is a complete reversal then it probably isn't a big deal.
WikipediaSitus 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. The normal arrangement of internal organs is known as situs solitus. Although cardiac problems are more common, many people...
https://en.wikipedia.org/wiki/Situs_inversus