Inclusion Criteria:

- Patients may have a Wilms tumor, Ewing Sarcoma, Rhabdomyosarcoma or any other
metastatic pediatric malignancy; patients may have a single or multiple pulmonary
metastases at the time of diagnosis or at the time of recurrence; a pulmonary
metastasis may be defined as one pulmonary nodule >= 1 cm or more than one pulmonary
nodules >= 0.5 cm; a biopsy of the nodules may be considered in case of doubt

- The Karnofsky performance status must be >= 50 for patients > 16 years of age and the
Lansky performance status must be >= 50 for patients =< 16 years of age

- Patients must not have received prior radiation therapy to any part of the thorax

- Adequate cardiac function defined as:

- Shortening fraction of >= 27% by echocardiogram, or

- Ejection fraction of >= 50% by radionuclide angiogram

- Female patients of childbearing age must have a negative pregnancy test

- Female patients who are lactating must agree to stop breast-feeding

- Sexually active patients of childbearing potential must agree to use effective
contraception

Exclusion Criteria:

- Patients enrolled on Children's Oncology Group protocols cannot be treated with whole
lung IMRT on this study

- Patients who have a prior history of radiation therapy to the thorax or adjacent
regions cannot be entered on this protocol

- Patient with Hodgkin's Lymphoma are not eligible for this study

- Patients with mediastinal masses or other pulmonary masses requiring additional
mediastinal or lung irradiation beyond the whole lung irradiation (WLI) doses stated
in this protocol are ineligible for this study

- Patients who may require concurrent or sequential irradiation to sites beyond the
chest such as the neck, flank, abdomen or liver are eligible for this study