathology, and karyotype. Molar Pregnancy,Pregnancy, Molar,Hydatid Mole,Hydatidiform Mole, Complete,Hydatidiform Mole, Partial,Complete Hydatidiform Mole,Complete Hydatidiform Moles,Hydatid Moles,Hydatidiform Moles,Hydatidiform Moles, Complete,Hydatidiform Moles, Partial,Molar Pregnancies,Mole, Complete Hydatidiform,Mole, Hydatid,Mole, Hydatidiform,Mole, Partial Hydatidiform,Moles, Complete Hydatidiform,Moles, Hydatid,Moles, Hydatidiform,Moles, Partial Hydatidiform,Partial Hydatidiform Mole,Partial Hydatidiform Moles,Pregnancies, Molar
D014427 Twins Two individuals derived from two FETUSES that were fertilized at or about the same time, developed in the UTERUS simultaneously, and born to the same mother. Twins are either monozygotic (TWINS, MONOZYGOTIC) or dizygotic (TWINS, DIZYGOTIC). Twin
D014594 Uterine Neoplasms Tumors or cancer of the UTERUS. Cancer of Uterus,Uterine Cancer,Cancer of the Uterus,Neoplasms, Uterine,Neoplasms, Uterus,Uterus Cancer,Uterus Neoplasms,Cancer, Uterine,Cancer, Uterus,Cancers, Uterine,Cancers, Uterus,Neoplasm, Uterine,Neoplasm, Uterus,Uterine Cancers,Uterine Neoplasm,Uterus Cancers,Uterus Neoplasm
D059285 Pregnancy, Twin The condition of carrying TWINS simultaneously. Pregnancies, Twin,Twin Pregnancies,Twin Pregnancy

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