A proposed feasible classification of common bile duct duplications based on a newly described variant and review of existing literature

Sheng, Huixue; Chen, Guiling; Yang, Ming–Hsuan; Guan, Hongmei

doi:10.1186/s12887-022-03708-1

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…In the medical literature, Type I common bile duct duplications are documented to represent a very low proportion of bile duct duplications in the Western (3.6%) and Japanese populations (6.8%) whilst they are more common in Chinese individuals (58.3%) [ 7 - 10 ]. Our case report shows a few similarities to this type of common bile duct duplication, including the recently described type Ia variant by Sheng et al [ 4 ]. This reported variant is characterized by the presence of a complete septum in the bile duct lumen which is connected to the right and left hepatic ducts, and shows two distal openings into the duodenum.…”

Section: Discussionsupporting

confidence: 72%

“…The classification of duplicated common bile ducts was introduced in 1972 by Goor and Ebert [ 1 ] which was later modified by Choi et al in 2007 [ 3 ] and includes five types of common bile duct duplication. This system was revised in 2022 by Sheng et al [ 4 ] who included a subdivision of type I into a (partial) and b (complete septum within the bile duct lumen), along with minor additions to type V ( Figure 1 ).…”

Section: Introductionmentioning

confidence: 99%

“… Classification of bile duct duplication as revised by Sheng et al in 2022 [ 4 ]. Redrawn from Sheng et al [ 4 ]. …”

Section: Introductionmentioning

confidence: 99%

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An unusual variant of Type I common bile duct duplication associated with ampullary carcinoma

Bancu,

Poundall,

Santos

2024

Arch Clin Cases

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Common bile duct duplications represent exceptionally rare congenital anomalies of the biliary tract. In this case report we document an unusual variant of common bile duct duplication in a 79-year-old man who underwent a pancreaticoduodenectomy for ampullary cancer. The duplication consisted of two unseparated, completely-layered, common bile ducts which originated above the cystic duct junction and terminated prior to the point of insertion into the pancreas, where the two lumens converged into a single duct. Duplication of the bile duct is rare and often goes undetected. In the present case, the anomaly was found incidentally in a patient who had a pancreaticoduodenectomy for an ampullary carcinoma. However, duplication may be associated with choledocholithiasis, cholangitis, pancreatitis, and pancreaticobiliary malignancies and it is important to be aware of the condition.

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Section: Discussionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

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An unusual variant of Type I common bile duct duplication associated with ampullary carcinoma

Bancu,

Poundall,

Santos

2024

Arch Clin Cases

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Diseases of the Gallbladder and the Biliary Tree

Richard

Boll

2023

IDKD Springer Series

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Cross-sectional imaging modalities including ultrasound (US), magnetic resonance (MR) imaging, and computed tomography (CT) play a critical role in the diagnosis of diseases of the biliary tract and gallbladder. Biliary imaging for evaluation of obstructive jaundice seeks to diagnose the level of obstruction and its cause. The identification of dilated bile ducts necessitates evaluation for strictures or filling defects, which is best performed with thin-section CT or T2-weighted MR cholangiography (MRCP). Choledocholithiasis with accompanying cholecystolithiasis is the most common cause of biliary obstruction and modern thin-section three dimensional MR cholangiography is highly sensitive and specific for the detection of stones. Recognition of gallbladder wall thickening and surrounding edema may be seen in acute cholecystitis, identification of bile duct wall thickening raises concern for cholangitis or malignancy. Primary sclerosing cholangitis and secondary sclerosing cholangitis such as recurrent pyogenic cholangitis, and IgG4 related sclerosing disease can develop chronic progressive cholestatic liver disease characterized by inflammation, fibrosis, and stricture of the bile ducts. Familiarity with the typical clinical and radiologic appearances of various etiologies of cholangiopathies and biliary malignancies is also important for accurate image interpretation.

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The Presence of Type Va Double Common Bile Duct in a Male Patient: A Case Report

McDermott,

Gonzalez,

Medina Alonso

et al. 2024

Cureus

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Double common bile duct (DCBD) is a rare congenital anomaly of the biliary system, characterized by the presence of two common bile ducts. The condition can be classified into five distinct types. Type Va DCBD is one of the rare congenital variations where both bile ducts open separately into the duodenum: one opens normally at the major duodenal papilla, and the second opens independently into the duodenum at a different site, usually proximal to the major duodenal papilla. DCBD is often associated with biliary pathologies such as cholelithiasis, choledocholithiasis, choledochal cysts, abnormal pancreaticobiliary junction (APBJ), and upper gastrointestinal malignancies. We present the case of an 83-year-old male from the United States who presented to the emergency department with right upper quadrant (RUQ) pain. Magnetic resonance cholangiopancreatography (MRCP) and endoscopic retrograde cholangiopancreatography (ERCP) revealed a type Va DCBD, complicated by cholelithiasis and acute calculous cholecystitis. The patient underwent a laparoscopic cholecystectomy, along with common bile duct stent placement for biliary drainage. This case highlights the importance of identifying atypical radiologic features indicative of rare congenital biliary anomalies such as type Va DCBD. Given the scarcity of reported cases in the literature, accurate preoperative imaging and early diagnosis of this anomaly are crucial for preventing long-term complications and guiding appropriate surgical management.

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A proposed feasible classification of common bile duct duplications based on a newly described variant and review of existing literature

Cited by 3 publications

References 15 publications

An unusual variant of Type I common bile duct duplication associated with ampullary carcinoma

An unusual variant of Type I common bile duct duplication associated with ampullary carcinoma

Diseases of the Gallbladder and the Biliary Tree

The Presence of Type Va Double Common Bile Duct in a Male Patient: A Case Report

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