PMID- 14963351 OWN - NLM STAT- MEDLINE DCOM- 20040803 LR - 20061115 IS - 0042-1138 (Print) IS - 0042-1138 (Linking) VI - 72 IP - 2 DP - 2004 TI - Examination of tumorigenesis of precursor lesions in bladder cancer by in situ hybridization. PG - 118-22 AB - Through examinations using fluorescence in situ hybridization (FISH) of chromosomes 1 and 9, we tried to obtain more information on dysplasia and carcinoma in situ (Cis) in relation to the oncogenesis of bladder cancer. 63 paraffin sections (dysplasia grades I-III and Cis) were evaluated, and 8 negative sections functioned as a control group. For FISH, DNA samples of CEP 1 and 9 (alpha satellites) were chosen. Gains (aneuploidy) or losses (monosomy) of chromosomal material were determined microscopically. Dysplasia grades I-III showed a 5-18% aberration in chromosome 1 aneuploidy and a 19-29% aberration in monosomy 9. Cis revealed 27% aneuploidy of chromosomes 1 and 9. Although at present dysplasia grade III and Cis of the bladder are viewed as histopathologically identical, we examined both molecular genetic differences in chromosome 9. As referred to in the literature we found the same genetic aberrations for dysplasias (grades I-III) and noninvasive papillary bladder tumors as well as for Cis and solid invasive bladder cancer. CI - Copyright 2004 S. Karger AG, Basel FAU - Krause, Steffen AU - Krause S AD - Department of Urology, Friedrich Alexander University, Erlangen-Nurnberg, Germany. frens.steffen.krause@t-online.de FAU - Feil, Gerhard AU - Feil G FAU - Beiter, Thomas AU - Beiter T FAU - Pressler, Harald AU - Pressler H FAU - Schrott, Karl M AU - Schrott KM FAU - Bichler, Karl-Horst AU - Bichler KH LA - eng PT - Journal Article PL - Switzerland TA - Urol Int JT - Urologia internationalis JID - 0417373 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Aneuploidy MH - Carcinoma in Situ/*genetics/pathology MH - *Chromosome Aberrations MH - Chromosomes, Human, Pair 9 MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Middle Aged MH - Retrospective Studies MH - Urinary Bladder/pathology MH - Urinary Bladder Neoplasms/*genetics/pathology EDAT- 2004/02/14 05:00 MHDA- 2004/08/04 05:00 CRDT- 2004/02/14 05:00 PHST- 2003/07/02 00:00 [received] PHST- 2003/09/19 00:00 [accepted] PHST- 2004/02/14 05:00 [pubmed] PHST- 2004/08/04 05:00 [medline] PHST- 2004/02/14 05:00 [entrez] AID - 75964 [pii] AID - 10.1159/000075964 [doi] PST - ppublish SO - Urol Int. 2004;72(2):118-22. doi: 10.1159/000075964.