OBJECTIVE. The objective of our study was to evaluate the usefulness of high-b value diffusion-weighted MRI (DWI) in the detection of pancreatic adenocarcinoma.SUBJECTS AND METHODS. Twenty-six patients with pancreatic adenocarcinoma were included in the study. Twenty-three other patients who were being followed up due to pancreatic diseases other than adenocarcinoma were included as control subjects. All patients and subjects underwent DWI, and the images were evaluated by three blinded radiologists.RESULTS. Receiver operating characteristic (ROC) curve analysis yielded Az values (i.e., area under the ROC curve) of 0.998, 0.998, and 0.995 for the three radiologists. The mean sensitivity and specificity for the detection of pancreatic adenocarcinoma were 96.2% and 98.6%, respectively. The kappa values indicating interobserver agreement between different pairs of radiologists were in the category of excellent.CONCLUSION. High-b value DWI allows the detection of pancreatic adenocarcinoma with a high sensitiv...

OBJECTIVE. The purpose of this article is to evaluate the usefulness of high-b-value diffusion-weighted MRI (DW-MRI) in the detection of colorectal adenocarcinoma.CONCLUSION. High-b-value DW-MRI allows detection of colorectal adenocarcinoma with a high sensitivity and specificity.

OBJECTIVE. The purpose of this study was to report on clinical experience with and observations made during primary CT-guided percutaneous catheter drainage of acute necrotizing pancreatitis and to compare results among patients with sterile and those with infected necrosis.MATERIALS AND METHODS. We reviewed clinical, radiologic, and bacteriologic data on 35 patients (23 men, 12 women; mean age, 50 years; range, 21-83 years) with acute necrotizing pancreatitis refractory to standard medical care who underwent CT-guided percutaneous catheter drainage with 12- to 22-French catheters. Experiences with two subgroups were compared. One group consisted of 22 patients, 10 with multisystem organ failure, who presented with sterile necrosis (median Atlanta score, 1.3; range, 0-3). The other group consisted of 13 patients, one with multisystem organ failure, who presented with infected necrosis (median Atlanta score, 0.4; range, 0-3). Differences between the group with sterile and the group with infected necrosis w...