Diffusion-weighted imaging versus contrast-enhanced MR imaging for the differentiation of renal oncocytomas and chromophobe renal cell carcinomas.

Objectives: To compare the performance of diffusion-weighted imaging (DWI) with that of contrast-enhanced MRI in differentiating renal oncocytomas from chromophobe renal cell carcinomas (RCCs).

Methods: We recruited 48 patients with histopathologically confirmed renal oncocytomas (n=16) and chromophobe RCCs (n=32). All patients underwent preoperative DWI and contrast-enhanced MRI.

Preoperative Diagnosis of Juxtaglomerular Cell Tumors in Eight Patients.

The aim of this study was to improve the diagnostic efficiency for juxtaglomerular cell tumors (JCTs) and to determine whether clinical and magnetic resonance imaging features can help to differentiate JCTs from clear cell renal cell carcinoma (ccRCC). The clinical features of eight patients with JCTs and 27 patients with ccRCCs were analyzed. A flow diagram for young people with hypertension was applied to facilitate the diagnosis.

Magnetic Resonance Imaging Features of a Juxtaglomerular Cell Tumor.

Objective: To retrospectively determine whether magnetic resonance imaging (MRI) findings can help differentiate a juxtaglomerular cell tumor (JCT) from clear cell renal cell carcinoma (ccRCC).

Materials And Methods: Eight patients with JCTs and 24 patients with pathologically proven ccRCC were included for image analysis. All patients underwent unenhanced MRI and dynamic contrast-enhanced MRI.

[Mutations of fragile histidine triad gene in Peutz-Jeghers syndrome and canceration].

Background & Objective: Peutz-Jeghers syndrome (PJS) is an autosomal dominantly inherited disease. Fragile histidine triad (FHIT) gene is an important tumor suppressor gene at the fragile sites region of 3p14. The authors' previous study suggested that PJS patients might have a susceptible gene at the region of 3p14.