When a vesicular placenta meets a live fetus: case report of twin pregnancy with a partial hydatidiform mole

Background Hydatidiform moles exhibit a distinctive gross appearance of multiple vesicles in the placenta. The advances in cytogenetic technologies have helped uncover novel entities of hydatidiform moles and enabled elaborate diagnoses. However, management of a vesicular placenta with a coexistent live fetus poses a bigger challenge beyond hydatidiform moles. Case presentation A 33-year-old woman was referred to our department for suspected hydatidiform mole coexistent with a live fetus at 24 weeks’ gestation. The patient had conceived through double embryo transplantation, and first-trimester ultrasonography displayed a single sac. Mid-trimester imaging findings of normal placenta parenchyma admixed with multiple vesicles and a single amniotic cavity with a fetus led to suspicion of a singleton partial molar pregnancy. After confirmation of a normal diploid by amniocentesis and close surveillance, the patient delivered a healthy neonate. Preliminary microscopic examination of the placenta failed to clarify the diagnosis until fluorescence in situ hybridization showed a majority of XXY sex chromosomes. The patient developed suspected choriocarcinoma and achieved remission for 5 months after chemotherapy, but relapsed with suspected intermediate trophoblastic tumor. Conclusion We report a rare case of twin pregnancy comprising a partial mole and a normal fetus that resembled a singleton partial molar pregnancy. Individualized care is important in conditions where a vesicular placenta coexists with a fetus. We strongly recommend ancillary examinations in addition to traditional morphologic assessment in such cases.

The Contribution of QF-PCR and Pathology Studies in the Diagnosis of Diandric Triploidy/Partial Mole

Objective: the aim of our study was to assess the contribution of quantitative fluorescent polymerase chain reaction (QF-PCR) and pathology studies in the diagnosis of diandric triploidies/partial hydatidiform moles. Methods: this study included all fet al triploidies diagnosed by QF-PCR in chorionic villi or amniotic fluid in the 2 centers of BCNatal in which a maternal saliva sample was used to establish its parental origin. Pathology studies were performed in products of conception and concordance between a partial hydatidiform mole diagnosis and the finding of a diandric triploidy was assessed. Results: among 46 fetal triploidies, found in 13 ongoing pregnancies and in 33 miscarriages, there were 26 (56%) diandric triploidies. Concordant molecular (diandric triploidy) and pathology results (partial mole) were achieved in 14 cases (54%), while in 6 cases (23%) pathology studies were normal, and in the remaining 6 cases (23%) pathology studies could not be performed because miscarriage was managed medically. Conclusions: diandric triploidy is associated with partial hydatidiform mole and its diagnosis is crucial to prevent the development of persistent trophoblastic disease. QF-PCR analysis in chorionic villi or amniotic fluid provides a more accurate diagnosis of the parental origin of triploidy than the classical pathology studies.

PRENATAL DIAGNOSIS AND POSTNATAL MANAGEMENT OF THE COMPLETE MOLAR PREGNANCY WITH COEXISTING NORMAL FETUS

Hydatidiform mole with a coexisting fetus is an extremely rare phenomenon; the incidence of such an occurrence ranges from 1 in 10 000 to 1 in 100000 gestations(Cunningham et al., 1997).There were two possible conditions:a partial mole with an abnormaltriploid fetus, and a complete mole combined with a normal fetus and placenta. Most cases suffer severe complications, such as pre-eclampsia, abortion and preterm delivery,or termination immediately after the diagnosis.

Hydatidiform Mole Coexisting with Healthy and Alive Fetus at Birth: Case Report in Mexico

Aims: To describe a case of hydatidiform mole coexisting with healthy and alive fetus at birth in Mexico. Presentation of Case: A 35 years old pregnant patient at 18+5 weeks of gestational age and a viable fetus by ultrasound, with atypical pneumonia, plus scant bilateral pleural effusion and partial mole implants on admission to hospital. At week 39 of gestation, the pregnancy was interrupted abdominally; a gestation product was obtained, alive, female, and without malformations. The patient did not present complications. The histopathological report of the placenta was compatible with a partial mole. Discussion: Gestational trophoblastic disease includes partial hydatidiform mole, its occurrence in coexistence with alive and healthy fetus at birth is 0.005-0.01% respect to the total number of pregnancies. The viability of the term of pregnancy will depend on maternal comorbidities, fetalsss well-being and accessible medical surveillance. The ultrasound is the main diagnostic tool. Clinical monitoring is of vital importance after the end of pregnancy, mainly in mother, due to the risk of developing metastatic disease and recurrence of molar pregnancy. Conclusion: The case report described is relevant, due to its infrequency. In addition, the imaging findings, emphasizes the importance of a complete and adequate evaluation of the placenta and the fetus, in viable gestation conditions in coexistence with partial mole.

Incidental diagnosis of sad fetus syndrome in triplets

An unusual presentation of gestational trophoblastic disease is twin molar pregnancy, rarest in triplets with differentials being partial/complete mole, placental mesenchymal dysplasia (PMD), placental cysts or chorioangioma each with different complications. Counselling to continue pregnancy depends on diagnosis. A 37-year-old G2P1L1, donor oocyte In vitro fertlisation (IVF) twin pregnancy was referred at 24 weeks with cystic areas in placenta. Probability of twin partial mole or PMD was assessed. The scan of fetuses showed normal growth, no structural anomalies. Biochemical markers showed high maternal beta human chorionic gonadotropin (β-hCG). Amniocentesis of molar fetus revealed normal karyotype. Likely diagnosis made as twin partial mole. The patient delivered by caesarean section at 28+2 weeks due to preterm labour. Twins, a male and a female baby, were delivered with three placentas, two normal and the third with molar changes and no fetal parts. Diagnosis was revised as triplet with partial mole, which was confirmed on histopathology. Serial monitoring of β-hCG became undetectable by eighth week. The male baby died on day 4. The mother and the female baby were discharged.

Role of the Immunohistochemical Marker (Ki67) in Diagnosis and Classification of Hydatidiform Mole

Introduction: Since the hallmark of gestational trophoblastic disease is trophoblastic proliferation, Ki67 is regarded as the best marker in studying hydatidiform mole.This study was conducted to evaluate the role of this proliferative marker in distinguishing among hydropic abortion, partial and complete hydatidiform mole. Materials and methods: This is a cross sectional study involving the application of Ki67 on a total of 90 histological samples of curetting materials from molar (partial and complete mole) and non molar hydropic abortion belong to Iraqi females, so three study groups were created. Immunohistochemical expression in villous cytotrophoblasts, syncytiotrophoblasts and stromal cells were recorded separately by three independent observers and the results were correlated statically. Results: The mean number of stained nuclei of villous cytotrophoblasts and stromal cells was the highest in complete mole and the lowest in non molar hydropic abortion. There is a significant statistical relationship regarding Ki67 labeling index in villous cytotrophoblasts between partial moles and hydropic abortion, complete mole and partial moles, hydropic abortion and complete mole. Regarding Ki67 labelling index in villous stromal cells, a significant statistical relationship achieved when the correlation done between partial mole and hydropic abortions, hydropic abortion and complete mole, while a non significant statistical relationship was achieved if the correlation done between partial and complete mole. All villous syncytiotrophoblasts showed negative results. Conclusion: Ki-67 labeling index in villous cytotrophblastic cells are useful in separating between partial moles and hydropic abortion, partial mole and complete mole, hydropic abortion and complete mole. While Ki-67 labeling index in villous stromal cells is only useful in separating between partial moles and hydropic abortion, hydropic abortion and complete mole.

Histopathological examination of tissues following a surgical uterine evacuation in the first trimester bleeding: clinical relevance

Background: There is no general consensus about the role of routine HPE of the obtained tissue at the time of uterine evacuation. However, it is understood clinically that it is of utmost importance to prove the presence of intrauterine gestation and to exclude gestational trophoblastic disease in the form of partial or complete mole. This study aimed to assess the role of histopathology in cases of first trimester miscarriages and to determine clinical relevance of histopathological examination following surgical evacuation. Methods: This was a retrospective study of collected data over 12 months (January 2018- De­cember 2018) in an agency for reproductive health setup with predefined inclusion criteria. We included 60 consecutive patients attended with history of first trimester bleeding. Patient’s record and the histopathological examination report of products of conception following uterine evacu­ation were observed. The data was analyzed descriptive statistics including percentage, stander deviation, mean, and range in Microsoft Excel software. Results: Missed abortion was the most common type and constituted 55% of the studied group. The histopathological reports confirmed the pregnancy in all patients and revealed partial mole in 6(10%) patients and complete mole in 2(3.33%) patients. Conclusions: Histopathological examination of products of conception detects under diagnosed molar pregnancies that necessitates special follow up and is a key step to do further management.

Mola parcial con feto vivo, complicado con restricción de crecimiento intrauterino y preeclamsia severa. Reporte de caso y revisión de la literatura

Objetivo: reportar un caso de mola parcial con feto vivo y realizar una revisión de la literatura sobre las complicaciones maternas y fetales asociadas a esta condición.Materiales y métodos: se presenta el reporte de un caso de mola parcial y feto vivo de 33 semanas, complicado por restricción de crecimiento intrauterino, oligoamnios y preeclampsia severa. Después de seguimiento del recién nacido a un año reportamos un resultado satisfactorio materno-fetal. Se realiza una búsqueda de la literatura en Medline vía PubMed, LILACS, OVID, Uptodate y Google Scholar, con los siguientes términos MESH: “hiditadiform mole”, “partial mole”, “live fetus”, “coexisting live fetus”. Se seleccionaron estudios de series de caso y reportes de caso de gestantes con coexistencia de mola parcial y feto vivo al momento del diagnóstico, y se extrajo información sobre el pronóstico materno-fetal. Resultados: se identificaron inicialmente 129 títulos relacionados, de los cuales 29 cumplieron los criterios de inclusión, 4 artículos fueron excluidos por no obtener acceso al texto completo. Se analizaron 31 casos reportados, 9 casos terminaron en aborto, 8 terminaron en óbito o muerte perinatal y 14 (45%) casos terminaron con un recién nacido vivo. La complicación materna más frecuente fue preeclampsia, en 6 (19,35%) casos. Conclusión: la coexistencia de mola parcial con feto vivo presenta un riesgo alto de resultado perinatal adverso y preeclampsia. Se requiere más información sobre esta rara condición para determinar de mejor manera posibles intervenciones en los casos de fetos euploides y dar una adecuada asesoría en la práctica clínica, por lo que es importante el reporte de estos casos para tener suficiente evidencia sobre el comportamiento natural de la enfermedad.