State-of-the-art MR Imaging of Fat-containing Focal Lesions of the Liver.

Background: Fat can be identified in numerous liver lesions, and usually is not a specific finding. Distinguishing between different kinds of fatty deposits is an important part of differential diagnosis. Magnetic Resonance Imaging (MRI) is superior to other imaging techniques because it allows distinguishing intracellular from macroscopic fat.

Magnetic Resonance Imaging of Uncommon Hepatic Mesenchymal Tumours: Haemangioendothelioma and Angiosarcoma.

Background: Primary Hepatic Epithelioid Haemangioendothelioma (HEHE) and Primary Hepatic Angiosarcoma (PHA) are rare mesenchymal tumours with different malignant potential. Whereas HEHE demonstrates low to intermediate malignant potential, PHA is an aggressive malignancy with poor prognosis. The knowledge of typical imaging features of these lesions may facilitate correct diagnosis; however, the ultimate diagnosis of HEHE and PHA is based on histopathologic examination.

State-of-the-art MR Imaging of Uncommon Hepatocellular Tumours: Fibrolamellar Hepatocellular Carcinoma and Combined Hepatocellularcholangiocarcinoma.

Background: Fibrolamellar Carcinoma (FLC) and Combined Hepatocellular- Cholangiocarcinoma (CHC) are rare primary liver tumours, which are related to different clinical settings. In both tumours, correlation with clinical data and laboratory tests are extremely important.

Discussion: Typically, FLC is diagnosed in young patients without any chronic disease and with normal biochemical tests, whereas CHC arises in cirrhotic patients with elevated tumour markers: AFP and/or CA 19-9.

Optimal b-values for diffusion kurtosis imaging of the liver and pancreas in MR examinations.

Purpose: The objective was to optimise the number of b-values for diffusion kurtosis imaging (DKI) of the liver and pancreas in MR examinations to ensure reliable results with the shortest possible acquisition time.

Methods: Twenty healthy volunteers underwent DKI at 3.0 T Siemens Magnetom Skyra using 7 b-values (b = 0, 200, 500, 750, 1000, 1500, 2000 s/mm).

Cystic lymphangiomatous lesions of the adrenal gland: A clinicopathological study of 37 cases including previously unreported cysts with papillary endothelial proliferation.

Published data regarding lymphangiomatous cysts of the adrenal glands (also known as adrenal cystic lymphangiomas) are limited to case reports and a few small case series. We analyzed the clinicopathologic features and histomorphologic spectrum of 37 cases of adrenal cystic lymphangiomatous lesions. There were 26 females and 11 males ranging from 12 to 67 years old (median, 34 years).

Reproducibility of intravoxel incoherent motion of liver on a 3.0T scanner: free-breathing and respiratory-triggered sequences acquired with different numbers of excitations.

Purpose: To optimise the intravoxel incoherent motion (IVIM) imaging of the liver on a 3.0T scanner by assessing parameter reproducibility on free-breathing (FB) and respiratory-triggered (RT) sequences acquired with different numbers of signal averages (NSA).

Material And Methods: In this prospective study 20 subjects (M/F: 10/10; age: 25-62 years, mean: 39 years) underwent IVIM magnetic resonance imaging (MRI) on a 3.

The Role of Computed Tomography in the Diagnostics of Diaphragmatic Injury After Blunt Thoraco-Abdominal Trauma.

Background: Diaphragmatic injuries occur in 0.8-8% of patients with blunt trauma. The clinical diagnosis of diaphragmatic rupture is difficult and may be overshadowed by associated injuries.

Biliary complications after liver transplantation: The role of MR imaging using different hydrographic sequences in patients with biliary-enteric and duct-to-duct biliary anastomosis.

Background: To aim of this study was to assess the diagnostic performance of the state-of-the-art magnetic resonance cholangiography (MRC) comprising several 2D and 3D hydrographic sequences in patients after liver transplantation with biliary-enteric and duct-to-duct biliary anastomosis.

Material And Methods: Retrospective analysis included MRC examinations of 42 patients (21 men, 21 women) performed from 18 days to 86 months (average, 18.9 months) after liver transplantation.

Epithelioid hemangioendothelioma of the liver: the role of hepatobiliary phase imaging for the preoperative diagnosis and qualification of patients for liver transplantation -- preliminary experience.

Background: The aim of this study was to determine if the appearance of hepatic epithelioid hemangioendothelioma (HEHE) on state-of-the-art MRI including hepatocyte phase after administration of hepatobiliary contrast agent can facilitate preoperative diagnosis and identification of potential candidates for liver transplantation.

Material And Methods: The study group comprised 6 patients with pathologically confirmed HEHE. Analysis included signal characteristics of 55 tumor nodules (maximum of 10 lesions per patient) on T2-weighted images, dynamic contrast-enhanced, 5-minute delayed, and hepatobiliary phase images.

Angiomyolipoma of the liver: analysis of typical features and pitfalls based on own experience and literature.

We present imaging findings (ultrasound, computed tomography, and magnetic resonance imaging) of eight patients with hepatic angiomyolipoma (HAML). The lesions were solitary in seven patients, and one patient had multiple tumors (n=11). Angiomyolipoma, even though a rare liver tumor, should be included in the differential diagnosis in cases of highly vascularized lesion containing a significant amount of fat.

Characterization of focal liver lesions using quantitative techniques: comparison of apparent diffusion coefficient values and T2 relaxation times.

Objectives: To compare the efficacy of two quantitative methods for discrimination between benign and malignant focal liver lesions (FLLs): apparent diffusion coefficient (ADC) values and T2 relaxation times.

Methods: Seventy-three patients with 215 confirmed FLLs (115 benign, 100 malignant) underwent 1.5-T MRI with respiratory-triggered single-shot SE DWI (b = 50, 400, 800) and dual-echo T2TSE (TR = 3,000 ms; TE1 = 84 ms; TE2 = 228 ms).