PRL and diffuse large B-cell lymphoma: The results of multivariable analysis further demonstrated the correlations between worse survival for patients with PRL and older age (>80 years old vs <60 years old: HR = 3.34, p < 0.001), male gender (HR = 1.38, p = 0.005), diagnosis before 2000 (HR = 1.40, p = 0.007), advanced stage (HR = 1.39, p = 0.004), not receiving treatment with surgery (HR = 1.50, p = 0.001) and the histologic subtype of DLBCL (HR = 2.48, p = 0.002) or T/NK cell lymphoma (HR = 4.37, p = 0.021) (Table 3).