PMID- 32695659 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 2234-943X (Print) IS - 2234-943X (Electronic) IS - 2234-943X (Linking) VI - 10 DP - 2020 TI - Myb Immunohistochemical Staining and Fluorescence in situ Hybridization in Salivary Rare Basaloid Lesions. PG - 870 LID - 10.3389/fonc.2020.00870 [doi] LID - 870 AB - Objective: Salivary rare basaloid lesions, including cribriform type basal cell adenoma (cBCA), BCA with incomplete capsule (iBCA), sialoblastoma (SB), and intercalated duct hyperplasia (IDH), could easily be misdiagnosed as adenoid cystic carcinoma (AdCC). We aim to identify an approach for differential diagnosis and to establish an optimal workflow concerning the diagnosis of these lesions. Material and methods: A panel of antibodies (MYB, beta-catenin, CD117, SOX10, ki67, P63, calponin) and fluorescence in situ hybridization (FISH)-MYB were utilized to distinguish above salivary basaloid diseases from AdCC. Results: Histologically, the striking diagnostic features of cBCA, iBCA, SB, and IDH are composed of basaloid tumor cells, well-defined encapsulation, or lack of destructive invasion. Immunohistochemically, Myb immune-labeling could effectively make a distinction among cBCA, iBCA, SB, and IDH from AdCC, except in SB. cBCA and iBCA typically expressed beta-catenin in the nuclei of tumor cells. There was no statistical significance in the ki67 index between SB and AdCC, but their indices were significantly higher than those of iBCA and IDH (p < 0.05, p < 0.05, respectively). P63 and calponin immune-expression were observed in the basaloid or myoepithelial cells. CD117 were observed positively in cBCA, iBCA, SB, and AdCC, except in IDH. SOX10 were observed positively in all cases. No cases had fusion of MYB and NFIB detectable by FISH, except in AdCC. Conclusion: Considering their sensitivity and specificity, FISH-Myb and an immunohistochemical panel of MYB/beta-catenin/ki67 would be an optimal choice for the differential diagnosis of these basaloid lesions. Clinical relevance: Some salivary basaloid tumor or tumor-like lesions have overlapping features with AdCC. Through this present research, we suggested that the panel IHC of MYB, betacatenin, and ki67 combined with FISH-Myb should be an optimal choice for differential diagnosis among those lesions. CI - Copyright (c) 2020 Li, Jie and He. FAU - Li, Binbin AU - Li B AD - Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China. AD - Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences, Beijing, China. AD - National Clinical Research Center for Oral Diseases, Peking University School and Hospital of Stomatology, Beijing, China. FAU - Jie, Weiping AU - Jie W AD - Department of Oral Pathology, Peking University School and Hospital of Stomatology, Beijing, China. AD - Research Unit of Precision Pathologic Diagnosis in Tumors of the Oral and Maxillofacial Regions, Chinese Academy of Medical Sciences, Beijing, China. AD - National Clinical Research Center for Oral Diseases, Peking University School and Hospital of Stomatology, Beijing, China. FAU - He, Huiying AU - He H AD - Department of Pathology, School of Basic Medical Sciences, Third Hospital, Peking University Health Science Center, Beijing, China. LA - eng PT - Journal Article DEP - 20200630 PL - Switzerland TA - Front Oncol JT - Frontiers in oncology JID - 101568867 PMC - PMC7339910 OTO - NOTNLM OT - MYB OT - adenoid cystic carcinoma OT - fluorescence in situ hybridization OT - immunohistochemistry OT - salivary basaloid lesions EDAT- 2020/07/23 06:00 MHDA- 2020/07/23 06:01 PMCR- 2020/01/01 CRDT- 2020/07/23 06:00 PHST- 2019/09/15 00:00 [received] PHST- 2020/05/04 00:00 [accepted] PHST- 2020/07/23 06:00 [entrez] PHST- 2020/07/23 06:00 [pubmed] PHST- 2020/07/23 06:01 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fonc.2020.00870 [doi] PST - epublish SO - Front Oncol. 2020 Jun 30;10:870. doi: 10.3389/fonc.2020.00870. eCollection 2020.