We commend Li et al.[1]for their article “Clinical characteristics of the patients with Hodgkin’s lymphoma involving extranodal sites” (published in the Chinese Journal of Cancer in July 2012). We agree that in comparison with extranodal non-Hodgkin’s lymphoma(NHL), the incidence of extranodal Hodgkin’s lymphoma(HL) is much rarer and thus described much less We commend Li et al. [1] for their article “Clinical characteristics of the patients with Hodgkin’s lymphoma involving extra sites” (published in Chinese Journal of Cancer in July 2012). We agree that in comparison with extranodal non-Hodgkin’s lymphoma (NHL), the incidence of extranodal Hodgkin’s lymphoma (HL) is much rarer and thus described much less