Bile duct hamartomas (von Mayenburg complexes) mimicking liver metastases from bile duct cancer: MRC findings.
We present a case of a 72-year-old man with a common bile duct cancer, who was initially believed to have multiple liver metastases based on computed tomography findings, and in whom magnetic resonance cholangiography (MRC) revealed a diagnosis of bile duct hamartomas. At exploration for pancreaticoduodenectomy, liver palpation revealed disseminated nodules at the surface of the liver. These nodules showed gray-white nodular lesions of about 0.5 cm in diameter scattered on the surface of both liver lobes, which were looked like multiple liver metastases from bile duct cancer. Frozen section of the liver biopsy disclosed multiple bile ducts with slightly dilated lumens embedded in the collagenous stroma characteristics of multiple bile duct hamartomas (BDHs). Only two reports have described the MRC features of bile duct hamartomas. Of all imaging procedures, MRC provides the most relevant features for the imaging diagnosis of bile duct hamartomas.
Nagano
Yasuhiko
Y
Yokohama City University Medical Center, Gastroenterological Center, 232-0024 4-57 Urafunecho, Minami-ku, Yokohama City, Japan. yasuhiko@urahp.yokohama-cu.ac.jp
Matsuo
Kenichi
K
Gorai
Katsuya
K
Sugimori
Kazuya
K
Kunisaki
Chikara
C
Ike
Hideyuki
H
Tanaka
Katsuaki
K
Imada
Toshio
T
Shimada
Hiroshi
H
D000368:Aged; D001649:Bile Duct Diseases / Q000175:diagnosis* / Q000473:pathology; D001650:Bile Duct Neoplasms / Q000175:diagnosis* / Q000473:pathology*; D049448:Cholangiopancreatography, Magnetic Resonance; D003937:Diagnosis, Differential; D006222:Hamartoma / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000556:secondary*; D008279:Magnetic Resonance Imaging; D008297:Male; D009362:Neoplasm Metastasis / Q000175:diagnosis* / Q000473:pathology