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Very Early and Simple Determination of Chorionic and Amniotic Type in Twin Gestations by High-Frequency Transvaginal Ultrasonography

Published online by Cambridge University Press:  01 August 2014

W. Malinowski
W. Malinowski*
Affiliation:
Department of Obstetrics and Gynecology, Kutno, Hospital, Poland
*
Department of Obstetrics and Gynecology, Kutno Hospital, 42 Kościuszki Street, 99-300 Kutno, Poland

Abstract

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Objective. The aim was to determine the chorionic and amniotic types in multifetal pregnancies with transvaginal ultrasonography at very early stage of gestation.

Study design. Twenty-one spontaneous multifetal pregnancies were scanned transvaginally before 8 weeks' gestation (four of them from 4th week). The chorionic and amniotic type was determined ultrasonographically. All twin gestations had postpartum pathologic evaluation of the placenta and histologic determination of the chorionic and amniotic type.

Results. Ultrasonographic evaluation of the 21 pregnancies demonstrated 20 twin and 1 triplet gestation. Four of the twin pregnancies were monochorionic-diamniotic. Triplet was monochorionic-triamniotic (spontaneously aborted in 8th week of gestation). In all 20 twin pregnancies, transvaginal ultrasonography correctly predicted the chorionic and amniotic type before 8 weeks of gestation.

Conclusion. Transvaginal ultrasonography allows a reliable, simple and rapid determination; the dichorionic twin pregnancy in 4 weeks, monochorionic in 5 weeks, and differentiation of mono-or diamniotic in 7 weeks of gestation.

Keywords

Transvaginal ultrasonographyMultiple pregnancy“Eight” sign“Two rings” sign“One ring” sign
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 46 , Issue 3 , July 1997 , pp. 167 - 173
Copyright
Copyright © The International Society for Twin Studies 1999

References

REFERENCES

1.Baldwin, VJ (1994): Pathology of Multiple Pregnancy. New York, Springer-Verlag.CrossRefGoogle Scholar
2.Benirschke, K (1990): The placenta in twin gestation. Clinical Obstet Gynecol 33: 18–31.Google Scholar
3.D'Alton, ME, Dudley, DK (1986): Ultrasound in the antenatal management of twin gestation. Semin Perinatol 10: 30–8.Google ScholarPubMed
4.D'Alton, ME, Dudley, DK (1989): The ultrasonographic prediction of chorionicity in twin gestation. Am J Obstet Gynecol 160: 557–61.Google Scholar
5.Finberg, HJ (1992): The “twin peak” sign: reliable evidence of dichorionic twinning. J Ultrasound Med 11: 571–7.Google Scholar
6.Goldstein, SR (1988): Early pregnancy scanning with the endovaginal probe. Contemp Ob Gyn 31: 54–64.Google Scholar
7.Goldstein, SR, Snyder, JR, Watson, C, et al. (1988): Very early pregnancy detection with endovaginal ultrasound. Obstet Gynecol 72: 200–4.Google ScholarPubMed
8.Hertzberg, BS, Kurtz, AB, Choi, HY (1987): Significance of membrane thickness in the sonographic evaluation of twin gestations. Radiology 148: 151–3.Google ScholarPubMed
9.Kurtz, AD, Wapner, RJ, Mata, J, et al (1992): Twin pregnancies: accuracy of first trimester abdominal US in predicting chorionicity and amnionicity. Radiology 185: 759–62.CrossRefGoogle ScholarPubMed
10.Mahony, BS, Filly, RA, Callen, PW (1985): Amnionicity and chorionicity in twin pregnancies: Prediction using ultrasound. Radiology 155: 205–9.Google Scholar
11.Malinowski, W, Gagior, W (1992): Evaluation of dividing septum in multiple pregnancies with ultrasound for diagnosis of monochorionic pregnancy. Ultrason Pol 2: 41–6.Google Scholar
12.Malinowski, W, Gasior, W (1994): “Lambda” sign in the ultrasonographic prediction of chorionicity in twin gestation. Ultrason Pol 4: 71–4.Google Scholar
13.Monteagudo, A, Timor-Tritsch, IE, Sharma, S (1994): Early and simple determination of chorionic and amniotic type in multifetal gestations in the first fourteen weeks by high-frequency transvaginal ultrasonography. Am J Obstet Gynecol 170: 824–9.CrossRefGoogle ScholarPubMed
14.Warren, WB, Timor-Tritsch, IE, Peisner, DB, et al (1989): Dating the pregnancy by sequential appearance of embryonic structures. Am J Obstet Gynecol. 161: 747–53.Google Scholar
15.Winn, HN, Gabrielli, S, Reece, A, et al (1989): Ultrasonographic criteria for the prenatal diagnosis of placental chorionicity in twin gestations. Am J Obstet Gynecol 161: 1540–2.Google Scholar