Meaning of variable 'liverlist' in the code

[XingRenEr]

there is a variable liverlist = [32, 34, 38, 41, 47, 87, 89, 91, 105, 106, 114, 115, 119] I want to know the meaning of that variable.

[xmengli]

In this index, the volume just contains the liver without tumor.