2017 WSES guidelines on colon and rectal cancer emergencies: obstruction and perforation

Table 2 Comparison of imaging studies for confirmation, cause and site of LBO

	Confirmation of LBO obstruction		Cause of LBO		Site of LBO
	Sensitivity	Specificity	Sensitivity	Specificity	Sensitivity	Specificity
Plain X-ray	74–84% [26]	50–72% [26, 211, 212]	0	7% [212]	0	60% [212]
Abdominal US	88% [211]	76% [211]	0	23% [212]	0	70% [212]
Colonic enema	96% [26]	98% [26]	0	96% [26]	96% [26]	98% [26]
CT scan	93–96% [212, 213]	93–100% [212, 213]	0	66–87% [212, 214]	95% [213]	90–94% [29, 213]

ISSN: 1749-7922