Spindle-Cell Variants of Primary Cutaneous Follicle Center B-Cell Lymphomas Are Germinal Center B-Cell Lymphomas by Gene Expression Profiling Using a Formalin- Fixed Paraffin-Embedded Specimen  Ilske Oschlies, Christian W. Kohler, Monika Szczepanowski, Karoline Koch, Artur Gontarewicz, Dieter Metze, Uwe Hillen, Julia Richter, Rainer Spang, Wolfram Klapper  Journal of Investigative Dermatology  Volume 137, Issue 11, Pages 2450-2453 (November 2017) DOI: 10.1016/j.jid.2017.06.016 Copyright © 2017 The Authors Terms and Conditions

Figure 1 Histopathology of spindle-cell variant of primary cutaneous follicle center B-cell lymphoma. This is one representative example (case 9, Table 1) showing a deep cutaneous infiltration by large spindle cells (a and b, hematoxilin and eosin). (c) Expression of CD20, (d) high Ki67 index, (e) expression of BCL6, and (f) lack of MUM1 expression. Scale bars = 1.5 mm (a and c), 0.07 mm (b), 0.15 mm (d–f). Journal of Investigative Dermatology 2017 137, 2450-2453DOI: (10.1016/j.jid.2017.06.016) Copyright © 2017 The Authors Terms and Conditions