Doctors have removed what could be the world’s largest tumour – weighing in at an eye-watering 110kg.
Yang Jianbin, of Beijing, China, was born with a dark birth mark on the right side of his lower back/bottom.
When he was nine, the mark began to grow into a fleshy tumour. By his 12th birthday it had grown to the size of a fist and Yang received surgery to remove it.
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However, it quickly started to grow again.
Chief surgeon Chen Minliang explained Yang suffers from neurofibromatosis.
"We have seen neurofibromatosis patients before, but this is the biggest nerve tumor we ever saw," he said.
The giant tumor greatly affected Yang's life, with the 37-year-old revealing: "I can only lie down or sit on bed all day long."
The team of medics who removed the giant growth consisted of nine doctors and took 16 hours.
During the surgery Yang received more than 5000ml of blood, which is more than the entire amount an adult's body holds.
Yang is now recovering well and it expected to be discharged later this month.