PMID- 30480372 OWN - NLM STAT- MEDLINE DCOM- 20190403 LR - 20190403 IS - 1751-553X (Electronic) IS - 1751-5521 (Linking) VI - 41 IP - 2 DP - 2019 Apr TI - Flow cytometry identification of nonhemopoietic neoplasms during routine immunophenotyping. PG - 208-217 LID - 10.1111/ijlh.12946 [doi] AB - INTRODUCTION: Nonhemopoietic neoplasms (NHNs) may be encountered during routine flow cytometry (FC) immunophenotyping. The clue of their presence mainly relies on detection of CD45-negative (CD45-) cells with altered scatter parameters. METHODS: In this study, we evaluated a monoclonal antibody combination conceived to characterize the CD45- population by FC, suspected of belonging to NHNs, when present. The panel included CD45 for leucocytes identification, CD326 (clones BerEP4 and HEA-125) to mark epithelial cells, CD33 to identify myeloid cells, CD138 to trace plasma cells and CD56 useful in the identification of neuroendocrine tumours. 7AAD vital dye was used to gate out dead cells. Results were correlated with cytomorphology and confirmed by histological data, if available. RESULTS: Among 9422 specimens submitted for routine FC investigation, 47 samples that included fine-needle aspirates, bone marrow aspirates, tissue biopsies and body fluids had a detectable CD45- population and a sufficient cell amount to be further investigated. FC revealed the presence of CD326-positive epithelial cells in 38 specimens; altered scatter parameters and variable reactivity to the other antigens tested allowed to suspect NHNs in the remaining nine samples. The presence of NHNs was confirmed in all cases by morphology. CONCLUSIONS: The current results show that when CD45- cells with altered scatter parameters were detected, cytometrists involved in leukaemia/lymphoma diagnosis may require further FC investigations to rapidly identify NHNs in different specimens, thus reducing the time of the immunohistochemical diagnostic workup to reach a final diagnosis. CI - (c) 2018 John Wiley & Sons Ltd. FAU - Stacchini, Alessandra AU - Stacchini A AUID- ORCID: 0000-0002-9605-7209 AD - Flow Cytometry Unit, Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. FAU - Aliberti, Sabrina AU - Aliberti S AD - Flow Cytometry Unit, Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. FAU - Demurtas, Anna AU - Demurtas A AD - Flow Cytometry Unit, Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. FAU - Maletta, Francesca AU - Maletta F AD - Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. FAU - Molinaro, Luca AU - Molinaro L AD - Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. FAU - Godio, Laura AU - Godio L AD - Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. FAU - Papotti, Mauro AU - Papotti M AD - Pathology Division, Citta' della Salute e della Scienza Hospital, Turin, Italy. AD - University of Turin, Turin, Italy. LA - eng PT - Journal Article DEP - 20181127 PL - England TA - Int J Lab Hematol JT - International journal of laboratory hematology JID - 101300213 RN - 0 (Antigens, CD) RN - 0 (Neoplasm Proteins) SB - IM MH - Antigens, CD/*blood MH - Female MH - *Flow Cytometry MH - Humans MH - *Immunophenotyping MH - Male MH - Neoplasm Proteins/*blood MH - Neoplasms/*blood/*diagnosis MH - Retrospective Studies OTO - NOTNLM OT - CD138 OT - CD326 OT - CD56 OT - carcinoma OT - epithelial cells OT - multicolour flow cytometry EDAT- 2018/11/28 06:00 MHDA- 2019/04/04 06:00 CRDT- 2018/11/28 06:00 PHST- 2018/07/17 00:00 [received] PHST- 2018/10/08 00:00 [revised] PHST- 2018/10/16 00:00 [accepted] PHST- 2018/11/28 06:00 [pubmed] PHST- 2019/04/04 06:00 [medline] PHST- 2018/11/28 06:00 [entrez] AID - 10.1111/ijlh.12946 [doi] PST - ppublish SO - Int J Lab Hematol. 2019 Apr;41(2):208-217. doi: 10.1111/ijlh.12946. Epub 2018 Nov 27.