Diagnostic classification of endosonography for differentiating colorectal ulcerative diseases: A new statistical method

Table 3 Common endoscopic ultrasound parameters of the bowel wall in Crohn’s disease, primary intestinal lymphoma and intestinal tuberculosis n (%)

	CD	PIL	ITB
Thickened layers
None	6 (3.0)	0 (0)	2 (10.0)
M	21 (10.5)	5 (16.7)	14 (70.0)
SM	160 (80.0)	2 (6.7)	0 (0)
M + SM	4 (2.0)	0 (0)	1 (5.0)
SM + MP	3 (1.5)	0 (0)	0 (0)
All	2 (1.0)	0 (0)	0 (0)
Layers disappeared1	4 (2.0)	23 (76.7)	3 (15.0)
Thinned layers
SM	0 (0)	0 (0)	6 (30.0)
M/SM border
Clear	85 (42.5)	3 (10.0)	8 (40.0)
Unclear	111 (55.5)	4 (13.3)	9 (45.0)
Invisible	4 (4.0)	23 (76.7)	3 (15.0)
SM/MP border
Clear	157 (78.5)	3 (10.0)	12 (60.0)
Unclear	41 (21.5)	4 (13.3)	5 (25.0)
Invisible	2 (1.0)	23 (76.7)	3 (15.0)
Echo level of main lesion or changed layer
1 (hyperechoic)	14 (7.0)	0 (0)	4 (20.0)
2	166 (83.0)	0 (0)	12 (60.0)
3 (medium)	3 (1.5)	3 (10.0)	1 (5.0)
4	11 (5.5)	5 (16.7)	1 (5.0)
5 (hypoechoic)	6 (3.0)	22 (73.3)	2 (10.0)
Echo homogeneity2
Homogeneous	87 (43.5)	23 (76.7)	5 (25)
Heterogeneous	106 (53)	7 (23.3)	13 (65)
Diffuse lesion	3 (1.5)	26 (86.7)	0 (0)
Serosal integrity
Smooth	185 (92.5)	14 (46.7)	15 (75)
Non-smooth	9 (4.5)	2 (6.6)	4 (20)
Interrupted	6 (3)	14 (46.7)	1 (5)

¹Absent layers were included in the thickened layers because when the layers disappeared it was impossible to recognize the thickness change;

²Seven CD and two ITB cases were excluded because the thickness of the layers was too small and the echo homogeneity was difficult to determine. The options without matched cases are not given. CD: Crohn’s disease; ITB: Intestinal tuberculosis; M: Mucosa; MP: Muscularis propria; PIL: Primary intestinal lymphoma; SM: Submucosa.