Holocardius amorphus

Gamboa, Germán Riaño

doi:10.18597/rcog.2455

Rev. Colomb. Obstet. Ginecol.

1964

DOI: 10.18597/rcog.2455

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Holocardius amorphus

Germán Riaño Gamboa

Abstract: Dentro de la variedad de monstruos ligados al embarazo gemelar, y conocidos con el nombre de Acardius, se encuentra el denominado Hoioacardius Amorphus, que Schatz define como una masa completamente amorfo, sin ninguna apariencia humana y sin rudimentos de corazón.

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A note on the epidemiology of acardiac monsters

James

1977

Teratology

139

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The literature on acardiac monsters has been reviewed. The following conclusions were drawn: 1. The probability of their appearance seems considerably higher among monoamniotic than diamniotic monochorionic twin pairs. 2. They seem more likely to occur within monozygotic (MZ) pairs in higher multiple births than in MZ twins. 3. The data are consistent with the suggestion that there is a slight female excess among them.

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A note on the epidemiology of acardiac monsters

James

1977

Teratology

139

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Fetus amorphus or placental teratoma?

et al. 1989

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A differential diagnosis between fetus amorphus and placental teratoma based on the presence of an umbilical cord and/or skeletal organization in the fetus amorphus has been proposed (Fox and Butler-Manual: Journal of Pathology 88:137-140, 1964). We report a description of one new case of fetus amorphus, along with the results of a critical reexamination of 96 cases from the literature. Our findings fail to support the proposed criteria for distinguishing fetus amorphus from placental teratomas. We find that the presence or absence of an umbilical cord does not relate at all to the developmental state of the specimen. The extent of skeletal development may be a more valid criterion; however, the internal organization in the fetus amorphus forms an anatomical continuum with that of the placental teratoma, making a differential diagnosis meaningless. Additional research is necessary to solve this dilemma.

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Acardia: Predictive risk factors for the co‐twin's survival

Healey

1994

Teratology

135

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This study aimed to find factors in acardiac pregnancies that could be used to predict survival rates of the pump fetus. Five cases of acardia at Monash Medical Centre were found, and all case reports available in the literature from 1960 to 1991 (184 cases) were collected and analyzed. Acardia is more common in nulliparous women and in monoamniotic monochorionic pregnancy. The acardiac fetus usually has a two-vessel umbilical cord and is most likely to develop structures supplied by the lower aortic branches. Delivery is more often preterm (mean gestation = 31.1 weeks) than normal twins. The overall perinatal mortality for the pump fetus is 35% in twins and 45% in triplets. Factors associated with a statistically significant increase in perinatal mortality for the pump fetus include delivery before 32 weeks gestation, acardiacus anceps form of acardia, and the presence of arms, ears, larynx, trachea, pancreas, kidney, or small intestine in the acardiac fetus. Active intervention in these pregnancies is reasonable.

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Holocardius amorphus

Abstract: Dentro de la variedad de monstruos ligados al embarazo gemelar, y conocidos con el nombre de Acardius, se encuentra el denominado Hoioacardius Amorphus, que Schatz define como una masa completamente amorfo, sin ninguna apariencia humana y sin rudimentos de corazón.

Cited by 3 publications

References 3 publications

A note on the epidemiology of acardiac monsters

A note on the epidemiology of acardiac monsters

Fetus amorphus or placental teratoma?

Acardia: Predictive risk factors for the co‐twin's survival

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