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The spectrum of cytogenetic chages in polyps of large bowel with different histologic structure

Lozynska M.R.

 


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Cytogenetical study of colorectal polyps of different histological structures from 54 patients has been carried out. Domination of diploid karyotypes was shown. Abnormal karyotypes were found in 17 (31,5 %) polyps: the most frequent anomalies were in adenoma while in hamartomatous polyps they were absent. The typical features of the karyotypes were numeric changes, such as additional copies of chromosomes 13, 7, 20, 18, 16 in some combinations. The polyps with high-grade dysplasia in all cases had abnormal karyotypes. Combinations of additional copies of chromosomes 13, 18, and 20 were observed in adenoma with dysplasia located near adenocarcinoma. We have studied the karyotype pecularities exactly in inflammatory polyps unlike the previous studies of ulcerative colitis, Cronhs disease and found 21,4 % chromosomal anomalies.

Tsitologiya i Genetika 2008, vol. 42, no. 6, pp. 43-49

E-mail: rlozynsky lviv.gu.net

Lozynska M.R. The spectrum of cytogenetic chages in polyps of large bowel with different histologic structure, Tsitol Genet., 2008, vol. 42, no. 6, pp. 43-49.




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