The act of removing the tumor was as standard, but the difficulty was completely different.
The simplest of all tumor removals was the removal of benign tumor on the skin. Perhaps it would disappear without any dignity once someone grabbed it and plucked it off.
Benign tumors in the body were more complicated. For doctors, the main problem was their location and size.
The worst position of a tumor would be at the brain, and many benign tumors in the brain could lead to death. Removing it was even riskier. Some of them were located too deeply inside the brain, and there was basically no reason for the patient to receive treatment anymore.
However, the size of the tumor was actually more important than its location.