PMID- 24467611 OWN - NLM STAT- MEDLINE DCOM- 20150317 LR - 20211021 IS - 1464-410X (Electronic) IS - 1464-4096 (Print) IS - 1464-4096 (Linking) VI - 114 IP - 6 DP - 2014 Dec TI - Subtyping of renal cortical neoplasms in fine needle aspiration biopsies using a decision tree based on genomic alterations detected by fluorescence in situ hybridization. PG - 881-90 LID - 10.1111/bju.12643 [doi] AB - OBJECTIVES: To improve the overall accuracy of diagnosis in needle biopsies of renal masses, especially small renal masses (SRMs), using fluorescence in situ hybridization (FISH), and to develop a renal cortical neoplasm classification decision tree based on genomic alterations detected by FISH. PATIENTS AND METHODS: Ex vivo fine needle aspiration biopsies of 122 resected renal cortical neoplasms were subjected to FISH using a series of seven-probe sets to assess gain or loss of 10 chromosomes and rearrangement of the 11q13 locus. Using specimen (nephrectomy)-histology as the 'gold standard', a genomic aberration-based decision tree was generated to classify specimens. The diagnostic potential of the decision tree was assessed by comparing the FISH-based classification and biopsy histology with specimen histology. RESULTS: Of the 114 biopsies diagnostic by either method, a higher diagnostic yield was achieved by FISH (92 and 96%) than histology alone (82 and 84%) in the 65 biopsies from SRMs (<4 cm) and 49 from larger masses, respectively. An optimized decision tree was constructed based on aberrations detected in eight chromosomes, by which the maximum concordance of classification achieved by FISH was 79%, irrespective of mass size. In SRMs, the overall sensitivity of diagnosis by FISH compared with histopathology was higher for benign oncocytoma, was similar for the chromophobe renal cell carcinoma subtype, and was lower for clear-cell and papillary subtypes. The diagnostic accuracy of classification of needle biopsy specimens (from SRMs) increased from 80% obtained by histology alone to 94% when combining histology and FISH. CONCLUSION: The present study suggests that a novel FISH assay developed by us has a role to play in assisting in the yield and accuracy of diagnosis of renal cortical neoplasms in needle biopsies in particular, and can help guide the clinical management of patients with SRMs that were non-diagnostic by histology. CI - (c) 2014 The Authors. BJU International published by John Wiley & Sons Ltd on behalf of BJU International. FAU - Gowrishankar, Banumathy AU - Gowrishankar B AD - CancerGenetics, Inc., Rutherford, NJ, USA. FAU - Cahill, Lynnette AU - Cahill L FAU - Arndt, Alexandra E AU - Arndt AE FAU - Al-Ahmadie, Hikmat AU - Al-Ahmadie H FAU - Lin, Oscar AU - Lin O FAU - Chadalavada, Kalyani AU - Chadalavada K FAU - Chaganti, Seeta AU - Chaganti S FAU - Nanjangud, Gouri J AU - Nanjangud GJ FAU - Murty, Vundavalli V AU - Murty VV FAU - Chaganti, Raju S K AU - Chaganti RS FAU - Reuter, Victor E AU - Reuter VE FAU - Houldsworth, Jane AU - Houldsworth J LA - eng GR - P30 CA008748/CA/NCI NIH HHS/United States GR - R44 CA134103/CA/NCI NIH HHS/United States GR - CA134103/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20140715 PL - England TA - BJU Int JT - BJU international JID - 100886721 SB - IM MH - Biopsy, Fine-Needle/*methods MH - Chromosome Aberrations MH - Decision Trees MH - Diagnosis, Computer-Assisted/*methods MH - Female MH - Genomics/*methods MH - Humans MH - In Situ Hybridization, Fluorescence MH - Kidney Neoplasms/*classification/genetics/*surgery MH - Male PMC - PMC4257075 OTO - NOTNLM OT - algorithm OT - classification OT - fine needle aspiration biopsies OT - fluorescence in situ hybridization OT - oncocytoma OT - renal cell carcinoma EDAT- 2014/01/29 06:00 MHDA- 2015/03/18 06:00 CRDT- 2014/01/29 06:00 PHST- 2014/01/29 06:00 [entrez] PHST- 2014/01/29 06:00 [pubmed] PHST- 2015/03/18 06:00 [medline] AID - 10.1111/bju.12643 [doi] PST - ppublish SO - BJU Int. 2014 Dec;114(6):881-90. doi: 10.1111/bju.12643. Epub 2014 Jul 15.