Fig. 2

Gross and histomorphological findings of Patient 2. Gross examination revealed a large ulcerated mass in the cardia and fundus (Fig. 2A), with necrotic and diffuse hyperplasia of tumor cells at low magnification (Fig. 2B, 100x). The tumor cells had poor adhesion, and lymphocyte aggregation was observed in the stroma, which mimicked the structure of lymphoma (Fig. 2C, 200x). Red nucleoli were observed in some tumor cells (Fig. 2D, 400x), and 2 to 3 adherent nucleoli were similar to centroblast in some cells