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WHO classification of tumours of haematopoietic and lymphoid tissues. Lyon, IARC. 2017."},{"key":"2","doi-asserted-by":"crossref","unstructured":"2 Fischer T, Zing NPC, Chiattone CS, Federico M, Luminari S. Transformed follicular lymphoma. Ann Hematol. 2018; 97: 17-29.","DOI":"10.1007\/s00277-017-3151-2"},{"key":"3","doi-asserted-by":"crossref","unstructured":"3 Davies AJ, Rosenwald A, Wright G et al.<\/i> Transformation of follicular lymphoma to diffuse large B-cell lymphoma proceeds by distinct oncogenic mechanisms. Br J Haematol. 2007; 136: 286-293.","DOI":"10.1111\/j.1365-2141.2006.06439.x"},{"key":"4","doi-asserted-by":"crossref","unstructured":"4 Al-Tourah AJ, Gill KK, Chhanabhai M et al.<\/i> Population-based analysis of incidence and outcome of transformed non-Hodgkin\u2019s lymphoma. J Clin Oncol. 2008; 26: 5165-5169.","DOI":"10.1200\/JCO.2008.16.0283"},{"key":"5","doi-asserted-by":"crossref","unstructured":"5 Maeshima AM, Omatsu M, Nomoto J et al.<\/i> Diffuse large B-cell lymphoma after transformation from low-grade follicular lymphoma: morphological, immunohistochemical, and FISH analyses. Cancer Sci. 2008; 99: 1760-1768.","DOI":"10.1111\/j.1349-7006.2008.00873.x"},{"key":"6","doi-asserted-by":"crossref","unstructured":"6 Sham RL, Phatak P, Carignan J, Janas J, Olson JP. Progression of follicular large cell lymphoma to Burkitt\u2019s lymphoma. Cancer. 1989; 63: 700-702.","DOI":"10.1002\/1097-0142(19890215)63:4<700::AID-CNCR2820630417>3.0.CO;2-S"},{"key":"7","doi-asserted-by":"crossref","unstructured":"7 Yano T, Jaffe ES, Longo DL, Raffeld M. MYC rearrangements in histologically progressed follicular lymphomas. Blood. 1992; 80: 758-767.","DOI":"10.1182\/blood.V80.3.758.758"},{"key":"8","doi-asserted-by":"crossref","unstructured":"8 Mukhopadhyay S, Readling J, Cotter PD, Shrimpton AE, Sidhu JS. Transformation of follicular lymphoma to Burkitt-like lymphoma within a single lymph node. Hum Pathol. 2005; 36: 571-575.","DOI":"10.1016\/j.humpath.2005.01.004"},{"key":"9","unstructured":"9 Xu X, Zhang L, Wang Y et al.<\/i> Double-hit and triple-hit lymphomas arising from follicular lymphoma following acquisition of MYC: report of two cases and literature review. Int J Clin Exp Pathol. 2013; 6: 788-794."},{"key":"10","doi-asserted-by":"crossref","unstructured":"10 Martinez-Mera C, Herrero-Moyano M, L\u00f3pez-Elzaurdia C, Loscertales J, Arag\u00fces M. Cutaneous involvement in a high-grade B-cell lymphoma with rearrangement of MYC, BCL2, and BCL6 transformed from follicular lymphoma. Am J Dermatopathol. 2019; 41: 80-82.","DOI":"10.1097\/DAD.0000000000001076"},{"key":"11","unstructured":"11 Jaffe ES, Zarate-Osorno A, Medeiros LJ. The interrelationship of Hodgkin\u2019s disease and non-Hodgkin\u2019s lymphomas--lessons learned from composite and sequential malignancies. Semin Diagn Pathol. 1992; 9: 297-303."},{"key":"12","doi-asserted-by":"crossref","unstructured":"12 LeBrun DP, Ngan BY, Weiss LM et al.<\/i> The bcl-2 oncogene in Hodgkin\u2019s disease arising in the setting of follicular non-Hodgkin\u2019s lymphoma. Blood. 1994; 83: 223-230.","DOI":"10.1182\/blood.V83.1.223.bloodjournal831223"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13 Br\u00e4uninger A, Hansmann ML, Strickler JG et al.<\/i> Identification of common germinal-center B-cell precursors in two patients with both Hodgkin\u2019s disease and non-Hodgkin\u2019s lymphoma. N Engl J Med. 1999; 340: 1239-1247.","DOI":"10.1056\/NEJM199904223401604"},{"key":"14","doi-asserted-by":"crossref","unstructured":"14 Marafioti T, Hummel M, Anagnostopoulos I et al.<\/i> Classical Hodgkin\u2019s disease and follicular lymphoma originating from the same germinal center B cell. J Clin Oncol. 1999; 17: 3804-3809.","DOI":"10.1200\/JCO.1999.17.12.3804"},{"key":"15","doi-asserted-by":"crossref","unstructured":"15 Maeshima AM, Taniguchi H, Nomoto J et al.<\/i> Clinicopathological features of classical Hodgkin lymphoma in patients \u226540 years old, with special reference to composite cases. Jpn J Clin Oncol. 2015; 45: 921-928.","DOI":"10.1093\/jjco\/hyv101"},{"key":"16","doi-asserted-by":"crossref","unstructured":"16 de Jong D, Voetdijk BMH, Beverstock GC et al.<\/i> Activation of the c-myc oncogene in a precursor-B-cell blast crisis of follicular lymphoma, presenting as composite lymphoma. 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Follicular lymphoma suggested to transform into EBV-negative plasmablastic lymphoma. Int J Hematol. 2019; 109: 723-730.","DOI":"10.1007\/s12185-019-02591-4"},{"key":"24","doi-asserted-by":"crossref","unstructured":"24 Maeshima AM, Taniguchi H, Ida H et al.<\/i> Non-diffuse large B-cell lymphoma transformation from follicular lymphoma: a single-institution study of 19 cases. Hum Pathol. 2020; 102: 33-43.","DOI":"10.1016\/j.humpath.2020.06.001"},{"key":"25","doi-asserted-by":"crossref","unstructured":"25 Alsabeh R, Medeiros LJ, Glackin C, Weiss LM. Transformation of follicular lymphoma into CD30-large cell lymphoma with anaplastic cytologic features. Am J Surg Pathol. 1997; 21: 528-536.","DOI":"10.1097\/00000478-199705000-00004"},{"key":"26","doi-asserted-by":"crossref","unstructured":"26 Maeshima AM, Taniguchi H, Nomoto J et al.<\/i> Histological and immunophenotypic changes in 59 cases of B-cell non-Hodgkin\u2019s lymphoma after rituximab therapy. 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Histopathology. 2005; 46: 241-255.","DOI":"10.1111\/j.1365-2559.2005.02068.x"},{"key":"33","doi-asserted-by":"crossref","unstructured":"33 Maeshima AM, Taniguchi H, Toyoda K et al.<\/i> Clinicopathological features of histological transformation from extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue to diffuse large B-cell lymphoma: an analysis of 467 patients. Br J Haematol. 2016; 174: 923-931.","DOI":"10.1111\/bjh.14153"},{"key":"34","doi-asserted-by":"crossref","unstructured":"34 Maeshima AM, Taniguchi H, Hori Y et al.<\/i> Diagnostic utility and prognostic significance of the Ki\u201067 labeling index in diffuse large B\u2010cell lymphoma transformed from follicular lymphoma: a study of 76 patients. Pathol Int. 2021; 71: 674-681.","DOI":"10.1111\/pin.13148"},{"key":"35","doi-asserted-by":"crossref","unstructured":"35 Broyde A, Boycov O, Strenov Y et al.<\/i> Role and prognostic significance of the Ki-67 index in non-Hodgkin\u2019s lymphoma. 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