Fig. 3

Histology of the surgical specimen. a Image of the surgical specimen. Numerous acini (b), few ducts (d) and islet cells (h) were found in the submucosa, muscularis propria and serosa. Cysts were lined by a single layer of short columnar or cubic serous epithelia (g). c Is a higher magnification image of b; e, f are higher magnification images of d; h, i are higher magnification images of g. b, d Represent slide 9 in a, and g is slide 5 in a. Blue arrows indicate EP tissues, and yellow arrows indicate higher magnification lesions. Scale bars represent 200 μm (a, b, d, g), 100 μm (c, e, f), and 50 μm (h, i)