Inclusion Criteria:

- Malignant Diseases:

- Ewing's sarcoma/PNET:

- CR1 - Metastatic disease at diagnosis, tumor volume > 100 ml, pelvic bone
primary

- CR2 - Locally recurrent disease

- Soft tissue sarcoma

- CR1 - Metastatic disease at diagnosis or locally advanced disease where
local control is suboptimal (i.e., inability to provide radiation therapy
due to extent of disease).

- CR2 - Locally recurrent disease (VGPR2 acceptable)

- Hepatoblastoma:

- VGPR1 - Patients with metastatic disease at diagnosis who have a
persistently elevated alpha FP, or unresectable primary as a way of
converting to resectable.

- CR2/VGPR2

- Hodgkin's Disease:

- VGPR1 - Progression on primary therapy/Refractory disease

- CR2/VGPR2

- Germ Cell Tumor:

- CR2/VGPR2 - recurrent disease

- Wilms Tumor:

- CR2/VGPR2 - recurrent disease

- IRB approved signed written informed consent by patient and/or their legally
authorized guardian.

- Patients 21 years of age or younger at initial diagnosis, with older patients
considered individually for primary pediatric disease diagnosis.

- Adequate central venous access (double lumen CVL or 2 single lumen PCVC).

- Adequate PBSC harvests with a minimum of 2.0 x 108 MNC/kg available for each PBSC
rescue.

- Organ Function:

- Platelets > 50,000/ml

- SGOT < 10 x upper limits of normal

- Creatinine < 1.5 x normal baseline

- Normal cardiac function in accordance with institutional policies

- Normal pulmonary function in accordance with institutional policies.

- Physiologic status:

- No active infections

- Adequate performance status as measured by Karnofsky (> 70%) or Lansky scale (>
60%) as appropriate for age.

- Bone Marrow Status

- No evidence of morphologic involvement with tumor at the time of transplant

Off Study Criteria:

- Severe toxicity. Contact the Study Coordinator immediately and complete Adverse
Reaction Form.

- Disease progression or relapse prior to PBSC #1 or between PBSC rescue # 1 and #2.

- Inability to collect adequate numbers of PBSC for successful transplantation.

- Patient or parent/guardian refusal to remain on study.