PMID- 23959583 OWN - NLM STAT- MEDLINE DCOM- 20140718 LR - 20211021 IS - 1865-3774 (Electronic) IS - 0925-5710 (Linking) VI - 98 IP - 4 DP - 2013 Oct TI - Diagnostic challenges in a case of B cell lymphoma unclassifiable with features intermediate between diffuse large B-cell lymphoma and Burkitt lymphoma. PG - 478-82 AB - Unclassifiable B-cell lymphoma with features intermediate between diffuse large B-cell lymphoma (DLBCL) and Burkitt lymphoma (BL) is a recently recognized category of mature B-cell lymphoma. This represents a heterogeneous group of diseases which often pose diagnostic problems in clinical practice, yet its distinction from DLBCL to BL is important for its therapeutic and prognostic implications. We report the challenging diagnostic process of a 60-year-old man. He had a CD10 and BCL2-positive, BCL6-negative B-cell malignancy with loss of multiple B-cell markers including surface immunoglobulin. The karyotype was complex and unusual, including t(2;18)(p12;q21), t(8;14)(q24;q32) and a derivative chromosome 22 mimicking a Philadelphia chromosome that led to initial diagnostic confusion. A triple-hit gray zone B-cell lymphoma with rearrangements of MYC, BCL2, BCL6, both alleles of IGH and likely IGK and IGL was finally diagnosed upon additional fluorescence in situ hybridization (FISH) studies. His disease was nonresponsive to intensive combination chemotherapy and he died 4 months after presentation. This case illustrates the diagnostic difficulty encountered in such group of B-cell lymphomas and emphasizes the need to integrate morphological, immunophenotypic and genetic data in making a diagnosis. FAU - So, Chi-Chiu AU - So CC FAU - Yung, Ka-Hung AU - Yung KH FAU - Chu, Man-Leng AU - Chu ML FAU - Wan, Thomas S K AU - Wan TS LA - eng PT - Case Reports PT - Journal Article PL - Japan TA - Int J Hematol JT - International journal of hematology JID - 9111627 SB - IM MH - Bone Marrow/pathology MH - Burkitt Lymphoma/*diagnosis/drug therapy/genetics/pathology MH - Diagnosis, Differential MH - Fatal Outcome MH - Humans MH - Immunophenotyping MH - In Situ Hybridization, Fluorescence MH - Karyotype MH - Lymphoma, Large B-Cell, Diffuse/*diagnosis/drug therapy/genetics/pathology MH - Male MH - Middle Aged MH - Phenotype EDAT- 2013/08/21 06:00 MHDA- 2014/07/19 06:00 CRDT- 2013/08/21 06:00 PHST- 2013/05/13 00:00 [received] PHST- 2013/08/06 00:00 [accepted] PHST- 2013/08/05 00:00 [revised] PHST- 2013/08/21 06:00 [entrez] PHST- 2013/08/21 06:00 [pubmed] PHST- 2014/07/19 06:00 [medline] AID - 10.1007/s12185-013-1414-9 [doi] PST - ppublish SO - Int J Hematol. 2013 Oct;98(4):478-82. doi: 10.1007/s12185-013-1414-9.