TY - JOUR
T1 - Imaging features of bile duct adenoma
T2 - Case series and review of literature
AU - Chuy, Jeffrey A.
AU - Garg, Ishan
AU - Graham, Rondell P.
AU - Vanburen, Wendaline M.
AU - Venkatesh, Sudhakar K.
N1 - Publisher Copyright:
© Turkish Society of Radiology 2018.
PY - 2018/9
Y1 - 2018/9
N2 - PURPOSE We aimed to evaluate the imaging features of bile duct adenoma (BDA) on ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI). METHODS Retrospective search in our institution database was performed for histologically confirmed BDA. Their imaging studies before histologic confirmation were reviewed. The search identified seven adults (mean age, 52.9 years) with histologically proven single BDA each. US (n=3), CT (n=5), and MRI (n=3) were performed before histologic confirmation. Additionally, a systematic English literature review for BDA and reported imaging findings since 2000 was also conducted using the following search criteria “bile duct adenoma, peribiliary hamartoma, biliary adenoma, CT, ultrasound, MRI” (date range: 01/01/2000 through 08/31/2016). The imaging findings of those cases reported were summarized and compared with our series. RESULTS All seven individual nodules were well circumscribed. Five lesions were located in the right hepatic lobe and two in the left hepatic lobe. On US, lesions appeared hypoechoic (n=2) and hyperechoic (n=1). BDA was hypodense on unenhanced CT images (n=1). On MRI, BDA were hypointense on T1 (n=3), hyperintense on T2 (n=3), and hyperintense on diffusion-weighted images (n=2). On contrast-enhanced CT and MRI, BDAs showed arterial phase hyperenhancement that persisted on portal venous/delayed phase images. CONCLUSION BDA demonstrates characteristic arterial phase hyperenhancement that persisted into the portal venous and delayed phases on CT and MRI, which may be useful in differentiating from other hepatic lesions.
AB - PURPOSE We aimed to evaluate the imaging features of bile duct adenoma (BDA) on ultrasonography (US), computed tomography (CT), and magnetic resonance imaging (MRI). METHODS Retrospective search in our institution database was performed for histologically confirmed BDA. Their imaging studies before histologic confirmation were reviewed. The search identified seven adults (mean age, 52.9 years) with histologically proven single BDA each. US (n=3), CT (n=5), and MRI (n=3) were performed before histologic confirmation. Additionally, a systematic English literature review for BDA and reported imaging findings since 2000 was also conducted using the following search criteria “bile duct adenoma, peribiliary hamartoma, biliary adenoma, CT, ultrasound, MRI” (date range: 01/01/2000 through 08/31/2016). The imaging findings of those cases reported were summarized and compared with our series. RESULTS All seven individual nodules were well circumscribed. Five lesions were located in the right hepatic lobe and two in the left hepatic lobe. On US, lesions appeared hypoechoic (n=2) and hyperechoic (n=1). BDA was hypodense on unenhanced CT images (n=1). On MRI, BDA were hypointense on T1 (n=3), hyperintense on T2 (n=3), and hyperintense on diffusion-weighted images (n=2). On contrast-enhanced CT and MRI, BDAs showed arterial phase hyperenhancement that persisted on portal venous/delayed phase images. CONCLUSION BDA demonstrates characteristic arterial phase hyperenhancement that persisted into the portal venous and delayed phases on CT and MRI, which may be useful in differentiating from other hepatic lesions.
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U2 - 10.5152/dir.2018.18036
DO - 10.5152/dir.2018.18036
M3 - Article
C2 - 30211677
AN - SCOPUS:85053257846
SN - 1305-3825
VL - 24
SP - 249
EP - 254
JO - Diagnostic and Interventional Radiology
JF - Diagnostic and Interventional Radiology
IS - 5
ER -