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FDG-PET/CT and MR-DWI showed similar high accuracy for diagnosing peritoneal carcinomatosis. • In the supramesocolic area, MR-DWI could be more sensitive than PET/CT. • Both techniques showed lower sensitivity for subcentimetre lesions. • Interobserver agreement was very good for PET/CT and good for MR-DWI.

Liver macronodules, ranging from benign to low-grade or high-grade dysplastic nodules (LGDNs/HGDNs) and hepatocellular carcinoma (HCC), may develop during chronic liver diseases (CLDs). Current guidelines were recently updated and the noninvasive criteria for the diagnosis of small HCC are based on a single typical radiological pattern and nonconclusive coincidental findings with two techniques. This study aimed to assess the accuracy and disagreements of noninvasive multiphasic examinations for the diagnosis of HCC and dysplastic nodules (DNs) and the role of biopsy. Seventy-four consecutive patients with CLD with ultrasound-detected 1-2-cm nodules underwent, within 1 month, multiphasic computed tomography (CT), magnetic resonance imaging (MRI), and biopsy of the nodule. Median age was 60 years; 33 patients (45%) had hepatitis C virus, 20 (27%) had hepatitis B virus, and 13 (18%) patients had no cirrhosis. Biopsy revealed 47 HCCs, 6 HGDNs, 1 LGDNs, 1 cholangiocarcinoma, and 1 epithelioid hemangioendothelioma. There were no tumors in the other 18 patients. All patients (31 of 31; 100%) who had conclusive coincidental findings (i.e., arterial enhancement and washout) on both examinations had HCC or HGDN (sensitivity, 57%; specificity, 100%). All patients (51 of 51; 100%) who had conclusive findings on at least one of the two examinations had HCC or HGDN (sensitivity, 96%; specificity, 100%). There was a disagreement regarding imaging findings between CT and MRI in 21 of 74 (28%) patients and no washout on both examinations in 23 of 74 patients (31%). In these 44 patients, liver biopsy provided an initial accurate diagnosis. Conclusion : The noninvasive diagnosis of HCC or HGDN can be obtained if arterial enhancement and washout are found in a single dynamic imaging examination. These findings are frequently discordant on both CT and MRI, supporting the place of biopsy for the diagnosis of small HCCs.

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W175as "drain output of any measurable volume of fluid on or after postoperative day 3 with an amylase content greater than three times the serum amylase activity" [11].The overall rate of pancreatic fistula after pancreaticoduodenectomy ranges from 17% in patients in whom the pancreatic remnant has a hard consistency [12] and exocrine pancreatic function and pancreatic juice output are impaired [13] to 25% in cases in which the pancreas is soft [1], that is, the parenchyma is normal [13]. Soft pancreatic texture [1,3,13] and small pancreatic duct size [3] are the most important preoperative risk factors for the development of pancreatic fistula.The diagnosis of pancreatic fistula usually is made an average of 7 days after pancreaticoduodenectomy [5,14,15]. Pancreatic fistula diagnosed with repeated assays of pancreatic enzymes in peripancreatic fluid drainage [11,14,16] © American Roentgen Ray Society P ancreaticoduodenectomy is safe in the management of various malignant and benign diseases of the pancreatic head and periampullary region. Although the mortality rate has decreased to approximately 1-2% at high-volume centers, the morbidity rate ranges from 30% to 50% [1][2][3][4]. The two most frequent complications of pancreaticoduodenectomy are delayed gastric emptying and pancreatic fistula. G a s t r oi nt e s t i n a l I m ag i ng • O r ig i n a l R e s e a rc hPancreatic fistula after pancreaticoduodenectomy is a serious complication resulting in prolonged hospital stay, increased costs, readmission, and a mortality rate of 3-9% [5,6]. Efforts to reduce the incidence of pancreatic fistula have included definition of risk factors [1,7], improvement of surgical technique [8,9], and perioperative administration of somatostatin and its analogues [1,10]. The International Study Group on Pancreatic Fistula has defined pancreatic fistula OBJECTIVE. The purpose of this study was to evaluate the sensitivity and specificity of routine performance of CT on postoperative day 7 in patients at high risk of pancreatic fistula after pancreaticoduodenectomy.MATERIALS AND METHODS. Two radiologists analyzed images from CT examinations of 50 patients with soft pancreas 7 days after pancreaticoduodenectomy. Pancreatic fistula was defined at CT as a fluid collection close to the pancreaticogastric or pancreaticojejunal anastomosis. Clinicobiologic criteria for the diagnosis of pancreatic fistula were drain output of any measurable volume of fluid on or after postoperative day 3 that had an amylase content more than three times the serum amylase activity. The final diagnosis of pancreatic fistula was rendered on the basis of clinicobiologic data at hospital discharge or at first readmission.RESULTS. At hospital discharge or at first readmission, 27 of 50 patients (54%) had a pancreatic fistula. On postoperative day 7, 30 patients (60%) had a total of 51 fluid collections, and CT showed a fluid collection close to the pancreaticogastric or pancreaticojejunal anastomosis in 21 of 51 cases. CT had a sensitivity of 63% (17/27 pat...

Overall and disease-free survival following treatment with CCRS and HIPEC is similar in patients with pseudomyxoma peritonei of appendicular or extra-appendicular origin.

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Three-dimensional(3D) reconstructed CT angiography can detect the point of origin of the uterine artery. Therefore, it can be used as a mapping tool of the pelvic arterial tree. Our study corroborates data from the literature that the uterine artery most often originates from a common trunk with the umbilical artery. However, surgeons and intervention radiologists must be aware of the variability of its origin to facilitate the safety of the patients during procedures.