CD30 expression in neoplastic T cells of follicular T cell lymphoma is a helpful diagnostic tool in the differential diagnosis of Hodgkin lymphoma

Sylvia Hartmann, Olga Goncharova, Anna Portyanko, Elena Sabattini, Jörn Meinel, Ralf Küppers, Claudio Agostinelli, Stefano Aldo Pileri, Martin Leo Hansmann

Research output: Contribution to journalArticle

Abstract

Follicular T cell lymphoma is derived from follicular T-helper cells. In many cases, neoplastic T cells form rosettes around Hodgkin–Reed–Sternberg-like cells, which can lead to the misdiagnosis of classical Hodgkin lymphoma. The aim of the present study was to obtain a better understanding of this rosetting phenomenon and to recognize features that are helpful in the differential diagnosis of classical Hodgkin lymphoma. Sixteen mostly elderly follicular T cell lymphoma patients (mean 66 years) were analyzed. Fifteen of the 16 follicular T cell lymphoma cases presented with Hodgkin–Reed–Sternberg-like cells, which were CD20-positive in 27% of the cases and Epstein–Barr virus-infected in nearly all cases. Frequently, the immunophenotype of rosetting neoplastic T cells differed from the bulk neoplastic cells with less numerous T-follicular helper cell markers expressed, suggesting a modulation of T-follicular helper cell marker expression in the neoplastic T cells. In 75% of the cases, variable CD30 expression was encountered in the neoplastic T cells, likely reflecting an activation state in these cells. Hodgkin–Reed–Sternberg-like cells were positive for CCL17, and follicular T cell lymphoma tumor cells expressed its receptor CCR4 at variable intensity, thus potentially explaining the phenomenon of the tumor cells’ rosetting around Hodgkin–Reed–Sternberg-like cells. In summary, this study confirms the presence of Hodgkin–Reed–Sternberg-like cells in a high number of cases of follicular T cell lymphoma, suggesting that Hodgkin–Reed–Sternberg-like cells may contribute to the development of this lymphoma. Hodgkin–Reed–Sternberg-like cells in follicular T cell lymphoma cannot reliably be differentiated from the Hodgkin–Reed–Sternberg cells of classical Hodgkin lymphoma based on their immunophenotype. In contrast, demonstration of a T-follicular helper cell phenotype with CD10 and frequent CD30 expression in the neoplastic T cell population can help to establish the diagnosis of follicular T cell lymphoma, and may even indicate CD30 as a therapeutic target for these patients.

Original languageEnglish
Pages (from-to)37-47
Number of pages11
JournalModern Pathology
Volume32
Issue number1
DOIs
Publication statusPublished - Jan 1 2019

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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    Hartmann, S., Goncharova, O., Portyanko, A., Sabattini, E., Meinel, J., Küppers, R., Agostinelli, C., Pileri, S. A., & Hansmann, M. L. (2019). CD30 expression in neoplastic T cells of follicular T cell lymphoma is a helpful diagnostic tool in the differential diagnosis of Hodgkin lymphoma. Modern Pathology, 32(1), 37-47. https://doi.org/10.1038/s41379-018-0108-5