PARALLEL KARYOTYPIC EVOLUTION AND TUMOR PROGRESSION IN UTERINE LEIOMYOMA

被引:28
作者
PANDIS, N
HEIM, S
BARDI, G
FLODERUS, UM
WILLEN, H
MANDAHL, N
MITELMAN, F
机构
[1] UNIV LUND HOSP,DEPT CLIN GENET,S-22185 LUND,SWEDEN
[2] UNIV LUND HOSP,DEPT GYNECOL,S-22185 LUND,SWEDEN
[3] UNIV LUND HOSP,DEPT CLIN PATHOL,S-22185 LUND,SWEDEN
关键词
D O I
10.1002/gcc.2870020409
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Cytogenetic evidence of clonal evolution was detected in five uterine leiomyomas. In two tumors, two clones were found, the third tumor had four, the fourth had nine, and the fifth had 12 clones. The first tumor had trisomy 12 as the primary anomaly and a sideline that also contained a del(7)(q21q31). Both clones of the second tumor had three structural changes in common but differed by the presence in the more advanced clone of an inv(7)(q31q34). Two cytogenetically unrelated pairs of clones were seen in the third tumor: One clone had a stemline of 46 and an r(1); a sideline had developed through duplication of this clone. The other pair had a del(7)(q21q31) in common. The last two tumors both had t(12;14)(q14–15;q23–24) as the primary abnormality. They also had a high frequency of telomeric associations that involved certain chromosome arms only. One of the secondary changes in the fourth tumor was a del(7)(q21q31); the principal secondary change in the fifth case was a ring chromosome 1 of variable size in the different clones. The analysis of these five uterine leiomyomas and the collation of the results with previously obtained data lead us to conclude that del(7)(q21q31) is secondary to t(12;14) and +12 in this tumor type, and that ring formation involving chromosome 1 material, often with duplication of segments, is a common phenomenon during clonal evolution. The fact that the tumors were classified as cellular and had an increased mitotic rate indicates a parallel development between histologically detectable tumor progression and cytogenetically recognizable clonal evolution in uterine leiomyomas. Copyright © 1990 Wiley‐Liss, Inc., A Wiley Company
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页码:311 / 317
页数:7
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