J. Vanechten et al., CYTOGENETICS OF PRIMARY TESTICULAR NONSEMINOMA, RESIDUAL MATURE TERATOMA, AND GROWING TERATOMA LESION IN INDIVIDUAL PATIENTS, Cancer genetics and cytogenetics, 96(1), 1997, pp. 1-6
Residual mature teratoma (RMT) is often left behind when metastases of
primary nonseminomatous germ cell tumors (NSs) are treated with chemo
therapy. RMT is composed of fully differentiated somatic tissue. A gro
wing teratoma (GTE) lesion may occur after (incomplete) resection of R
MT. To shed light on tumor progression or the mechanism(s) of therapy
related differentiation we investigated the chromosomal pattern of the
primary NSs and RMTs in twelve patients, of the primary NS, RMT, and
GTE lesion in one patient, and of the RMT and GTE lesion in two patien
ts. Although several chromosomal differences ore observed between the
RMT and NSs and between the GTE and RMTs in the same patient, we obtai
ned no evidence that specific chromosomal alteration(s) play a role in
metastasis or differentiation. (C) Elsevier Science Inc., 1997.