Clinical literature review of 1858 Crohn's disease cases requiring surgery in China

Table 1 Summary of the surgical indications n (%)

Surgical indication	Cases
Intestinal obstruction or stricture	443 (23.84)
Peritonitis or other acute abdominal disease	250 (13.46)
Abdominal mass	203 (10.93)
Intestinal fistulae1	184 (9.90)
Internal fistulae	62 (3.34)
External fistulae	45 (2.42)
Vaginal fistulae	5 (0.27)
Vesical fistulae	15 (0.81)
Other unclassified fistulae	58 (3.12)
Intestinal perforation	157 (8.45)
Perianal disease2	125 (6.73)
Perianal abscess	22 (1.18)
Perianal fistulae	61 (3.28)
Perianal fissure	4 (0.22)
Perianal ulcer	2 (0.11)
Perianal fistulae and fissure	10 (0.54)
Perianal fistulae and ulcer	5 (0.27)
Other unclassified perianal disease	21 (1.13)
Gastrointestinal bleeding	89 (4.79)
Abdominal abscess	75 (4.04)
Intestinal adhesion	50 (2.69)
Failure of drug therapy	275 (14.80)
Pyloric obstruction	4 (0.22)
Colic intussusception	3 (0.16)

¹The percentage of each type of fistulae in 1858 cases;

²The percentage of each perianal disease in 1858 cases.