We report the cytogenetic analysis of 124 adult male germ cell tumors ascertained consecutively at the Memorial Sloan-Kettering Cancer Center between 1988 and 1990. Biopsies from testicular and extragonadal pri mary and metastatic lesions studied included all histolÃ3gica!subtypes of germ cell tumors and cases of malignant transformation. Nonrandom numerical and structural chromosomal abnormali...
