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Table 2 Case reports of double-duct sign

From: Biliary type-II sphincter of Oddi dysfunction with a pancreatic duct dilation: a case report and review of the literature

Condition References
Strongyloides stercoralis [9]
Brunner’s gland hamartoma [10]
Serous cystadenoma [11]
Pancreas carcinoma not seen on abdominal ultrasound or CT scan [12]
Gallstones [8]
Somatostatinoma [13]
Sphincter of Oddi dysfunction [2, 3]
Pancreaticobiliary ascariasis [14]
IgG4-related disease mimicking pancreatic cancer [15]
Ampullary cancer demonstrating Courvoisier's sign [16]
Right Bochdalek hernia with right liver agenesis [17]
Afferent loop syndrome after pylorus-preserving pancreaticoduodenectomy [18]
Gastroduodenal intussusception (GISTs) [19]
Carcinoma of Vater's ampulla [20]
Carcinoma of the pancreas associated with anomalous junction of pancreaticobiliary tracts [21]
  1. CT: Computed tomography, Gists: Gastrointestinal stromal tumors, IgG4: Immunoglobulin G4