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28 November 2014 Last updated at 10:33 GMT
Myles Bradbury, of Herringswell, Suffolk, admitted abusing 18 children in his care at Addenbrooke's Hospital, Cambridge, between 2009 and 2013.
The 41-year-old arrived at Cambridge Crown Court at just after 08:00 GMT, six hours before the start of his two-day hearing.
He ignored questions from the BBC as he walked into court.
A child cancer specialist who abused 18 boys in his care has arrived in court to be sentenced.