Lymphomatoidgastropathy mimicking extranodal NK/T cell lymphoma, nasal type: A case report

Figure 1 Gastroendoscopy revealed an erythematous dish-like elevated lesion in the greater curvature of the lower body at check-up (A and B), and at one (C) and six months later (D); Twelve months later, endoscopy revealed a similar lesion in the anterior wall of the middlebody (E and F), and an erythematous lesion in the fornix (G and H).

Figure 2 Histological examination showed massive atypical medium- to large-sized natural killer lymphocyte infiltrations with slightly irregular nuclear contours. A dispersed chromatin pattern and clear cytoplasm in the gastric mucosa, × 100 (A) and × 400 (B); Immunohistochemical stains showed CD3⁺ (C), CD4^- (D), CD5^- (E), CD7⁺ (F), CD8^- (G), CD20^- (H), CD56⁺ (I), T-cell restricted intracellular antigen-1⁺ (J), granzyme B⁺ (K) and Epstein-Barr virus-encoded RNA in-situ hybridization (L).