a) Minimal extra-abdominal tumor as the sole site of disease and a serum LDH less than 1.5 times the upper limit of normal (NIH patients, less than 350 U/L) or except those with b) completely resected small, localized abdominal mass (involved segmental lymph nodes permitted) and a serum LDH level less than 1.5 times upper limit of normal (NIH patients less than 350 U/L).