Ayati, MTousi, V NajjaranSabokba, TVaziri-Nasab, HMehrkhani, FJamshidian, HDastan, JMosavi-Jarrahi, A RGhaffari, S R2009-05-272009-05-272008-10-05Ayati M, Tousi VN, Sabokba T, Vaziri-Nasab H, Mehrkhani F, Jamshidian H, Dastan J, Mosavi-Jarrahi AR, Ghaffari SR. Molecular cytogenetic analysis of urothelial carcinomas using urine samples. Asian Pacific Journal of Cancer Prevention. 2008 Oct-Dec; 9(4): 687-90http://imsear.searo.who.int/handle/123456789/38036Asian Pacific Journal of Cancer Prevention.Urinary cells obtained from voided urine specimens of 46 patients with urothelial carcinomas (UCs) and 10 normal individuals were analyzed with 3 different centromeric fluorescence in situ hybridization (FISH) probes. The overall sensitivity of cytology was 48.9% compared to 95.7%with the FISH technique. The minimum values were found for stage Ta and grade 1 (90.5 and 89.4) and sensitivity of FISH in other stages and grades was 100%. Chromosome 3 demonstrated the most frequent chromosomal abnormality in all samples (43%), followed by chromosome 17 (32%) and chromosome 7 (25%). There was a statistically significant association between the number of cell abnormalities in chromosome 17 and the tumour stage (p value=0.02). No relationship was found between the type of chromosomal abnormality and grade. Thus feasibility and reliability of a FISH based approach was confirmed for detection of UC in urine samples.engJournal Article