Back in August 2007, I reported briefly on a Chinese man named Huang Chuncai who underwent surgery to remove a 20kg tumor on his face. The surgery was successful but due to the large size of the tumor, only a part of it was removed at that time.
Just a few days ago, Huang Chuncai went into the operating room again to remove another part of that facial tumor. This time, it was a large 4.5kg (9.9lb) chunk of flesh from his face. The tumor was originally 23kg in total.
If my calculations are correct, this still leaves 17.5kg of facial tissue from this tumor on his face (1kg was removed in the first surgery and 4.5kg was removed in the second surgery).
For those who are curious, Huang Chuncai suffers from Neurofibromatosis, a rare genetic disorder that causes growth on nerve tissues.