Endoscopic ultrasonography-related diagnostic accuracy and clinical significance on small rectal neuroendocrine neoplasms

Table 1 The characteristics of 84 lesions with rectal neuroendocrine neoplasms

	Total
Number	84
Age (yr)	44.6 ± 13.4
Gender (male, %)	60.0 (45/79)
Lesion size (mm)	7.9 ± 3.2
R0 resection (%)	86.9 (73/84)
Vascular invasion (%)	1.2 (1/84)
Histologic grade (%)
G1	89.3 (75/84)
G2	10.7 (9/84)
Depth of invasion (%)
Mucosa	7.1 (6/84)
Submucosa	92.9 (78/84)

Table 2 Findings of histology and endoscopic ultrasonography-based diagnosis of 108 rectal subepithelial lesions

EUS diagnosis	Histology diagnosis		Total
	NENs	Non-NENs
NENs	84	11	95
Non-NENs	1	12	13
Total	85	23	108

EUS: Endoscopic ultrasonography; NENs: Neuroendocrine Neoplasms.

Table 3 Comparison of invasion depth for rectal neuroendocrine neoplasms via endoscopic ultrasonography and histology

EUS assessment	Histology diagnosis		Total
	Mucosa	Submucosa
The 2th layer	5	5	10
The 3th layer	1	73	74
Total	6	78	84

EUS: Endoscopic ultrasonography; NENs: Neuroendocrine Neoplasms.