Recurrent endometrial adenocarcinoma with rearrangement of chromosomes 1 and 11.

A chromosome study was performed in a recurrent endometrial cancer. The cytogenetic analysis performed with a quinacrine-Hoechst banding technique revealed rearrangements of chromosomes #1 and #11 [i.e.: der(11),t(1;11)(q21;q23)], which was found in all metaphases. In addition, a deletion of chromosome 6(q21), trisomy of chromosomes #7 and #10, monosomy X, and -4 as the clonal changes. Partial trisomy for a long arm of chromosome #1 also was observed in almost all analyzed metaphases (11 of 12 cells). These data showed the association of rearrangement of 1q in endometrial cancer and/or redevelopment of tumor, and also suggest the possible participation of chromosome #11 on which the human proto-oncogene c-ets was mapped.