Search results for "Lithiasis"

Outcomes of interventional sialendoscopy for obstructive salivary gland disorders: an Italian multicentre study

2016

Sebbene le tecniche scialoendoscopiche abbiano assunto un ruolo fondamentale nel trattamento delle patologie ostruttive dei dotti salivari, in letteratura sono riportati pochi studi multicentrici sull’argomento. Questo studio basato sull’esperienza di 9 centri italiani è stato con-dotto su 1152 pazienti (553 donne, età media di 50 anni) per un totale di 1342 procedure scialoendoscopiche, il 44,6% delle quali a carico della ghiandola parotide. Il 12% dei pazienti è stato sottoposto a più interventi. I calcoli salivari sono risultati essere la principale causa di ostruzione (55%), seguiti dalle stenosi e altre malformazioni duttali (16%), dai tappi mucosi (14,5%) e dalla scialodochite (4,7%).…

Obesity Triples the Radiation Dose of Stone Protocol Computerized Tomography

2013

Patients with recurrent nephrolithiasis are often evaluated and followed with computerized tomography. Obesity is a risk factor for nephrolithiasis. We evaluated the radiation dose of computerized tomography in obese and nonobese adults.We scanned a validated, anthropomorphic male phantom according to our institutional renal stone evaluation protocol. The obese model consisted of the phantom wrapped in 2 Custom Fat Layers (CIRS, Norfolk, Virginia), which have been verified to have the same radiographic tissue density as fat. High sensitivity metal oxide semiconductor field effect transistor dosimeters were placed at 20 organ locations in the phantoms to measure organ specific radiation dose…

Endoscopic papillary large balloon dilation in patients with large biliary stones and periampullary diverticula: Results of a multicentric series.

2018

Abstract Introduction Stone extraction represents the most frequent indication for endoscopic retrograde cholangiopancreatography (ERCP). Endoscopic papillary large balloon dilation (EPLBD) is a recent introduced approach consisting of an endoscopic papillary large balloon dilation following limited endoscopic sphyncterotomy (ES), which has been proven to be safe and effective for extraction of large common bile duct (CBD) stones. Peri-ampullary diverticula (PAD) are described in 10–20% of patients undergoing ERCP. Aim of our study is to evaluate efficacy and safety of EPLBD for the extraction of large biliary stones in patients with PAD. Methods The prospectively collected endoscopy databa…

Risk of gallstone disease in advanced chronic phase of fascioliasis: an experimental study in a rat model.

2003

In Wistar rats experimentally infected with Fasciola hepatica, the association between time of infection, number of flukes, rat weight, and serum lipid levels and the risk of developing pigment stones in the main bile duct was examined using data obtained at 100, 200, 300, 400, and 500 days postinfection. Gallstone presence increased with infection time. The relative risk of gallstone disease increased when the number of flukes per rat and rat weight increased. The presence of gallstones was associated with serum high-density lipoproteins and triglyceride levels. In a multivariate analysis, the association between gallstones and rat weight disappeared after adjustment for serum lipids. The …

Digital Tomosynthesis: A New Technique for Imaging Nephrolithiasis. Specific Organ Doses and Effective Doses Compared With Renal Stone Protocol Nonco…

2014

Objective To determine organ-specific doses (ODs) and effective dose (ED) for digital tomosynthesis (DT) and compare it with our institutional renal stone protocol noncontrast computed tomography (NCCT). Methods A validated anthropomorphic male phantom was placed supine on a digital GE Definium 8000 radiological scanner. Thermoluminescent dosimeters were placed in 256 locations and used to measure OD. A routine DT study was performed consisting of 2 scout images and 1 tomographic sweep in a 14.2-degree arc over the phantom. Software is used to recreate a series of coronal images from the sweep. ODs were determined as the sum of the doses for the study. Equivalent doses were calculated by mu…

Efficacy and safety of direct transnasal cholangioscopy with standard ultraslim endoscopes: results of a large cohort study.

2013

Background Direct cholangioscopy (DC) with ultraslim endoscopes and free-hand cannulation of the common bile duct (CBD) is a promising technique for evaluating and treating cholangiopathy. However, its safety and success rates are as yet unclear. Objective To evaluate the overall success rates and adverse events with the procedure. Design Single-center, prospective cohort study; 12 patients retrospectively enrolled. Setting Academic tertiary referral center. Patients A total of 100 DC procedures in 84 patients with biliary disease were evaluated prospectively. Interventions DC performed with the patient under conscious sedation. Main Outcome Measurements Overall success rates and adverse ev…

Risk factors for extrahepatic biliary tract carcinoma in men: medical conditions and lifestyle: results from a European multicentre case-control stud…

2007

OBJECTIVES: To identify risk factors of carcinoma of the extrahepatic biliary tract in men. METHODS: Newly diagnosed and histologically confirmed patients, 35-70 years old, were interviewed between 1995 and 1997 in Denmark, Sweden, France, Germany and Italy. Population controls were frequency-matched by age and region. Adjusted odds ratios and 95%-confidence intervals were estimated by logistic regression. RESULTS: The analysis included 153 patients and 1421 controls. The participation proportion was 71% for patients and 61% for controls. Gallstone disease was corroborated as a risk factor for extrahepatic biliary tract carcinoma in men (odds ratio 2.49; 95% confidence interval 1.32-4.70), …

Retrograde endoureterotomy as a treatment option for impacted calculus in the ureterointestinal junction

2021

Introduction: In patients with a history of radical cystectomy and with intestinal diversion, urolithiasis in the upper urinary tract is a frequent event. Material and methods: We describe for the first time a case of retrograde endoureterotomy used to treat a calculus proximal to the ureterointestinal junction. Results: This technique is of interest when antegrade access is not possible. In our example, after passing the guidewire percutaneously, and externalize it through the stoma, the left meatus was reached with a resectoscope inserted through the ileal duct. After the use of a balloon to prevent migration of the calculus, a retrograde endoureterotomy was performed with a Collins knife…

Prevalence of biliary lithiasis in a Sicilian population of chronic renal failure patients.

2003

BACKGROUND The aim of this study was to evaluate the prevalence of biliary lithiasis (BL) and associated risk factors in a population of undialysed patients with chronic renal failure (CRF), and to compare these with findings we had obtained previously in chronic haemodialysis (HD) patients and in subjects from the general population located in the same geographic region. METHODS A total of 118 CRF patients on conservative treatment were included in the study. In all subjects, we measured several clinical and humoral parameters potentially correlated with BL. Liver and biliary tract ultrasonography was performed with a 3.5 MHz linear probe after at least 12 h of fasting. RESULTS The prevale…

New concept of the pathogenesis of urinary lithiasis.

1948