Detection of renal pelvic tumor using fluorescence in situ hybridization technique

Abstract

Objective To investigate the feasibihty and effectiveness of the fluorescence in situ hybridization(FISH)technique in the diagnosis of renal pelvic tumor.Methods FISH technique were used to detect the abnormalities of chromosome 3,7,17 and 9 p16 from 20 people without malignancy.The morning's first urine were availahled from 15 patients with hematuria and suspected of renal mass by imaging,then were studied by FISH technique and urine cytology respectively.The sample was considered positive if two or more probes results were higher than the criteria,or one probe had two or more abnormal results.Results Eight of 15 patients with hematuria were renal pelvic urothehal carcinoma,5 were renal clear cell carcinoma,1 was renal chromophobe cell carcinoma,1 was xanthogranulomatous pyelonephritis,confirmed by pathology.All of the 8 renal pelvic carcinoma were considered positive by FISH technique,while only 1 was considered positive by urine cytology.The variation rate of chromosome 3,7,17 were 100%(8/8)and chromosome 9 p16 was 75%(6/8).Six of 7 non-renal pelvic carcinoma were negative by FISH technique,but all Were negative by urine cytology.Conclusion FISH technique is a non-invasive and effective method for the diagnosis of renal pelvic tumor,and it's more sensitive than urine cytology. Key words: Kidney neoplasms; In situ hybridization,fluorescence; Cytology