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Situs Viscerum Specularis in Monozygotic Twins

Published online by Cambridge University Press:  01 August 2014

L. Gedda ,
A. Sciacca ,
G. Brenci ,
S. Villatico ,
G. Bonanni ,
N. Gueli  and
C. Talone
L. Gedda*
Affiliation:
The Gregor Mendel Institute of Medical Geneticsand Twin Research, Rome
A. Sciacca
Affiliation:
Institute of Medical Pathology, First University of Rome, Rome
G. Brenci
Affiliation:
The Gregor Mendel Institute of Medical Geneticsand Twin Research, Rome
S. Villatico
Affiliation:
Institute of Medical Pathology, First University of Rome, Rome
G. Bonanni
Affiliation:
The Gregor Mendel Institute of Medical Geneticsand Twin Research, Rome
N. Gueli
Affiliation:
Institute of Medical Pathology, First University of Rome, Rome
C. Talone
Affiliation:
The Gregor Mendel Institute of Medical Geneticsand Twin Research, Rome
*
The Mendel Institute, Piazza Galeno 5, 00161 Rome, Italy

Abstract

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A case is reported of a 14-year old male MZ twin pair, with only one partner affected by situs viscerum inversus, whereby the condition is termed situs viscerum specularis. The high degree of mirror imaging is seen as an abnormal variation of the biological time of the cleavage giving rise to MZ twinning. Electrocardiographic findings are presented and the biological implications of the condition are discussed.

Keywords

Situs viscerum inversusMonozygotic twinningLateralityAtriogram
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 33 , Issue 1 , January 1984 , pp. 81 - 85
Copyright
Copyright © The International Society for Twin Studies 1984

References

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