From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Planet Pital (ピタル 惑星, Pitaru Wakusei) is a planet in the North Galaxy.
Planet Pital's name is a pun on the word Hospital.
Dragon Ball GT
Planet Pital appeared during the Black Star Dragon Ball Saga. It was the homeworld of the Pital. Son Goku was too scared to go inside due to his fear of needles, but Trunks Brief and Son Pan convinced him to go in even though he spent most of his time there hiding under a chair.