PMC5686217_01
Free air and ascites around the liver (A). Free air and ascites in the pelvic cavity (B). A radiopaque linear shadow about 35 mm in diameter (arrow) was observed in the small intestine, and the stricture was exposed to the abdominal cavity in the pelvic cavity (C). Ingested foreign body (arrow) on CT with 3D reconstruction (D).
gr1.jpg
PMC5686217_01_gr1.jpg
fig0005
Abdominal computed tomography (CT) demonstrated free air and ascites in the abdominal cavity (Fig. 1A, B). In the pelvic cavity, a radiopaque linear shadow about 35 mm in diameter was shown in the small intestine, and that stricture was exposed to the abdominal cavity (Fig. 1C, D).
Perforation of the small intestine due to the fish bone (A). The foreign body (fish bone), 35 mm in diameter (B). The anal side of the perforation site, showing circulated thickness of the wall (C).
gr2.jpg
PMC5686217_01_gr2.jpg
fig0010
The resected specimen showed perforation of the small intestine due to a fish bone 35 mm in length (Fig. 2A, B). The anal side of the perforation site showed circulated thickness of the wall (Fig. 2C).
Hematoxylin and eosin staining showing diffuse spreading of lymphocytes in the mucosa and submucosa and in the follicular gland (A, B). An immunohistochemical study showing positivity for CD20 (C), CD10 (D) and bcl-2 (E).
gr3.jpg
PMC5686217_01_gr3.jpg
fig0015
A pathological examination revealed diffuse spreading of medium-sized lymphocytes in the mucosa and submucosa, and a follicular structure was seen (Fig. 3A, B). An immunohistochemical study showed CD20, CD79a, CD10 and bcl-2 positivity (Fig. 3C, D, E).