PMID- 29269666 OWN - NLM STAT- MEDLINE DCOM- 20180827 LR - 20181202 IS - 1349-7235 (Electronic) IS - 0918-2918 (Print) IS - 0918-2918 (Linking) VI - 57 IP - 8 DP - 2018 Apr 15 TI - The Diagnosis of Gastric Mucosa-associated Lymphoid Tissue Lymphoma by Flow Cytometry and Fluorescence in situ Hybridization of Biopsy Specimens. PG - 1081-1086 LID - 10.2169/internalmedicine.9617-17 [doi] AB - Mucosa-associated lymphoid tissue (MALT) lymphoma and reactive inflammatory lymphoid changes are frequently difficult to distinguish based on a routine histological differential diagnosis. We were unable to diagnose gastric MALT lymphoma histologically using specimens obtained by endoscopy, although a flow cytometry (FCM) analysis demonstrated clonality of neoplastic cells by separating cells by CD45 gating. Furthermore, a fluorescence in situ hybridization (FISH) analysis showed trisomy 18. We therefore diagnosed gastric MALT lymphoma with trisomy 18. We recommend that FCM and FISH analyses of biopsy specimens be considered for diagnosing gastric MALT lymphoma if this diagnosis is suspected based on endoscopic findings. FAU - Matsueda, Katsunori AU - Matsueda K AD - Department of Gastroenterology, National Hospital Organization Fukuyama Medical Center, Japan. FAU - Omote, Sizuma AU - Omote S AD - Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan. FAU - Sakata, Masahiro AU - Sakata M AD - Department of Gastroenterology, National Hospital Organization Fukuyama Medical Center, Japan. FAU - Fujita, Isao AU - Fujita I AD - Department of Gastroenterology, National Hospital Organization Fukuyama Medical Center, Japan. FAU - Horii, Jouichiro AU - Horii J AD - Department of Gastroenterology, National Hospital Organization Fukuyama Medical Center, Japan. FAU - Toyokawa, Tatsuya AU - Toyokawa T AD - Department of Gastroenterology, National Hospital Organization Fukuyama Medical Center, Japan. LA - eng PT - Case Reports PT - Journal Article DEP - 20171221 PL - Japan TA - Intern Med JT - Internal medicine (Tokyo, Japan) JID - 9204241 SB - IM MH - Aged MH - Biopsy MH - Diagnosis, Differential MH - Endoscopy MH - Flow Cytometry MH - Humans MH - In Situ Hybridization, Fluorescence MH - Lymphoma, B-Cell, Marginal Zone/*diagnosis/diagnostic imaging/pathology MH - Male PMC - PMC5938496 OTO - NOTNLM OT - flow cytometry OT - fluorescence in situ hybridization OT - mucosa-associated lymphoid tissue lymphoma OT - reactive inflammatory lymphoid changes OT - trisomy 18 EDAT- 2017/12/23 06:00 MHDA- 2018/08/28 06:00 PMCR- 2018/04/15 CRDT- 2017/12/23 06:00 PHST- 2017/12/23 06:00 [pubmed] PHST- 2018/08/28 06:00 [medline] PHST- 2017/12/23 06:00 [entrez] PHST- 2018/04/15 00:00 [pmc-release] AID - 10.2169/internalmedicine.9617-17 [doi] PST - ppublish SO - Intern Med. 2018 Apr 15;57(8):1081-1086. doi: 10.2169/internalmedicine.9617-17. Epub 2017 Dec 21.