CYTOGENETIC REPORT OF A MALE BREAST-CANCER

The cytogenetic findings on G-banding in an infiltrating ductal breast carcinoma in a 69-year-old man are reported. The main abnormalities o bserved were trisomy of chromosomes 8 and 9 and structural rearrangeme nt in the long arm of chromosome 17 (add(17)(q25)). Our results confir m the trisomy of chromosome 8 in the characterization of the subtype o f ductal breast carcinomas and demonstrate that chromosome 17, which i s frequently involved in female breast cancers, is also responsible fo r the development or progression of primary breast cancers in males.