How did bin laden get dialysis treatment for his kidney problem for 6 years without anyone spotting him?

Back in 2001 or 2002, the Pakistani President said that Osama had died from kidney failure... Then the American Media said that Osama had died in a raid, in December of 2001, in the Tora Bora Mountains. Now the American Media are reporting that he was killed in another raid done at HIS HOUSE! His flippin' HOUSE that was right next to a Military base and in a Tourist City! Most People have the attention span of a Gold Fish...