Table 3.

Radiographic imaging done in patients with biliary-enteric anastomotic stricture versus those without a stricture at least three months following the index operation (N=403)

	No Stricture N=2971	Stricture N=403	p-value
	Imaging Frequency N (%)	Imaging Frequency N (%)
Imaging Modality
Percutaneous Transhepatic Cholangiography (PTC)	0 (0%)	209 (51.9%)	<0.0001
CT-scan	2071 (69.7%)	375 (93.1%)	<0.0001
Ultrasound	974 (32.8%)	228 (56.6%)	<0.0001
Magnetic Resonance Imaging (MRI)	214 (7.2%)	75 (18.6%)	<0.0001
Endoscopic Retrograde Cholangiopancreatography (ERCP)	40 (1.4%)	1166 (28.8%)	<0.0001