Ultrasonic diagnosis of embryonic malformations

Hellman, Louis M.; Kobayashi, Mitsunao; Cromb, Ellen

doi:10.1016/0002-9378(73)90609-1

Cited by 47 publications

(21 citation statements)

References 2 publications

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“…Furthermore, when these women were followed to term, the number of twins observed at delivery was considerably less than the number of twin conceptions originally identified during the first trimester [8,10,13,15,17,20,22,35,41]. These observations have led to the concept of the "vanishing twin," a term which has gained a modest degree of acceptance in recent years and has provided biologists and clinicians with new information regarding the true incidence of human twinning.…”

Section: Introductionmentioning

confidence: 98%

“…Numerous reports of serial ultrasonographic examinations of pregnant women have demonstrated the "disappearance" of at least one of two gestational rings [8,10,13,15,17,20,22,35,41]. Furthermore, when these women were followed to term, the number of twins observed at delivery was considerably less than the number of twin conceptions originally identified during the first trimester [8,10,13,15,17,20,22,35,41].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the number of twins observed at delivery was significantly less than the number of twin conceptions originally identified by ultrasound during the first trimester. These observations led to the concept of the "vanishing twin" [8,10,13,15,17,20,22,35,41].In order to obtain reference and personal data on this subject, we reviewed the literature and corresponded with members of the International Society for Twin Studies and obstetricians affiliated with Northwestern University Medical School, Chicago, Illinois. The nine studies that have documented this phenomenon cite "disappearance" rates ranging from 0% to 78%, depending on patient population and timing of ultrasonography [8,10,13,15,17,20,22,35,41].…”

mentioning

confidence: 99%

mentioning

confidence: 99%

“…The nine studies that have documented this phenomenon cite "disappearance" rates ranging from 0% to 78%, depending on patient population and timing of ultrasonography [8,10,13,15,17,20,22,35,41]. Several explanations are offered: physiological mechanisms of "disappearance" (resorption or formation of a blighted ovum or fetus papyraceus), artifactual error, incomplete scanning technique, and poor quality ultrasound equipment.…”

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confidence: 99%

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The Vanishing Twin

Landy¹,

Keith

1982

Acta genet. med. gemellol.: twin res.

102

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In general, it has not been recognized that many twin or multiple gestations are lost in utero early in pregnancy. Until the advent of ultrasound, the ability to document early human fetal loss in multiple gestation was difficult. However, recent reports of serial ultrasound examinations of pregnant women have documented the "disappearance" of at least one of two gestational rings. Furthermore, the number of twins observed at delivery was significantly less than the number of twin conceptions originally identified by ultrasound during the first trimester. These observations led to the concept of the "vanishing twin" [8,10,13,15,17,20,22,35,41].In order to obtain reference and personal data on this subject, we reviewed the literature and corresponded with members of the International Society for Twin Studies and obstetricians affiliated with Northwestern University Medical School, Chicago, Illinois. The nine studies that have documented this phenomenon cite "disappearance" rates ranging from 0% to 78%, depending on patient population and timing of ultrasonography [8,10,13,15,17,20,22,35,41]. Several explanations are offered: physiological mechanisms of "disappearance" (resorption or formation of a blighted ovum or fetus papyraceus), artifactual error, incomplete scanning technique, and poor quality ultrasound equipment. The only complication thus far associated with "disappearance" of a fetus is slight vaginal bleeding.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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The Vanishing Twin

Landy¹,

Keith

1982

Acta genet. med. gemellol.: twin res.

102

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Worldwide Controversies in Gestational Trophoblastic Neoplasms

Goldstein

1977

Intl J Gynecology & Obste

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This article reviews worldwide controversies concerning gestational trophoblastic neoplasms (hydatidiform mole, invasive mole, and choriocarcinoma). The epidemiology, endocrinology, histopathologic grading, classification, diagnosis, treatment, management and follow-up (including chemotherapy, irradiation, and immunotherapy) of gestational trophoblastic neoplasms - particularly molar pregnancies - are discussed; and ways to help create a standardized classification system and provide optimal treatment for each type of patient are suggested.

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