“…Heterogeneity in the type, the dose and duration of immunomodulatory therapy may be responsible for this discrepancy (Xie & Itzkowitxz, 2008). The association between Crohn's disease and lymphoma is confirmed by numerous case reports (Perosio et al, 1992;Brown et al, 1992;Vazquez et al, 1993;Vanbockrijck et al, 1993;Larvol et al, 1994;Veldman et al, 1996;Kelly et al, 1997;Woodley et al, 1997;Charlotte et al, 1998;Kashyap et al, 1998;Parasher et al, 1999;Musso et al, 2000;Li et al, 2001;Martinez Tirado et al, 2001;Calvo-Villas et al, 2003;Hall et al, 2003;Sivarajasingham et al, 2003;Losco et al, 2004;Garcia-Sanchez et al, 2006;). In 60% of cases, lymphomas occur in the small and large intestine ( Figure 5, 6).…”