Endoscopic characteristics of small intestinal malignant tumors observed by balloon-assisted enteroscopy

Table 2 Endoscopic characteristics of the small intestinal malignant tumors

	Group 1 (Epithelial) (%)	Group 2 (Malignant lymphoma) (%)	Group 3 (GIST) (%)	P-value
Tumor location
Duodenum	43.8 (7/16)	18.2 (4/22)	16.7 (1/6)	0.18
Jejunum	31.3 (5/16)	50.0 (11/22)	66.7 (4/6)	0.28
Ileum	25.0 (4/16)	45.5 (10/22)	16.7 (1/6)	0.26
Solitary lesion	100.0 (16/16)	45.5 (10/22)	100.0 (6/6)	< 0.001
Type or form
Solitary
Protruded or mass type	31.3 (5/16)	0 (0/22)	66.7 (4/6)	< 0.001
Ulcerated type (with raised margins)	37.5 (6/16)	40.9 (9/22)	33.3 (2/6)	0.94
Infiltrative ulcerated type	31.3 (5/16)	0 (0/22)	0 (0/6)	0.007
Multiple
Multiple ulcers	0 (0/16)	22.7 (5/22)	0 (0/6)	0.06
MLP	0 (0/16)	13.6 (3/22)	0 (0/6)	0.20
Others	0 (0/16)	22.7 (5/22)	0 (0/6)	N/A
Presence of stenosis	68.8 (11/16)	27.3 (6/22)	0 (0/6)	0.004
Presence of bleeding	43.8 (7/16)	22.7 (5/22)	16.7 (1/6)	0.178
White villi	12.5 (2/16)	54.5 (12/22)	0 (0/6)	< 0.001

GIST: Gastrointestinal stromal tumor; MLP: Multiple lymphomatous polyposis.