History does not reveal much more of significance. He has not been abroad in the last 2 years.
Examination reveals a palpable 2x2cm left axillary node, as well as splenomegaly. No rashes.
His renal and liver function are normal. LDH is elevated at 600 U/L.
CT neck/chest/abdomen/pelvis shows lymphadenopathy in both axilla and left inguinal region and a 18cm spleen.
Left axillary node core biopsy is diagnostic for peripheral T-cell lymphoma, not otherwise specified (NOS).
What would you do next?