Analysis of risk factors - especially different types of plexitis - for postoperative relapse in Crohn’s disease

Table 1 Patient characteristics n (%)

Baseline characteristics of patients	n = 104
Mean age at diagnosis (yr)	41.3 ± 14.047
Mean disease duration at the time of the operation (yr)	6.25 ± 6.12
Sex
Female	50 (48)
Male	54 (52)
Age at index resection (yr)
Younger than 40	74 (71.2)
40 and older	30 (28.8)
Smoking history at index surgery
Current smoker	32 (30.8)
Never smoked	68 (65.4)
Ex-smoker	4 (3.8)
Montréal classification
A1 (< 16 yr)	15 (14.4)
A2 (between 17 and 40 yr)	71 (68.3)
A3 (> 40 yr)	18 (17.3)
B1 (nonstricturing, nonpenetrating)	12 (11.5)
B2 (stricturing)	52 (50)
B3 (penetrating)	40 (38.5)
L1 (isolated ileal disease)	51 (49)
L2 (isolated colonic disease)	22 (21.2)
L3 (ileocolonic disease)	31 (29.8)
L4 (isolated upper disease)	0 (0)
p (perianal disease modifier)	14 (13.5)
Type of index resection
Ileocolonic resection	76 (73.1)
Colonic resection	23 (22.1)
Small bowel resection	5 (4.8)
Previous resection before index surgery	26 (25)

Table 2 Inflammatory cell count of histopathological findings (n = 104)

	Median	IQR, 25th to 75th
Myenteric plexus
Eosinophils	0	0-1
Lymphocytes	2	1-4
Neutrophils	0	0-0
Plasmocytes	2	1-3
Mastocytes	0	0-0
Submucosal plexus
Eosinophils	0	0-0
Lymphocytes	2	1-3
Neutrophils	0	0-0
Plasmocytes	1	0-3
Mastocytes	0	0-0