Inclusion Criteria

Patients must have:

• HIV positivity by ELISA confirmed by Western blot.
• AIDS-related NHL that is refractory or relapsed.
• Life expectancy of at least 12 weeks.

Exclusion Criteria

Co-existing Condition:

Patients with the following symptoms and conditions are excluded:

• Concomitant malignancy OTHER THAN curatively treated carcinoma in situ of the cervix; basal or squamous cell carcinoma of the skin; or non-active, non-visceral Kaposi's sarcoma not requiring active chemotherapy.
• Active uncontrolled bacterial infection, viral infection (other than herpes simplex), or fungal infection (other than oropharyngeal candidiasis) that requires treatment within 2 weeks of study entry.
• Significant cardiovascular disease.

Concurrent Medication:

Excluded:

• Hormonal therapy (except medications given for muscle wasting, such as testosterone or Megace).
• Other chemotherapy.
• Investigational anti-cancer drugs.

Concurrent Treatment:

Excluded:

• Concomitant radiation to sites other than CNS.

Patients with the following prior conditions are excluded:

Prior malignancy OTHER THAN curatively treated carcinoma in situ of the cervix; basal or squamous cell carcinoma of the skin; or non-active, non-visceral Kaposi's sarcoma not requiring active chemotherapy.

Recommended:

• Prophylaxis for PCP and oral candidiasis.

Required in patients with leptomeningeal disease:

• Intrathecal methotrexate or cytarabine (Ara-C).
• Leucovorin.

Required in patients with leptomeningeal disease:

Cranial radiation to a helmet field.