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Comparison of treatment responses of PENL and NL groups according to the treatment regimen.
a)7 patients were not evaluated (4 in the PENL and 3 in the NL group), b)Fisher's exact test.
Abbreviations: PENL, primary extranodal lymphoma; NL, nodal lymphoma; CHOP, cyclophosphamide, doxorubicin, vincristine, and prednisone; R-CHOP, rituximab-CHOP; CR, complete response; PR, partial response; OR, overall response.
