Demographics and clinical characteristics Demographics and clinical characteristics Demographics and clinical characteristics Results
Age (yr), mean (range) Age (yr), mean (range) Age (yr), mean (range) 56 (35-82)
Sex, n (%) Sex, n (%) Sex, n (%)
Male Male 6 (27.3)
Female Female 10 (45.4)
Not identified Not identified 6 (27.3)
Location of colon perforation, n (%) Location of colon perforation, n (%) Location of colon perforation, n (%)
Sigmoid colon Sigmoid colon 12 (54.5)
Descending colon Descending colon 2 (9.1)
Transverse colon Transverse colon 2 (9.1)
Ileocecal valve Ileocecal valve 1 (4.6)
Not identified Not identified 5 (22.7)
Main cause of perforation, n (%) Main cause of perforation, n (%) Main cause of perforation, n (%)
With polypectomy With polypectomy 15 (68.2)
Direct trauma by endoscope 4 (18.2)
Barotrauma 2 (9.1)
Thermal injury 1 (4.5)
Not identified 8 (36.4)
Without polypectomy Without polypectomy 7 (31.8)
Direct trauma by endoscope 2 (9.1)
Not identified 5 (22.7)
Time elapsed from procedure to diagnosis of perforation, n (%) Time elapsed from procedure to diagnosis of perforation, n (%) Time elapsed from procedure to diagnosis of perforation, n (%)
Immediately by doctor (during procedure) Immediately by doctor (during procedure) 9 (40.9)
Within 24 hours Within 24 hours 4 (18.2)
24-72 hours 24-72 hours 9 (40.9)
Interventions for colon perforation, n (%) Interventions for colon perforation, n (%) Interventions for colon perforation, n (%)
Transfer to other institution for optimal management Transfer to other institution for optimal management 13 (59.1)
Treatment at the institution (defendant) Treatment at the institution (defendant) 9 (40.9)
Type of surgical treatment the patient received, n Type of surgical treatment the patient received, n Type of surgical treatment the patient received, n
Simple closure Simple closure 7
Temporary colostomy Temporary colostomy 7
Segmental resection Segmental resection 4
Not identified Not identified 3
Final clinical outcomes after perforation, n (%) Final clinical outcomes after perforation, n (%) Final clinical outcomes after perforation, n (%)
Recovery after treatment Recovery after treatment 17 (77.3)
Death Death 5 (22.7)