Komai (1938) observed situs inversus in the salmon, particularly in one partner of conjoined twins and relatively fre-quently in the smaller twin. About 25% of identical twins are mirror image twins. Situs inversus is a congenital positional anomaly characterized by transposition of abdominal viscera, and when associated with a right-sided heart (Dextrocardia), is termed as situs inversus totalis [3]. Situs inversus (also called situs transversus or oppositus) is a congenital condition in which the major visceral organs are reversed or mirrored from their normal positions. Introduction. In this form of dextrocardia, the heart is simply placed further right in the thorax than is normal. frequently showing situs inversus. Background: Correction of hearts with situs inversus dextrocardia represent technical challenges due to mirror image anatomy and altered conduction pathway.Ventriculotomy has been the traditional approach for biventricular repair. The underlying cause and genetics of situs inversus are complex. Dextrocardia with situs inversus is a condition that is characterized by abnormal positioning of the heart and other internal organs.In people affected by dextrocardia, the tip of the heart points towards the right side of the chest instead of the left side.Situs inversus refers to the mirror-image reversal of the organs in the chest and abdominal cavity. Situs, the Latin word for the site, describes the normal position of the cardiac atria and internal organs [1,2]. Naturally students of human twins have been interested in situs inversus in connection with the general problem of mirror-image asymmetry in twins. Situs inversus is a condition in which the arrangement of the internal organs is a mirror image of normal anatomy. It is commonly associated with severe defects of the heart and related abnormalities including pulmonary hypoplasia.. Dextrocardia situs inversus. Kay's insides are the mirror image of a normal child's. The liver is positioned on … We report our experience of trans-atrial approach in these patients employing an easily reproducible preoperative delineation of the anatomy. This condition is known Situs Inversus , where visceral like stomach , heart or even liver are seen on opposite side than their normal anatomical position. Classification Dextrocardia of embryonic arrest. Abstract. It can occur alone (isolated, with no other abnormalities or conditions) or it can occur as part of a syndrome with various other defects. Congenital heart defects are present in about 5-10% of affected people. [2]In the absence of congenital heart defects, individuals with situs inversus are phenotypically unimpaired, and can lead normal healthy lives, without any complications related to their medical condition. Several fictional characters have reversed organs. In a few cases of mirror imaging, one twin may display situs inversus where the position of internal organs is on the side opposite to their usual placement…the heart is on the right rather than the left side, for example. In a few cases of mirror imaging, one twin may display situs inversus where the position of internal organs is on the side opposite to their usual placement; the heart is on the right rather than the left side, for example. Dextrocardia with situs inversus refers to the heart being a mirror image situated on the right side. Situs inversus is generally an autosomal recessive genetic condition, although it can be X-linked or found in identical "mirror" twins. Organs . Situs Inversus is a unique genetic condition that occurs when the organs of the chest and abdomen form and are positioned in the exact mirror image of where they are supposed to be. 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