“…For nonmelanoma skin cancers and lip cancer, the relative risks are increased 10-to 60-fold (Kinlen et al, 1979;Birkeland et al, 1995;Adami et al, 2003), while the excess of non-Hodgkin's lymphoma (NHL) is about five-to 10-fold (Hoshida et al, 1997;Birkeland et al, 2000;Adami et al, 2003). Kaposi's sarcoma (KS) has been frequently reported in transplant patients in the United States (Penn, 2000), in the Middle East (Qunibi et al, 1988) and in Italy (Montagnino et al, 1996;Pedotti et al, 2003), but the excess risk has not been closely quantified. No increased risk of KS has been reported in transplant patients from the Nordic countries (Birkeland et al, 1995(Birkeland et al, , 2000Adami et al, 2003), or Japan (Hoshida et al, 1997).…”