Fungal hepatic abscess formation postlaparoscopic cholecystectomy.

Laparoscopic cholecystectomy is the preferred method for treating acute cholecystitis. Although the incidence of postoperative infections in laparoscopic cholecystectomy is low, serious postoperative surgical site infections are still reported. Hepatic abscesses, particularly fungal, can occur post-cholecystectomy leading to significant mortality and morbidity.

Pancreatic schwannoma: a rare differential diagnosis for a pancreatic mass.

Pancreatic schwannomas are rare benign tumors with low malignant potential and are often difficult to diagnose due to their non-specific presenting symptoms and overlapping radiological imaging characteristics. Cross-sectional imaging plays an important role in the initial diagnosis and in delineating the extent of the lesion. However, biopsy and histopathological examination remains the gold-standard for a definite diagnosis.

Pancreatic endometrioma : a rare differential diagnosis for a pseudocyst.

Pancreatic endometriosis is extremely rare with only 14 cases reported in the medical literature and its diagnosis on radiological imaging poses a great challenge. We report a case of a 31-year-old female patient with recurrent admissions for pancreatitis of unknown aetiology and no relevant previous medical history. Sectional imaging showed a cystic lesion in the tail of the pancreas and the diagnosis of a post-pancreatitis pseudocyst or a less likely pre-malignant mucinous cystadenoma was considered.

The value of 18F-FDG PET/MRI in prediction of microvascular invasion in hepatocellular carcinoma.

Rationale And Objectives: Investigating the association between maximum standardized uptake value (SUV), peritumoral and intratumoral apparent diffusion coefficient (ADC) values and whether these parameters are useful in predicting the preoperative microvascular invasion (MVI) of hepatocellular carcinoma (HCC).

Materials And Methods: Forty-four patients [8 women and 36 men, median age of 62 (21-76)] with single HCCs (≥2 cm) who underwent preoperative 18F-FDG PET/MRI were retrospectively evaluated. The peritumoral and intratumoral ADC values were evaluated on diffusion-weighted images using Image J an open software and the intratumoral SUV values were measured on fusion 18F-FDG PET/MRI images.

Periampullary duodenal schwannoma mimicking ampullary neoplasm.

Schwannomas are neurogenic tumors that arise from Schwann cells in the neural sheath. Gastrointestinal schwannomas occur most often in the stomach, followed by the colon and the rectum. Duodenal schwannomas are rare amongst mesenchymal tumors of the gastrointestinal tract and only a few cases have been reported up to the current date with an incidence of approximately 2%-6%.

A case of peribiliary hepatic cysts in a cirrhotic liver: A mimicker of Klatskin Tumor.

Patients with end-stage liver disease may present to healthcare facilities with features of obstructive jaundice and a picture of hilar cholangiocarcinoma on radiological imaging. Careful observation and knowledge of the presence and higher prevalence of peribiliary hepatic cysts in a cirrhotic liver can aid in differentiating this benign entity from malignancy that may halt or delay the patients' eligibility for receiving a liver transplant. We present a case of a patient with liver cirrhosis initially diagnosed as Klatskin tumor on imaging then as a simple case of multiple peribiliary hepatic cysts with the patient eventually undergoing successful liver transplantation.

Intravoxel Incoherent Motion of Colon Cancer Liver Metastases for the Assessment of Response to Antiangiogenic Treatment: Results from a Pilot Study.

Objective: This study was aimed at evaluating the intravoxel incoherent motion (IVIM) parameter alterations of liver metastases of colorectal carcinoma (CRC) during antiangiogenic bevacizumab combination therapy.

Methods: Twenty-five patients with CRC liver metastases treated with bevacizumab in combination with FOLFOX-or-FOLFIRI protocols were enrolled in the study. MRI was performed using a 1.

Diagnostic performances of intravoxel incoherent motion and conventional diffusion-weighted imaging in the differential diagnosis of benign and malignant portal vein thrombus.

Purpose: To evaluate the diagnostic accuracy of intravoxel incoherent motion (IVIM) and diffusion-weighted imaging (DWI) parameters in the differential diagnosis of portal vein thrombus (PVT).

Methodology: Thirty-five patients with PVT were enrolled in this retrospective study. Precontrast axial in-phase and out-of-phase T1-weighted (W) turbo field echo (TFE), axial and coronal T2-W single-shot turbo spin echo, IVIM with b values between 0 and 1300 s/mm and conventional DWI with b factors of 50, 400, and 800 s/mm with single-shot echo-planar imaging, and postcontrast dynamic T1-W volumetric interpolated breath-hold examination images obtained with 1.

The efficacy and utilisation of preoperative multiparametric magnetic resonance imaging in robot-assisted radical prostatectomy: does it change the surgical dissection plan?

Objective: We investigated the effect of the use of multiparametric prostate magnetic resonance imaging (mp-MRI) on the dissection plan of the neurovascular bundle and the oncological results of our patients who underwent robot-assisted radical prostatectomy.

Material And Methods: We prospectively evaluated 60 consecutive patients, including 30 patients who had (Group 1), and 30 patients who had not (Group 2) mp-MRI before robot-assisted radical prostatectomy. Based on the findings of mp-MRI, the dissection plan was changed as intrafascial, interfascial, and extrafascial in the mp-MRI group.

Outcomes of first-line long-acting octreotide treatment in non-functional, advanced gastroenteropancreatic neuroendocrine tumors.

Purpose: Benefits of somatostatin analogues have been mostly studied in mixed samples of patients including both functional and non-functional neuroendocrine tumors. This study aimed to examine the response of patients with non-functional metastatic or inoperable gastroenteropancreatic neuroendocrine tumors (GEP-NETs) that received first-line treatment with the somatostatin analogue octreotide LAR.

Methods: The medical records of 23 patients with locally inoperable or metastatic non-functional neuroendocrine tumors who received octreotide LAR (long acting release) treatment were retrospectively reviewed for clinical data and disease course.

Primary renal angiosarcoma with progressive clinical course despite surgical and adjuvant treatment: A case report.

Angiosarcoma is an extremely rare, high-grade malignancy, which accounts for <2% of all soft-tissue sarcomas. Cases of primary renal angiosarcoma represent 1% of these. Angiosarcomas involving the kidney usually originate from metastatic skin lesions or primary visceral lesions and most often occur in the sixth and seventh decades of life.

Advanced imaging of chronic pancreatitis.

Chronic pancreatitis is characterized by continuing inflammation, destruction, and irreversible morphological changes in the pancreatic parenchyma and ductal anatomy. These changes lead to chronic pain and/or loss of function. Although these definitions are simple, the clinical diagnosis of chronic pancreatitis remains difficult to make, especially for early disease.

Magnetic resonance measurement of diffusion in the abdomen.

Diffusion-weighted (DW) magnetic resonance imaging is an emerging noninvasive technique increasing its spectrum of use in the abdomen. Diffusion-weighted imaging has been used as add-on to routine abdominal protocol because it may potentially substitute contrast-enhanced imaging in cases under risk of nephrogenic systemic fibrosis. The apparent diffusion coefficient (ADC) images calculated from DW images enable qualitative and quantitative evaluations of tissue water mobility and functional environment because of changes in intracellular, extracellular, and intravascular tissue compartments.

Review of magnetic resonance spectroscopy in the liver and the pancreas.

Proton magnetic resonance spectroscopy is a powerful tool for in vivo biochemical characterization of normal and abnormal tissues. The initial application in the abdomen was the measurement of fat concentration in the liver using chemical shift imaging. The success of chemical shift imaging in providing a semiquantitative measure of liver fat concentration led to the application of the more quantitative single-voxel volume-selective spectroscopy of the liver.

Magnetic resonance imaging in pancreas transplantation.

Magnetic resonance imaging (MRI) plays an important role in the evaluation of pancreas transplantation. Standard MRI, magnetic resonance angiography, and MR cholangiopancreatography can demonstrate the changes of the anatomy after transplantation. Vascular complications are assessed by MR angiography.

Diffusion-weighted magnetic resonance imaging of the pancreas.

Diffusion-weighted imaging (DWI) assesses the random motion of the water protons. The technique is more frequently used in body imaging, and recent investigations showed its use in pancreatic imaging. Diffusion-weighted imaging can be helpful as a complementary imaging method in the differentiation between mass-forming focal pancreatitis and pancreatic adenocarcinoma.

Magnetic resonance imaging of gallbladder and biliary system.

Gallbladder and biliary system pathologic component is a spectrum of benign and malignant conditions. Standard magnetic resonance imaging techniques when used together with magnetic resonance cholangiopancreatography (MRCP) can evaluate gallbladder and biliary system pathologic conditions. Inflammatory diseases are characterized by thickening and intense mucosal contrast enhancement of the affected bile ducts and or gallbladder wall.

Magnetic resonance imaging in pancreatitis.

Pancreatitis can occur in acute and chronic forms. Magnetic resonance imaging (MRI) plays an important role in the early diagnosis of both conditions and complications that may arise from acute or chronic inflammation of the gland. Standard MRI techniques including T1-weighted and T2-weighted fat-suppressed imaging sequences together with contrast-enhanced imaging can both aid in the diagnosis of acute pancreatitis and demonstrate complications as pseudocysts, hemorrhage, and necrosis.

Imaging of the pancreas with secretin enhancement.

Magnetic resonance cholangiopancreatography is a noninvasive imaging technique for evaluation of the pancreatic duct and the biliary tree. Secretin is a polypeptide hormone that has numerous physiological effects, including stimulation of the pancreatic secretion of bicarbonate-rich fluid and transient increase in the tone in the sphincter of Oddi. As a result, secretin administration usually results in distention of the pancreatic duct; therefore, visualization of the pancreatic ductal anatomy is often substantially improved.

Magnetic resonance imaging of adenocarcinoma of the pancreas.

Magnetic resonance imaging (MRI) is a valuable tool in the assessment of the full spectrum of pancreatic disease. A standard MR protocol including noncontrast T1-weighted fat-suppressed and dynamic gadolinium-enhanced gradient-echo imagings is sensitive for the evaluation of pancreatic cancer. Optimal use of MRI in the investigation of pancreatic cancer occurs in the following circumstances: (1) detection of small non-contour-deforming tumors, (2) evaluation of local extension and vascular encasement, (3) determination of the presence of lymph node and peritoneal metastases, and (4) determination and characterization of associated liver lesions and liver metastases.

MRI and MRCP findings of the pancreas in patients with diabetes mellitus: compared analysis with pancreatic exocrine function determined by fecal elastase 1.

Goals: To review magnetic resonance imaging and magnetic resonance cholangiopancreatography (MRCP) findings in patients with diabetes mellitus (DM), with pancreatic exocrine insufficiency, and with combined pancreatic exocrine insufficiency and DM.

Study: MRI/MRCP findings of 82 consecutive patients with DM (n=28), pancreatic exocrine insufficiency (n=25), and combination of both (n=29) were evaluated and compared with MRI/MRCP findings of 21 healthy volunteers with normal pancreatic exocrine function. Pancreatic exocrine function was determined by fecal elastase 1.

Normal pancreatic exocrine function does not exclude MRI/MRCP chronic pancreatitis findings.

Objective: Abnormal pancreatic function tests have been reported to precede the imaging findings of chronic pancreatitis. Magnetic resonance imaging (MRI) with magnetic resonance cholangiopancreatography (MRCP) is increasingly accepted as the primary imaging modality for the detection of structural changes of early mild chronic pancreatitis. The aim of this study was to evaluate MRI/MRCP findings in patients with symptoms consistent with chronic pancreatitis who have normal Secretin Endoscopic Pancreatic Function test.