Abstract
Cytogenetic analysis of a malignant giant cell tumor of the sacrum from a 62-year-old female revealed the following chromosomal complement: 47,XX,−1,−11,+22,del(2)(p22),t(7;7) (p22;q32),+der(1)t(1;11;21)(p32;q13;q22),+der(19)t(19;?)(q13.4;?),der(8)t(8;?)(p11;?),der(7)t(17;?)(p13;?). Metaphase cells with 92–127 chromosomes sharing identical structural abnormalities detected in the near-diploid cells were also observed. Several of these abnormalities have previously been described in the benign giant cell tumors supporting a direct relationship between these benign and malignant neoplastic counterparts.
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