Situs inversus. Reversed position organs.

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.

lies between the 9th and 11th ribs on the left hand side

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I had a ruptured spleen removed as a child. The scar is much lower than my ribs and on the right side of my navel. One is supposed to have the winter flu jab in this circumstance, though it made me extremely ill, so i refuse it. :suspect:

https://en.wikipedia.org/wiki/Situs_inversus