The Korean Journal of Gastroenterology :eISSN 2233-6869 / pISSN 1598-9992


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Fig. 2. Histopathological findings. (A) Atypical lymphocytes infiltrate the deep mucosa and submucosa (H&E stain, x100). (B) Small lymphocytes characterized by central nuclei, irregular nuclear membranes, and abundant clear cytoplasm invade the epithelium of the esophagus (H&E stain, x400). (C–E) Tumor cells are positive for CD20 (C) but negative for CD5 (D) and CD10 (E) (immunohistochemical stain, x100). (F) Ki-67 index is approximately 20% (Ki-67 stain, x100).
Korean J Gastroenterol 2024;83:157~162
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