Fig. 3.
Histologic and immunohistochemical pictures of the gastric tumor. A high power view (H&E, ×400) shows a diffuse and solid proliferation of large atypical cells with pleomorphic nuclei. Multiple nuclear lobulations are noted (A). Positive immunoreactivity with anti-CD30 (×400) and (B), negative immunoreactivity for ALK (×400) (C).
