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![POEMS syndrome associated with Castleman disease: a case report and literature review](https://image.oaes.cc/eeba7d34-b09d-46b3-948e-2596fa227ac4/73.fig.2.png)
Figure 2. Right cervical lymph node biopsy showing hyaline vascular Castleman disease, follicular, lymphocytes, vascularity hyperplasia, and the formation of concentric of lymphocytes surrounding the germinal center. H and E staining (original magnification, ×200)