PMID- 29147589 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200929 IS - 2090-6560 (Print) IS - 2090-6579 (Electronic) IS - 2090-6579 (Linking) VI - 2017 DP - 2017 TI - gammadelta T-Cell Acute Lymphoblastic Leukemia/Lymphoma: Discussion of Two Pediatric Cases and Its Distinction from Other Mature gammadelta T-Cell Malignancies. PG - 5873015 LID - 10.1155/2017/5873015 [doi] LID - 5873015 AB - Gamma delta (gammadelta) T-cell antigen receptor (TCR) expression and its related T-cell differentiation are not commonly reported in T-cell acute lymphoblastic leukemia/lymphoma (T-ALL). Here we report two pediatric T-ALL cases and present their clinical features, histology, immunophenotypes, cytogenetics, and molecular diagnostic findings. The first patient is a two-year-old girl with leukocytosis, circulating lymphoblasts, and a cryptic insertion of a short-arm segment at 10p12 into the long-arm segment of 11q23 resulting in an MLL and AF10 fusion transcript, which may be the first reported in gammadelta T-ALL. She responded to the chemotherapy protocol poorly and had persistent diseases. Following an allogeneic bone marrow transplant, she went into remission. The second patient is an eleven-year-old boy with a normal white cell count, circulating blasts, and a normal karyotype, but without any immature cellular markers by flow cytometric analysis. He responded to the chemotherapy well and achieved a complete remission. These cases demonstrate the diverse phenotypic, cytogenetic, and molecular aspects of gammadelta T-ALL. Early T-precursor- (ETP-) ALL and their differential diagnosis from other mature gammadelta T-cell leukemia/lymphomas are also discussed. FAU - Wei, Eric X AU - Wei EX AUID- ORCID: 0000-0002-5824-867X AD - Department of Pathology and Translational Pathobiology, LSU Health Shreveport, Shreveport, LA, USA. FAU - Leventaki, Vasiliki AU - Leventaki V AD - Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA. FAU - Choi, John K AU - Choi JK AD - Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA. FAU - Raimondi, Susana C AU - Raimondi SC AD - Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA. FAU - Azzato, Elizabeth M AU - Azzato EM AD - Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA. FAU - Shurtleff, Sheila A AU - Shurtleff SA AD - Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN, USA. FAU - Ong, Menchu G AU - Ong MG AD - Department of Pathology and Translational Pathobiology, LSU Health Shreveport, Shreveport, LA, USA. FAU - Veillon, Diana M AU - Veillon DM AD - Department of Pathology and Translational Pathobiology, LSU Health Shreveport, Shreveport, LA, USA. FAU - Cotelingam, James D AU - Cotelingam JD AD - Department of Pathology and Translational Pathobiology, LSU Health Shreveport, Shreveport, LA, USA. FAU - Shackelford, Rodney E AU - Shackelford RE AD - Department of Pathology and Translational Pathobiology, LSU Health Shreveport, Shreveport, LA, USA. LA - eng PT - Case Reports DEP - 20170924 PL - United States TA - Case Rep Hematol JT - Case reports in hematology JID - 101576456 PMC - PMC5632927 EDAT- 2017/11/18 06:00 MHDA- 2017/11/18 06:01 PMCR- 2017/09/24 CRDT- 2017/11/18 06:00 PHST- 2017/06/09 00:00 [received] PHST- 2017/07/31 00:00 [revised] PHST- 2017/08/14 00:00 [accepted] PHST- 2017/11/18 06:00 [entrez] PHST- 2017/11/18 06:00 [pubmed] PHST- 2017/11/18 06:01 [medline] PHST- 2017/09/24 00:00 [pmc-release] AID - 10.1155/2017/5873015 [doi] PST - ppublish SO - Case Rep Hematol. 2017;2017:5873015. doi: 10.1155/2017/5873015. Epub 2017 Sep 24.