Abdominal Key

Figure 3.1 Normal small bowel, endoscopic findings in the normal duodenum. A fine carpet of villi lines the duodenal lumen. The circular folds (plicae) of the small bowel have smooth borders….

Figure 2.1 Anatomic compartments of the stomach. Although the stomach can be compartmentalized based on anatomic landmarks, the histologic compartmentalization of the stomach is based on physiologic function. The gastric fundus…

Figure 4.1 Normal colon. This resection specimen illustrates the four main layers of the colon: mucosa, submucosa, muscularis propria, and serosa. The mucosa consists of epithelium (E), lamina propria (L), and…

Figure 1.1 Unremarkable endoscopic appearance of the esophagus. The pink-tinged mucosal surface appears relatively smooth and homogenous throughout the esophagus. There are no visible plaques, nodules, masses, ulcers, erythema, blood, varices,…

e-Figure 3.1 This biopsy was taken from the duodenum. The structure pictured is: A. A small neuroma, a diagnosis that can be confirmed with a positive S100 protein immunostain. B….

e-Figure 1.1 Which of the following is the best diagnosis for this esophageal biopsy submitted as “rule-out eosinophilic esophagitis”? A. Amyloidosis underlying squamous mucosa B. Squamous mucosa with mild graft…

e-Figure 4.1 This colonic biopsy was taken from a 15-year-old female with abdominal pain and diarrhea. What stain would you perform to further evaluate this biopsy? A. Acetylcholinesterase for the…

e-Figure 2.1 Which of the following is the best diagnosis for this stomach biopsy submitted as “rule-out carcinoma?” A. Schistosomiasis B. 90Yttrium-labeled microspheres C. Somatostatinoma with psammoma bodies D. Dystrophic…