Zacutus Lusitanus says that he once found a mass of flesh in place of the liver.

Lieutaud is quoted as describing a postmortem examination of an adult who had died of hydropsy, in whom the liver and spleen were entirely missing.

The portal vein discharged immediately into the vena cava; this case is probably unique, as no authentic parallel could be found.
Laget reports an instance of supernumerary lobe in the liver.

Van Buren describes a supernumerary liver.

Sometimes there is rotation, real or apparent, caused by transposition of the characteristics of the liver.
Handy mentions such a case.