Biliary tract injuries can occur during different surgical procedures such as hepatectomy and gastrectomy with the most injuries appear during the biliary tree surgery, particularly cholecystectomy . As the number of cholecystectomies has risen with the development of laparoscopic surgery, the bile duct injuries have increased .
Several reviews have debated biliary injury mechanism such as anatomic biliary variants, inflammatory process (acute or chronic), improper surgical clips on the cystic duct, incompetent dissection and misguided use of cautery .
Post-operative biliary injuries may be classified as a bile leakage, biliary obstruction, “either ligated duct or biliary stricture” or complete duct transection. A ligated or clipped bile duct presented early post-operative by jaundice sequel to biliary obstruction with or without cholangitis .
Several imaging approaches can be used for suspected BDIs with ultrasound and CT [17, 18] were considered the first diagnostic modalities, particularly in suspected bile leak with the following findings: localized fluid collection in the gallbladder bed or near porta hepatis (biloma) and free collection in the perihepatic, subhepatic or other peritoneal spaces. Hepatobiliary isotope scan is sensitive for bile leak detection, but lack spatial resolution with inability to detect the exact leak site. Abdominal pain, tenderness, distension, and fever are symptomatic features of biliary leakage. It has to be kept in mind that intraperitoneal bile does not get absorbed and may get infected leading to sepsis .
MR cholangiography is a safe diagnostic tool in distinguishing the post-operative bile duct injuries with early perfect management and better results. These bile duct injuries may manifest in the early post-operative period or later leading to high morbidity with decline in the patients’ quality of life and high medical cost .
In this study, MRCP was found to be perfect in assessing patients with BDIs, since it was able to estimate the stenotic segment as well as the supra and infra-stenotic sectors. This imaging tool really diagnosed iatrogenic biliary injuries in all 37 patients with successful visualization of the biliary tree anatomy. As MRCP was done without contrast administration, it is less accurate in recognizing the origin of leak. ERCP is beneficial to localize the biliary leak with therapeutic availability after laparoscopy, but it is an invasive maneuver with major complications. Our data was compatible with other studies Yeh  and Khalid  who have estimated the role of MRCP in patients with suspected iatrogenic BDIs.
Transection injury was the most common biliary injury encountered in our study, representing 54.1%. On MRCP, a lack of duct visualization with associated fluid collection suspect duct disruption. In transection bile duct injury, associated biliary dilatation was unlikely. The discrimination between biliary transection and obstruction may be difficult. Nevertheless, biliary dilatation upstream with no associated fluid collection was likely representing post-operative biliary obstruction, either ligated duct (early post-operative) or biliary stricture (late post-operative).
According to the Strasberg-Bismuth classification, showed that E2 and E1 are the most experienced types within our cases, representing 29.7% and 18.9% respectively. This agreed with Van Hoe et al.  who reported that the typical biliary injury site is in CBD, near the cystic duct insertion or the hepatic confluence.
MRCP has a limitation as it tends to exaggerate the stricture length as the duct may be collapsed instantly distal to the stricture. Ideal survey of the source images minimizes such drawback. It is essential to identify this limitation, especially with surgical repair, as only the proximal segment of the stricture is applicable with the distal extent overestimated at MRCP. Additionally, MRCP without contrast administration lacks the functional capability in detection of bile duct leaks [22, 23].
Our findings and that of others [24,25,26,27] suggest that it is unlikely that a biliary injury will be missed on MRCP. Further MRCP has sensitivity of 100% in localizing the site of biliary obstruction as well as duct transection.
Kapoor  documented that, “A classification should address topics related to mechanism, treatment, avoidance and prognosis". None of the suggested classifications deal with all topics namely injury mechanism, means of presentation, patient’s status including presence of cholangitis and associated vascular injury. An ideal biliary injury classification still evades us.