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ISSN: 2394-4137 (E) 2394-6318 (P)

IJIMS.2015.130

Type of Article: Case Report

Volume 2; Issue 10: October 2015

Page No.: 170-174

DOI: 10.16965/ijims.2015.130

 

Conjoined Twins (Thoraco-Omphalopagus)

Prasad Arun *1, Kapoor Kanchan 2, Sharma Anshu 3, Abraham Joseph 4.

*1 Department of Anatomy, Andaman Nicobar Islands Institute of Medical Sciences, Port Blair, India.

2,3,4 Department of Anatomy, Government Medical College, Chandigarh, India.

CORRESPONDING AUTHOR ADDRESS: Dr. Arun Prasad, Department of Anatomy, Andaman Nicobar Island Institute of Medical Sciences, Port Blair, Andaman Nicobar Islands, India.  E-Mail: drprasadarun@gmail.com

 

ABSTRACT

Conjoined twins are a rarely seen congenital anomaly with severe mortality. Among the different variety of conjoined twins, Thoraco-omphalopagus is the most common type, wherein the two foetuses are joined at thorax and upper abdomen region. In this type of twins usually there is single heart, but lungs will be separate. In GIT, the foregut will be separate, but midgut may be shared by both twins. Hindgut will be separate. The exact cause is unknown, but it is mostly considered to be an irregular division of the zygote. One such case was observed during routine foetal autopsy performed in Dept of Anatomy, GMCH-32, and Chandigarh. The mother was 21yrs old prime gravida and the condition was diagnosed at the time of USG examination at 13+6 weeks of gestational age. Autopsy was performed after taking full consent. The foetuses had single umbilical cord and sex of both the foetuses was male. After autopsy it was found that both foetuses shared single heart, stomach, small intestine, large intestine, liver and spleen. However there was development of separate lungs and organs of Genito-urinary system. There are two theory proposed for the formation of the conjoined twins. A fusion theory which is more accepted and other one is fission theory. The exact mechanism of formation of twins, obstetrical and surgical importance and other details will be discussed in detail with the available literature.

KEY WORDS: Conjoined Twins, Thoraco-ompahlopagus, Congenital Anomaly.

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