Invited. MRI of Clonorchiasis and Cholagiocarcinoma

Choi, Byung Ihn; Kin, Tea Kyoung; Han, Joon Koo

doi:10.1002/jmri.1880080215

Cited by 25 publications

(7 citation statements)

References 29 publications

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“…The extent of the tumor in the bile duct has been evaluated with direct cholangiography. MRC is considered to be limited for detailed evaluation of the tumor extent in the bile duct because of the limitation of spatial resolution (23). However, recent MRC techniques with HASTE or RARE sequences can produce excellent cholangiographic imaging comparable to direct cholangiography.…”

Section: Discussionmentioning

confidence: 99%

Preoperative evaluation of gallbladder carcinoma: Efficacy of combined use of MR imaging, MR cholangiography, and contrast‐enhanced dual‐phase three‐dimensional MR angiography

Kim¹,

Eun²,

Kim³

et al. 2002

Magnetic Resonance Imaging

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Purpose:To determine the efficacy of the combined use of magnetic resonance (MR) imaging, MR cholangiography (MRC), and MR angiography (MRA) in the preoperative evaluation of gallbladder carcinoma. Materials and Methods:During a 20-month period, 41 patients with proven gallbladder carcinomas were referred for MR examination, including MR imaging, MRC, and gadolinium-enhanced dual-phase MRA to determine the operability of their gallbladder carcinoma. Eighteen patients who underwent surgery within six days of the MR examination were included in this study. All MR images were analyzed in order to assess bile duct invasion, vascular invasion, hepatic invasion or metastasis, lymph node metastasis, and invasion into adjacent organs.Results: Surgical and histopathologic findings revealed hepatic invasion in nine patients, bile duct invasion in nine, vascular invasion in three, and lymph node metastasis in 10. The sensitivity and specificity of MR examination were, respectively, 100% and 89% for bile duct invasion, 100% and 87% for vascular invasion, 67% and 89% for hepatic invasion, and 56% and 89% for lymph node metastasis. Conclusion:The "all-in-one" MR protocol, including MR imaging, MRC, and MRA, can be an effective diagnostic method in the preoperative work-up for gallbladder carcinoma.

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Section: Discussionmentioning

confidence: 99%

Preoperative evaluation of gallbladder carcinoma: Efficacy of combined use of MR imaging, MR cholangiography, and contrast‐enhanced dual‐phase three‐dimensional MR angiography

Kim¹,

Eun²,

Kim³

et al. 2002

Magnetic Resonance Imaging

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“…Radiation and chemotherapy have shown no benefit, with the only possibility of cure being complete surgical resection or transplantation [8, 12, 13]. …”

Section: Diagnosis Treatment and Prognosismentioning

confidence: 99%

Magnetic resonance imaging of cholangiocarcinoma

Vanderveen¹

2004

Cancer Imaging

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Preoperative imaging with MRI/MRA/MRCP is an accurate non-invasive method for staging cholangiocarcinoma, and determining resectability. It provides information regarding tumor size, extent of bile duct involvement, vascular patency, extrahepatic extension, nodal or distant metastases, and the presence of lobar atrophy. MRCP is better for demonstrating bile ducts distal to the stricture, although with ERCP, therapeutic intervention such as stent placement and biopsy can be performed.

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“…21 Dilatation of the peripheral portion of the intrahepatic biliary ducts is occasionally seen in peripheral cholangiocarcinomas, especially in patients associated with clonorchiasis. 22 Capsular retraction is relatively frequent. 23…”

Section: Mass-forming Typementioning

confidence: 99%

Magnetic Resonance Imaging of Cholangiocarcinoma

et al. 2004

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Cholangiocarcinoma arises from the bile ducts and is the most common primary malignancy of the biliary tree. Cholangiocarcinoma is classified according to its growth pattern: mass-forming, periductal-infiltrating, or intraductal-growing type. The majority of cholangiocarcinomas occur at the common hepatic duct (CHD) and its bifurcation, also referred to as Klatskin's tumor, but they also can occur in more peripheral branches within the hepatic parenchyma. Microscopically, cholangiocarcinoma represents an adenocarcinoma with a glandular appearance arising from the epithelium of the bile ducts. On magnetic resonance (MR) images, cholangiocarcinomas appear hypointense on T1-weighted images, and hyperintense on T2-weighted images. Central hypointensity can be seen on T2-weighted images and correspond to fibrosis. On dynamic MR images, cholangiocarcinomas show moderate peripheral enhancement followed by progressive and concentric filling in the tumor with contrast material. Pooling of contrast within the tumor on delayed MR images is suggestive of peripheral cholangiocarcinoma. The role of MR imaging in hilar cholangiocarcinoma is to confirm/reach a diagnosis and to assess resectability. Hilar cholangiocarcinoma shows the same signal intensity pattern of peripheral tumors both on T1- and T2-weighted images. On magnetic resonance cholangiopancreatography (MRCP) images, hilar cholangiocarcinoma appears as a moderately irregular thickening of the bile duct wall (>/=5 mm) with symmetric upstream dilation of the intrahepatic bile ducts. The aim of preoperative investigation in Klatskin tumors typically requires the evaluation of the level of biliary obstruction, the intrahepatic tumor spread, and the vascular involvement; it also needs to show any atrophy-hypertrophy complex. Because of its intrinsic high tissue contrast and multiplanar capability, MR imaging and MRCP are able to detect and preoperatively assess patients with cholangiocarcinoma, investigating all involved structures such as bile ducts, vessels and hepatic parenchyma. The main reason for surgical/imaging discrepancy is represented by the microscopic diffusion along the mucosa and in the perineural space.

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Invited. MRI of Clonorchiasis and Cholagiocarcinoma

Cited by 25 publications

References 29 publications

Preoperative evaluation of gallbladder carcinoma: Efficacy of combined use of MR imaging, MR cholangiography, and contrast‐enhanced dual‐phase three‐dimensional MR angiography

Preoperative evaluation of gallbladder carcinoma: Efficacy of combined use of MR imaging, MR cholangiography, and contrast‐enhanced dual‐phase three‐dimensional MR angiography

Magnetic resonance imaging of cholangiocarcinoma

Magnetic Resonance Imaging of Cholangiocarcinoma

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