It's happened! One person in four has one or more miniature spleens. After therapeutic splenectomy, they regrow sometimes as big as the original, frustrating the surgeon -- or if the spleen is removed because of accidental injury, it's good news.
It certainly. Can.
No.. The spleen will not regenerate following its removal. However, if the spleen is shattered, sometimes a small piece may remain in the abdominal cavity and develop a new blood supply. Also, some people are born with accessory spleens that can become more functional after splenectomy.