[Recurrent non-Hodgkin lymphoma of various subtypes and localizations of manifestation - case report of a recognized occupational disease caused by ionizing radiation].

A 77-year-old former MTA had been exposed to ionizing radiation for several years, e.g. during X-ray fluoroscopy and mouth pipetting of radioactive isotopes.

Improved Outcomes from Prolonged Percutaneous Biliary Drainage in Pediatric Patients with Biliary Stenosis after Liver Transplantation.

Purpose: Biliary complications affect 15-40% of pediatric liver transplants (pLT), with biliary strictures (BS) occurring in 5-23%. Roux-en-Y hepaticojejunostomy is the primary reconstructive technique. This study evaluates patency rates, outcomes of percutaneous transhepatic biliary drainage (PTBD), and predictors of stenosis recurrence.

Phantom-based training of ultrasound-guided breast biopsy in medical education: a randomized controlled trial comparing handheld and high-end ultrasound.

Background: Modern handheld ultrasound devices (HUDs) are attractive for teaching programs in undergraduate medical education due to their miniaturization and portability along at relatively low cost. They offer high-resolution imaging and are easy to use, opening up new possibilities for training of novices in ultrasound (US)-guided percutaneous procedures. The objective of this study was to investigate if guidance by HUD is on par with a cart-based high-end ultrasound scanner (HEUS) regarding performance times and success rates in video- and phantom-based training of novices in US-guided freehand breast biopsy.

Spleno-Mesenteric Venous Blood Flow Dynamics in Adult Patients with Chronic Portal Vein Thrombosis Analyzed by Sequential CT-Spleno- and Mesenterico-Portography.

Background: Portal vein thrombosis (PVT) leads to portal hypertension (PH) with its sequelae. Computed tomography spleno-mesenterico-portography (CT-SMPG) combines sequential CT spleno-portography and CT mesenterico-portography. CT-SMPG comprehensively illustrates the venous hemodynamic changes due to PH.

Intravenous Opioid Medication with Piritramide Reduces the Risk of Pneumothorax During CT-Guided Percutaneous Core Biopsy of the Lung.

Purpose: CT-guided percutaneous core biopsy of the lung is usually performed under local anesthesia, but can also be conducted under additional systemic opioid medication. The purpose of this retrospective study was to assess the effect of intravenous piritramide application on the pneumothorax rate and to identify risk factors for post-biopsy pneumothorax.

Materials And Methods: One hundred and seventy-one core biopsies of the lung were included in this retrospective single center study.

Deep learning-based differentiation of peripheral high-flow and low-flow vascular malformations in T2-weighted short tau inversion recovery MRI.

Background: Differentiation of high-flow from low-flow vascular malformations (VMs) is crucial for therapeutic management of this orphan disease.

Objective: A convolutional neural network (CNN) was evaluated for differentiation of peripheral vascular malformations (VMs) on T2-weighted short tau inversion recovery (STIR) MRI.

Methods: 527 MRIs (386 low-flow and 141 high-flow VMs) were randomly divided into training, validation and test set for this single-center study.

Biliary Leak after Pediatric Liver Transplantation Treated by Percutaneous Transhepatic Biliary Drainage-A Case Series.

Background: Biliary leaks are a severe complication after pediatric liver transplantation (pLT), and successful management is challenging.

Objectives: The aim of this case series was to assess the outcome of percutaneous transhepatic biliary drainage (PTBD) in children with bile leaks following pLT. The necessity of additional percutaneous bilioma drainage and laboratory changes during therapy and follow-up was documented.

Comparison of wireless handheld ultrasound and high-end ultrasound in pediatric patients with venous malformations - First results.

Aim: To evaluate the usefulness of handheld ultrasound in comparison with high-end ultrasound for lesion evaluation before and after sclerotherapy in pediatric patients with venous malformations (VMs).

Material And Methods: 10 pediatric patients prior to and after sclerotherapy were scanned by an experienced examiner using handheld ultrasound (Vscan AirTM) and high-end ultrasound (LOGIQ E9/E10) as reference. Patients with associated venous thromboses and intralesional aneurysms had been excluded.

Structured magnetic resonance imaging-based characterization of the marginal vein reveals limits of the Weber-classification.

The marginal vein (MV) is a persisting embryonic vein located at the lateral aspect of the lower limb. The Weber-classification, which was developed on the basis of phlebography in the 1990s, is the only existing classification system for this rare disease. Aim of this study was the structured characterization of the lateral marginal vein (MV) using magnetic resonance imaging (MRI) and evaluation of the applicability of the Weber-classification.

Comparison of sequential CT arterioportography-arteriosplenography with standard cross-sectional imaging and endoscopy in children with portal hypertension.

In this study the diagnostic capability and additional value of sequential CT arterioportography-arteriosplenography (CT AP-AS) in comparison to standard cross-sectional imaging and upper gastrointestinal endoscopy (UGE) in pediatric portal hypertension (PH) was analyzed. Patients with clinical signs of PH who underwent CT AP-AS in combination with additional contrast-enhanced magnetic resonance imaging (CE-MR) and/or contrast-enhanced computed tomography (CE-CT) were included. Two radiologists reviewed independently imaging regarding the capability to prove patency of (1) extrahepatic and intrahepatic main stem portal vein (PV), (2) intrahepatic PV system and (3) splenomesenteric venous axis.

Sequential CT arterioportography-arteriosplenography depicts individual haemodynamic changes in children with portal hypertension without cirrhosis.

We evaluated sequential computed tomography (CT) arterioportography-arteriosplenography for the assessment of venous pathways in children with portal hypertension without cirrhosis. Institutional Review Board approval was obtained for this retrospective, single-centre study. CT was performed after contrast application via catheters placed in the superior mesenteric artery (CT arterioportography) and the splenic artery (CT arteriosplenography) consecutively.

3T MRI of Peripheral Vascular Malformations: Characteristics and Comparison of Two Fat-Saturated sequences: Short Tau Inversion Recovery Versus Three-Dimensional High-Resolution Volume Interpolated Gradient Recalled Echo.

Purpose:  To assess morphological and hemodynamic characteristics of peripheral vascular malformations on 3 T magnetic resonance imaging (MRI) including qualitative comparison of two fat-saturated sequences: short tau inversion recovery (STIR) and three-dimensional high-resolution volume interpolated gradient recalled echo (GRE).

Materials And Methods:  During 9 months, 100 patients with suspected or known vascular malformations were prospectively assessed on a 3 T scanner using T2-weighted STIR and turbo spin echo (TSE), T1-weighted TSE, time-resolved contrast-enhanced magnetic resonance angiography (MRA) with interleaved stochastic trajectories (TWIST) and T1-weighted volume interpolated breath-hold examination (VIBE) after contrast enhancement. The analysis included signal behavior and morphologic and hemodynamic characteristics.

MR imaging of venous malformations: sciatic nerve infiltration patterns and involved muscle groups.

The aim of this retrospective cross-sectional study was to provide an MRI-based examination framework of venous malformations (VMs) infiltrating the sciatic nerve and determine the frequency of nerve infiltration patterns and muscle involvement in correlation to the patients' quality of life. Pelvic and lower limb MR images of 378 patients with vascular malformations were examined retrospectively. Pain levels and restriction of motion were evaluated with a questionnaire.

Author Correction: Rectosigmoidal manifestations of venous malformations: MR imaging findings and interdisciplinary therapeutic modalities.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

Rectosigmoidal manifestations of venous malformations: MR imaging findings and interdisciplinary therapeutic modalities.

The aim of this study was to identify the frequency of rectosigmoidal involvement in patients with venous malformations (VM) of the lower extremities and to demonstrate multidisciplinary therapeutic options. The medical records and magnetic resonance images (MRI) of patients with VM of the lower extremities, over a six-year period, were reviewed retrospectively in order to determine the occurrence of rectosigmoidal involvement. Vascular interventions, surgical treatments, percutaneous and hybrid (endoscopy-guided angiography) sclerotherapy and procedural complications (according to Clavien-Dindo classification) were also noted.

Venous Malformations: Phleboliths Correlate With the Presence of Arteriovenous Microshunts.

Objective: The objective of this study was to identify differences between venous malformations (VMs) with arteriovenous (AV) microshunts and VMs without AV microshunts.

Materials And Methods: In this retrospective study, 83 patients with untreated VMs of the extremities underwent a prospectively defined MRI protocol performed at 3 T. MR images were reviewed to determine localization and extent of each VM and tissue involvement.

Ethanol-Gel Sclerotherapy of Venous Malformations: Effectiveness and Safety.

Objective: In the treatment of venous malformations, ethanol may be administered in a gelified form to increase local effects and reduce systemic ones. The purpose of this prospective study was to evaluate the efficacy and safety of a commercially available viscous ethanol gel in the treatment of venous malformations.

Subjects And Methods: Thirty-one patients (mean age, 23.

Ethanolgel sclerotherapy of venous malformations improves health-related quality-of-life in adults and children - results of a prospective study.

Objectives: To assess the treatment-induced changes of health-related quality-of-life (HRQoL) in patients with venous malformations (VM) who underwent ethanol gel sclerotherapy.

Methods: The prospective study in children and adults was approved by the local ethics committee. 31 patients (mean age 23.

Time-resolved magnetic resonance angiography (MRA) at 3.0 Tesla for evaluation of hemodynamic characteristics of vascular malformations: description of distinct subgroups.

Objectives: Quantitative evaluation of hemodynamic characteristics of arteriovenous and venous malformations using time-resolved magnetic resonance angiography (MRA) at 3.0 Tesla.

Methods: Time-resolved MRA with interleaved stochastic trajectories (TWIST) at 3.

Primary stent angioplasty of the inferior vena cava after liver transplantation and liver resection.

Purpose: This study evaluated technical efficacy and safety of stent angioplasty of the inferior vena cava (IVC) after liver transplantation or liver resection and analysis of changes in creatinine levels and patients' weight.

Methods: Between October 2004 and February 2011, 16 patients (mean age, 52.6 years) with symptomatic IVC stenoses after liver transplantation (n = 10) or liver resection (n = 6) were subjected to stent angioplasty.