Resectable residual or recurrent disease. Patients in the occult arm (Arm 1) must have no visible residual disease in the abdomen at the time of the last surgical exploration. In addition, there must be no imageable definitive site of recurrent disease using conventional imaging modalities including; CT scan of chest/ abdomen/ pelvis with contrast, MRI scan, and chest x-ray. Patients in arm 2 may have a single site of recurrent or metastatic disease which is resectable but in whom additional sites of disease are not known and no imageable disease other than a solitary site of potentially resectable disease is identified.