Endoscopic ultrasound evaluation in the surgical treatment of duodenal and peri-ampullary adenomas

Table 1 Summary of clinical data of patients with benign duodenal and peri-ampullary adenomas who underwent endoscopic ultrasound pre-operatively

Age, yr, mean ± SD (range)	63.4 ± 12.63 (25-90)
Sex	45% male; 55% female
Types of resection	Endoscopic (22); pancreaticoduodenectomy (6); transduodenal (10); partial duodenectomy (9)
Tumor location	Periampullary (29); duodenal (18)
Post operative final path	Villous adenoma (5); tubulovillous adenoma (10); tubular adenoma (20); hyperplastic polyp (2); chronic inflammation (1); adenoma (8); Reactive epithelial changes of normal small bowel mucosa (1)
EUS prediction	Absence of muscularis invasion (n = 5, P < 0.05); underestimated submucosal invasion (n = 4, P < 0.05); Accurately predicted depth of tumor invasion (n = 38, P < 0.05)

EUS: Endoscopic ultrasound.

Table 2 2×2 Contingency table

	Absence of muscularis involvement path
	Yes1	No
Muscularis involvement EUS
No	36	4
Yes1	5	2

¹Positive predictive value: 28%; Negative predictive value: 90%; Sensitivity: 33%; Specificity: 87.8% (P < 0.05). EUS: Endoscopic ultrasound.