Stereotactic Radiosurgery in Treating Patients With Liver Metastases, Lung Metastases, or Other Advanced Solid Tumors

DISEASE CHARACTERISTICS:

* Histologically or cytologically confirmed malignancy

  * Extracranial recurrent or metastatic disease or primary tumor not predicted to be controlled with standard radiotherapy
  * Incurable with any standard therapy
* No tumors involving critical structures (e.g., mucosal surfaces (bowel or bladder) or heart)
* Tumor visible by CT scan

PATIENT CHARACTERISTICS:

Age:

* Not specified

Performance status:

* Karnofsky 60-100%

Life expectancy:

* Not specified

Hematopoietic:

* Not specified

Hepatic:

* Bilirubin less than 2.0 times upper limit of normal (ULN)
* AST and ALT less than 5 times ULN

Renal:

* Creatinine less than 2.0 mg/dL

Pulmonary:

* FEV1 greater than 0.75 L

Other:

* No unsuitable size or geometric proportion that would preclude stereotactic immobilization
* Not pregnant or nursing
* Fertile patients must use effective contraception

PRIOR CONCURRENT THERAPY:

Biologic therapy:

* At least 14 days since prior anticancer biologic therapy and recovered

Chemotherapy:

* At least 14 days since prior anticancer chemotherapy and recovered

Endocrine therapy:

* At least 14 days since prior anticancer endocrine therapy and recovered

Radiotherapy:

* See Disease Characteristics
* At least 14 days since prior anticancer radiotherapy and recovered

Surgery:

* Not specified