“…The incidence is greatest in the first 5 to 8 months (range, 1 to 36 months) (Gondolesi et al, 2004;Yazumi & Chiba, 2005;Kasahara et al, 2006). Recently, it has been suggested that prevalence continues to increase with time after transplantation , and that NAS presents earlier than AS, with mean time 3.3-5.9 months (Graziadei et al, 2006;Guichelaar et al, 2003). Moreover, NAS secondary to ischemic causes was shown to present within 1 year of the transplant, whereas the occurrence after 1 year was more often secondary to immunological causes .…”