Patients with cutaneous T-cell lymphoma [CTCL (mycosis fungoides or Sezary syndrome) stage IB to IVB are eligible. Patients with stage IB and IIA should be refractory to, intolerant to, or have reached a six-month or longer response plateau on at least two prior therapies from the following list: psoralen plus ultraviolet A irradiation (PUVA), ultraviolet B (UVB), electron beam therapy (EBT), photophoresis, interferon, systemic cytotoxic chemotherapy, topical nitrogen mustard, or topical carmustine (BCNU). One qualifying prior treatment must have been topical nitrogen mustard, topical carmustine or a phototherapy (UVB, PUVA or EBT). Topical steroids, systemic retinoids or biologicals do not qualify. Patients with stage IB or IIA who are not candidates for topical nitrogen mustard, topical carmustine or phototherapy (UVB, PUVA or EBT) are eligible for enrollment. Patients may not have received more than two systemic cytotoxic chemotherapy regimens. Steroids, retinoids, and biologic agents, will not be considered as systemic cytotoxic chemotherapy. Radiolabeled monoclonal antibody therapy is considered equivalent to a systemic cytotoxic chemotherapy regimen and must be counted toward the two prior systemic cytotoxic regimens. Patients with stage IIB-IVB who have had no more than 2 prior systemic cytotoxic chemotherapeutic regimens are eligible. There is no restriction regarding number of prior topical therapies, skin irradiation, or non-cytotoxic systemic therapies (i.e. PUVA, retinoids or biologic, with the exception of radiolabeled monoclonal antibody therapy) in this patient group. After 24 patients were enrolled in this arm, the arm was closed, and a replicate arm constituted of this same patient population was opened (Cohort 5).