In St. Peter's Basilica, the tomb of Pope Pius X is opened up so his coffin can be exhumed and his body examined in the Chapel of the Holy Crucifix. This is done as part of the apostolic process of moving Pius X towards beatification.
According to the examiners, the body of Pope Pius X is "remarkably well preserved" despite having been buried for 30 years and, in accordance with this wishes, not having been embalmed. Jerome Dai-Gal reports that "all of the body" of Pope Pius X "was in an excellent state of conservation."
His body lies exposed for 45 days and Pope Pius XII gives him the title "Venerable Servant of God." After this, the process towards beatification can begin.