PMID- 26208279 OWN - NLM STAT- MEDLINE DCOM- 20160505 LR - 20200306 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 7 DP - 2015 TI - Immunohistochemistry and Fluorescence In Situ Hybridization Can Inform the Differential Diagnosis of Low-Grade Noninvasive Urothelial Carcinoma with an Inverted Growth Pattern and Inverted Urothelial Papilloma. PG - e0133530 LID - 10.1371/journal.pone.0133530 [doi] LID - e0133530 AB - Urothelial carcinoma (UC) comprises a heterogeneous group of epithelial neoplasms with diverse biological behaviors and variable clinical outcomes. Distinguishing UC histological subtypes has become increasingly important because prognoses and therapy can dramatically differ among subtypes. In clinical work, overlapping morphological findings between low-grade noninvasive UC (LGNUC), which exhibits an inverted growth pattern, and inverted urothelial papilloma (IUP) can make subclassification difficult. We propose a combination of immunohistochemistry (IHC) and molecular cytogenetics for subtyping these clinical entities. In our study, tissue microarray immunohistochemical profiles of Ki-67, p53, cytokeratin 20 (CK20) and cyclinD1 were assessed. Molecular genetic alterations such as the gain of chromosomes 3, 7 or 17 or the homozygous loss of 9p21 were also assessed for their usefulness in differentiating these conditions. Based on our analysis, Ki-67 and CK20 may be useful for the differential diagnosis of these two tumor types. Fluorescence in situ hybridization (FISH) can also provide important data in cases in which the malignant nature of an inverted urothelial neoplasm is unclear. LGNUC with an inverted growth pattern that is negative for both Ki-67 and CK20 can be positively detected using FISH. FAU - Sun, Juan-Juan AU - Sun JJ AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Institute of Pathology, Fudan University, Shanghai, China. FAU - Wu, Yong AU - Wu Y AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Institute of Pathology, Fudan University, Shanghai, China. FAU - Lu, Yong-Ming AU - Lu YM AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China. FAU - Zhang, Hui-Zhi AU - Zhang HZ AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China. FAU - Wang, Tao AU - Wang T AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Institute of Pathology, Fudan University, Shanghai, China. FAU - Yang, Xiao-Qun AU - Yang XQ AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Institute of Pathology, Fudan University, Shanghai, China. FAU - Sun, Meng-Hong AU - Sun MH AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Institute of Pathology, Fudan University, Shanghai, China. FAU - Wang, Chao-Fu AU - Wang CF AD - Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China; Institute of Pathology, Fudan University, Shanghai, China. LA - eng PT - Journal Article DEP - 20150724 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Biomarkers, Tumor) SB - IM MH - Biomarkers, Tumor MH - Carcinoma/*diagnosis/mortality MH - Diagnosis, Differential MH - Humans MH - Immunohistochemistry MH - In Situ Hybridization, Fluorescence MH - Kaplan-Meier Estimate MH - Neoplasm Grading MH - Papilloma, Inverted/*diagnosis MH - Prognosis MH - Urologic Neoplasms/*diagnosis/mortality PMC - PMC4514649 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/07/25 06:00 MHDA- 2016/05/06 06:00 PMCR- 2015/07/24 CRDT- 2015/07/25 06:00 PHST- 2015/01/15 00:00 [received] PHST- 2015/06/28 00:00 [accepted] PHST- 2015/07/25 06:00 [entrez] PHST- 2015/07/25 06:00 [pubmed] PHST- 2016/05/06 06:00 [medline] PHST- 2015/07/24 00:00 [pmc-release] AID - PONE-D-14-58020 [pii] AID - 10.1371/journal.pone.0133530 [doi] PST - epublish SO - PLoS One. 2015 Jul 24;10(7):e0133530. doi: 10.1371/journal.pone.0133530. eCollection 2015.