Intrahepatic splenosis in a dog.

A 10-year-old castrated male Standard Poodle presented with an acute onset of lethargy and abdominal pain. The animal had a history of traumatic splenic rupture requiring splenectomy 5 years previously. Surgical exploration revealed multiple cystic red nodules involving all liver lobes, several of which were submitted for histopathology. Microscopically, the cystic nodules were dilated bile ducts and lymphatics surrounded by ectopic splenic tissue. A diagnosis of intrahepatic splenosis was made.