An 18-year-old patient who was carrying a tumour weighing 12 kg underwent a successful surgery at SGRH in Delhi, making it the largest in-situ (inside body) so far, said the hospital authorities. According to SGRH, largest tumour earlier reported was by University of Miami, US in 2014. Dr Gupta ran the risk of his tumour extending till pelvis, abdomen, knee joint or even back.