Gastroenterology Research, ISSN 1918-2805 print, 1918-2813 online, Open Access
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Case Report

Volume 13, Number 2, April 2020, pages 85-87

First Reported Case of Extramedullary Plasmacytoma of the Appendix


Figure 1.
Figure 1. Abdominal CT imaging demonstrated a 3.7-cm mass at the appendiceal tip (arrow). CT: computed tomography.
Figure 2.
Figure 2. (a) The appendiceal wall was infiltrated by a plasma cell neoplasm (hematoxylin and eosin staining, × 400, plasma cells indicated by blue arrow). (b) The cells were positive for cluster of differentiation 138 (CD138) (anti-CD138 immunohistochemistry, × 400, positive cells indicated by green arrow). (c) The cells also demonstrated prominent kappa light chain restriction (kappa in situ hybridization, × 400, positive cells indicated by yellow arrow).