liver-versary
n.— «She was given a new lease on life when she became one of the first patients in London to receive a liver transplant.…Fisher recently marked the 25th anniversary of her transplant —”liver-versary,” as she calls it.» —“Sign donor cards, she urges” by Joe Matyas London Free Press (Ontario, Canada) Apr. 28, 2008. (source: Double-Tongued Dictionary)