but did they miss one cancer cell?.....most probably

Here, we see two surgeons lying down on the floor after 32 hours of brain surgery, during which they only took small breaks. Helped by another surgeon, six anesthesiologists, and eight nurses, they managed to successfully remove a series of brain tumors from a patient. The pinnacle of medical skill pushed well and beyond the normal human limit: lying exhausted on the floor, but still holding a victory sign.
The marathon procedure was mandatory, because as one of the surgeons, Dr. Chen Jianping, explains, all the tumors needed to be removed in one go.
“The patient had both an aneurysm and brain-stem hemangioblastoma. We needed to remove both tumors in one surgery. This required six different surgical procedures to be conducted on the patient. It can be difficult, risky, and time-consuming. If you are removing one tumor, and the other one breaks, it can be fatal.”
Each of the three surgeons just took two one-hour breaks during the gruesome 32 hours, pushing themselves to the point where hospital staff, as well as the patient’s family, were worried they just wouldn’t make it. But they did.