DISEASE CHARACTERISTICS: Persistent febrile neutropenia associated with 1 of the following within 3 months prior to entry: Cytotoxic chemotherapy Bone marrow transplantation Neutropenia defined as either: ANC no greater than 500/mm3 ANC no greater than 1,000/mm3 and expected to decrease to 500/mm3 or less within 2 days after entry Persistent continuous or spiking fever of at least 38 C No association with administration of pyrogenic substances No response to at least 72 hours of empiric, broad-spectrum antibacterial therapy No microbiologically documented source of infection At least 30 days since documented invasive fungal infection

PATIENT CHARACTERISTICS: Age: 2 and over Performance status: Not specified Life expectancy: At least 28 days Hematopoietic: Not specified Hepatic: No grade 2 or greater hepatic impairment Renal: No grade 2 or greater renal impairment No peritoneal dialysis or hemodialysis Other: No history of severe allergic reaction to polyene antifungal agent No pregnant or nursing women Negative pregnancy test required of fertile women Effective contraception required of fertile women during and for 3 months after study

PRIOR CONCURRENT THERAPY: At least 2 weeks since polyene antifungal therapy Concurrent oral prophylactic antifungal therapy with an azole antifungal agent (e.g., fluconazole, itraconazole) allowed if patient remains febrile No concurrent azole therapy At least 30 days since other investigational drug or device except investigational formulation of amphotericin B