PMC6005285_01
Short axis ultrasonographic image of the stomach demonstrating the typical target-like (multilayering) appearance seen in cases of intussusception.
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fig1
Caudally, from this region of dilation, an additional cylindrical segment surrounded those described previously, resulting in a concentric ring appearance (Figure 1).
(a) Gastroduodenal intussusception. The duodenum (D) and air sac (AS) are readily visible at the surgical site. The cranial (Cr) and caudal (Cd) directions of the snake are identified. (b) Esophagogastric intussusception. After the gastrotomy, adhesions (A) are identified between the esophagus (E) and the stomach's serosa (Se). The hypertrophied gastric mucosa (M) is visible. (c) Reduction of the double compounded intussusception. Depicted here are the esophagus (E), stomach (S), and duodenum (D) in their normal anatomic position.
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fig2
The esophagus was observed to be intussuscepted into the stomach (Figure 2(b)), and then this combination was further invaginated into the duodenum (Figure 2(a)) forming a second intussusception. There were adhesions formed between the esophagus and stomach that were bluntly dissected in order to extract the esophagus from the stomach (Figure 2(c)).
(a) Low power magnification image of chronically inflamed stomach with hyperplasia of surface and glandular epithelium. H&E stain; bar = 142 mum. (b) High power magnification image of hyperplastic gastric glandular and surface epithelium with protozoa (arrows) closely associated with the apical surface membranes of the epithelial cells. Other protozoa are free in the lumen. H&E, bar = 14 mum.
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fig3
In histologic sections of the stomach, epithelium on the gastric surface and in gastric glands was hyperplastic (Figure 3(a)). Myriad protozoa that were 2 mum in diameter, eosinophilic to basophilic, and periodic-acid-Schiff- (PAS-) positive and that had variably distinct 0.5-2 mum basophilic nuclei were closely associated with the apical epithelial surfaces as well as being free within the lumen (Figure 3(b)).