in italy members of the mafia are charged with mafia association (a sort of RICO)and if they are particularly dangerous they get 41 bis the maxim security prisons
who is charged for mafia association is usually charged with other crimes too like drugs, weapons, extortions, murder and so on
the sentences varies it depends for drugs are usually by far lower than states but for other crimes are the same
the difference is that in italy i think is by far easier to get out of prison for health problems and other things in fact even sentenced for life mafia boss can get out sometimes