PMID- 21088148 OWN - NLM STAT- MEDLINE DCOM- 20101214 LR - 20151119 IS - 1943-7722 (Electronic) IS - 0002-9173 (Linking) VI - 134 IP - 6 DP - 2010 Dec TI - Molecular and immunohistologic analyses cannot reliably solve diagnostic variation of flat intraepithelial lesions of the urinary bladder. PG - 862-72 LID - 10.1309/AJCPACNUDWEN9GN4 [doi] AB - We examined diagnostic variation of flat intraurothelial lesions with comparison with immunohistochemical and fluorescence in situ hybridization (FISH) analyses. Nine uropathologists diagnosed 23 biopsy samples from the urinary bladder. The samples were analyzed by immunohistochemical expression of cytokeratin 20, high-molecular-weight cytokeratin, Ki-67, p53, and p16(INK4a), and multicolor FISH using the UroVysion probe set (Vysis, Abbott, Des Plaines, IL). Diagnostic agreement for each classification and for nonneoplastic or neoplastic lesions was obtained in 8 (35%) and 16 (70%) of 23 lesions, respectively. The preference ratio of neoplasia to nonneoplasia (0.9 to 4.8) or carcinoma in situ to dysplasia (0.2 to 4.0) also varied among the pathologists. In 6 ancillary analyses, the majority of neoplastic lesions with diagnostic agreement indicated more than 2 aberrant results, whereas the majority of lesions without diagnostic agreement showed no or only 1 aberrant result. The molecular and immunohistochemical analyses can discriminate between neoplastic and nonneoplastic lesions; however, they cannot reliably solve diagnostic variation of flat intraepithelial lesions. FAU - Murata, Shin-ichi AU - Murata S AD - Department of Pathology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka-shi, Saitama-ken, 350-1298, Japan. FAU - Iseki, Masachika AU - Iseki M FAU - Kinjo, Mitsuru AU - Kinjo M FAU - Matsuzaki, Osamu AU - Matsuzaki O FAU - Moriuchi, Akira AU - Moriuchi A FAU - Ohtani, Hiroshi AU - Ohtani H FAU - Sakurai, Takaki AU - Sakurai T FAU - Satake, Tatsunari AU - Satake T FAU - Tsuzuki, Toyonori AU - Tsuzuki T LA - eng PT - Journal Article PL - England TA - Am J Clin Pathol JT - American journal of clinical pathology JID - 0370470 RN - 0 (Biomarkers, Tumor) RN - 0 (Cyclin-Dependent Kinase Inhibitor p16) RN - 0 (DNA, Neoplasm) RN - 0 (Keratin-20) RN - 0 (Ki-67 Antigen) RN - 0 (Tumor Suppressor Protein p53) SB - IM MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/genetics/metabolism MH - Biopsy MH - Carcinoma in Situ/*diagnosis/genetics/metabolism MH - Carcinoma, Papillary/*diagnosis/genetics/metabolism MH - Carcinoma, Transitional Cell/*diagnosis/genetics/metabolism MH - Cyclin-Dependent Kinase Inhibitor p16/metabolism MH - DNA, Neoplasm/genetics MH - Female MH - Humans MH - Immunohistochemistry/methods MH - In Situ Hybridization, Fluorescence/methods MH - Keratin-20/metabolism MH - Ki-67 Antigen/metabolism MH - Male MH - Middle Aged MH - Observer Variation MH - Precancerous Conditions/*diagnosis/genetics/metabolism MH - Reproducibility of Results MH - Tumor Suppressor Protein p53/metabolism MH - Urinary Bladder Neoplasms/*diagnosis/genetics/metabolism MH - Urothelium/metabolism/*pathology EDAT- 2010/11/23 06:00 MHDA- 2010/12/16 06:00 CRDT- 2010/11/20 06:00 PHST- 2010/11/20 06:00 [entrez] PHST- 2010/11/23 06:00 [pubmed] PHST- 2010/12/16 06:00 [medline] AID - 134/6/862 [pii] AID - 10.1309/AJCPACNUDWEN9GN4 [doi] PST - ppublish SO - Am J Clin Pathol. 2010 Dec;134(6):862-72. doi: 10.1309/AJCPACNUDWEN9GN4.