Pancreatic neuroendocrine tumor: prediction of the tumor grade using magnetic resonance imaging findings and texture analysis with 3-T magnetic resonance.

Purpose: The purpose of this study was to evaluate the performance of magnetic resonance imaging (MRI) findings and texture parameters for prediction of the histopathologic grade of pancreatic neuroendocrine tumors (PNETs) with 3-T magnetic resonance.

Patients And Methods: PNETs are classified into Grade 1 (G1), Grade 2 (G2), and Grade 3 (G3) tumors based on the Ki-67 proliferation index and the mitotic activity. A total of 77 patients with pathologically confirmed PNETs met the inclusion criteria.

A small interfering RNA targeting vascular endothelial growth factor efficiently inhibits growth of VX2 cells and VX2 tumor model of hepatocellular carcinoma in rabbit by transarterial embolization-mediated siRNA delivery.

Introduction: Hepatocellular carcinoma is currently the second leading cause of cancer-related deaths worldwide with an increasing incidence.

Objective: The objective of this study is to investigate the effect of vascular endothelial growth factor small interfering RNA (VEGF-siRNA) on rabbit VX2 carcinoma cell viability in vitro and the effect of transarterial embolization (TAE)-mediated VEGF-siRNA delivery on the growth of rabbit VX2 liver-transplanted model in vivo.

Methods: Quantitative reverse transcription polymerase chain reaction, enzyme-linked immunosorbent assay, and Western blot technologies were used to detect the expression level of VEGF.

[Influence of As2O3-lipiodol emulsion via transarterial embolization on a VX2 liver tumor model in rabbits].

Objective: To investigate the anticancer efficacy and the hepatic and renal toxicity of As2O3-lipiodol emulsion via transarterial embolization in a rabbit VX2 liver tumor model.

Methods: VX2 tumors were implanted in rabbit livers successfully, followed by transarterial embolization with high-dose As2O3(5 mg/kg with 0.2 mL lipiodol, n=10), low-dose As2O3(1 mg/kg with 0.

[Diffusion weighted imaging combined with dynamic contrast enhanced magnetic resonance imaging in monitoring therapeutic efficacy for hepatocellular carcinoma after transcatheter arterial chemoembolization].

Objective: To evaluate the diagnostic value of diffusion weighted imaging (DWI) combined with dynamic contrast-enhanced (DCE) MRI in monitoring the efficacy for hepatocellular carcinoma (HCC) after transcatheter arterial chemoembolization (TACE).

Methods: MRI and CT scan were performed 4-6 weeks after TACE in 31 patients.With digital signature algorithm (DSA) examination as the reference standard, the value in detection of the residue and recurrence of HCC was compared between MRI and CT results.