A spokesman for Sir Elton John has confirmed the singer is suffering from appendicitis.
The multi-award-winning artist had called in doctors after falling ill during his recent European tour. Following a number of exploratory scans and blood tests with his medical team in the UK, a diagnosis of appendix abscess surrounding retrocaecal appendicitis has been confirmed.
Sir Elton is currently undergoing a course of intensive antibiotics and is expected to undergo surgery in the UK in the coming weeks, once doctors can be confident they have sufficiently reduced toxins within the inflamed appendicitis site.
Sir Elton, 66, who regularly performs in excess of 120 concerts per year, has been advised by his doctors and surgical team to postpone all forthcoming shows from his current European tour (this includes the headline show due to take place at Hyde Park in London as part of the Barclaycard British Summer Time Festival this coming Friday).
The spokesman confirmed Sir Elton will not return to touring until he has fully recovered from both the planned surgery and any damage caused by the appendix abscess. He added, "Elton is incredibly disappointed to postpone these tour dates. To know that he made such super-human efforts and continued to perform to thousands through his illness only confirms his dedication to his European fans. He is eager to be back on top form and return to play the remaining shows starting in early September 2013."