Search results for "papilla"
showing 10 items of 210 documents
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…
Percutaneous antegrade electropapillotomy. Study in dogs.
1984
Antegrade electropapillotomy using the percutaneous transcystic approach was successfully performed in 11 of 16 dogs. When the intervention was effective, the pressure gradient between common bile duct and duodenum decreased from 6 to 1.3 mm Hg on average and returned to gradients slightly below the initial values after 4 weeks, owing to reactivation of the sphincter mechanism. Ineffective cutting, however, resulted in a temporary pressure rise. In one dog a papillary stenosis developed and was relieved by antegrade electrocutting. Irrespective of the success of the papillotomy, rises in levels of serum glutamine oxaloacetic and pyruvic transaminase, alkaline phosphatase, serum amylase and …
Management of pre-malignant and malignant lesions by endoscopic resection
2003
Endoscopic resection (ER) has gained more and more importance in the treatment of early gastrointestinal neoplasia over the last few years. The choice of the different available techniques depends on the site, the macroscopic type of the tumour and the personal experience of the endoscopist. The 'suck-and-cut' technique with ligation device or cap should be favoured to normal strip biopsy in the oesophagus because of the size of the resected specimen and its technical feasibility. A recently described method of ER in the stomach is the circumferential mucosal incision with a type of needle-knife and subsequent en-bloc resection following prior injection under the lesions. ER of high-grade i…
How to Name Papillary Tumors of the Bladder in Children: Transitional Cell Carcinoma or Papillary Urothelial Neoplasm of Low Malignant Potential?
2015
Urinary bladder malignancies are uncommon in children. Approximately 80 children with papillary carcinoma have been described to date, presenting as papillary neoplasms of both low grade and low stage. On the basis of the 1973 World Health Organization classification, tumors were classified as transitional cell carcinoma of the urinary bladder (TCCB). Owing to more detailed histologic criteria, this term has been replaced by papillary urothelial neoplasm of low malignant potential and low-grade carcinoma of the urinary bladder in the World Health Organization-International Society of Urologic Pathology consensus classification system of urothelial neoplasms 2004. Nevertheless, TCCB still re…
A strange pneumonia
2013
We report the case of a 62-year-old man with non-ST elevation myocardial infarction complicated by partial rupture of the antero-lateral papillary muscle in which severe mitral regurgitation with lateralized direction towards the right pulmonary veins gave unilateral pulmonary oedema, resembling an acute pneumonia.Unilateral pulmonary oedema is a rare entity, more frequently appearing as opacity of the right lung and always associated with severe mitral regurgitation. It is very important to suspect and promptly recognize unilateral pulmonary oedema because initial misdiagnosis leads to a delay in the initiation of appropriate treatment and to an increased risk of mortality.
High frequency of colorectal adenoma in patients with duodenal adenoma but without familial adenomatous polyposis
2004
Abstract Background Duodenal adenomas are extremely common in patients with familial adenomatous polyposis. However, it is uncertain whether patients with duodenal adenomas without familial adenomatous polyposis are at greater risk for colorectal neoplasia and, therefore, should routinely undergo surveillance colonoscopy. The aim of this study was to determine whether there is a correlation between non-papillary duodenal adenoma without familial adenomatous polyposis and colorectal adenoma. Methods Twenty-five patients with non-papillary duodenal adenomas without familial adenomatous polyposis, seen from January 1990 to April 2003, were retrospectively evaluated. Results Non-papillary duode…
Image-Guided Thermal Ablation as an Alternative to Surgery for Papillary Thyroid Microcarcinoma: Preliminary Results of an Italian Experience
2021
PurposeTo report the results of our preliminary experience in treating patients with papillary thyroid microcarcinoma (PTMC) with image-guided thermal ablation, in particular estimating the feasibility, safety and short-term efficacyMaterials and MethodsFrom 2018 patients with cytologically proven PTMC < 10 mm were discussed in a multidisciplinary team and evaluated for feasibility of image-guided thermal ablation. In case of technical feasibility, the three possible alternatives (i.e., image-guided thermal ablation, surgery, and active surveillance) were discussed with patients. Patients who agreed to be treated with image guided thermal ablation underwent radiofrequency (RFA) or la…
Prognostic factors in a large multi-institutional series of papillary renal cell carcinoma.
2011
OBJECTIVES To investigate cancer-related outcomes and prognostic factors of papillary renal cell carcinoma (pRCC) in a large multicentre data set. Oncological outcome and prognostic factors of pRCC have been limitedly evaluated in comparison with the most common RCC subtype, clear cell RCC. PATIENTS AND METHODS From a multicentre retrospective database, including 5463 patients who were surgically treated for RCC at 16 Italian academic centres between 1995 and 2007, 577 patients with pRCC were identified. Univariable and multivariable Cox regression models were performed to identify prognostic factors predictive of recurrence-free survival (RFS) and cancer-specific survival (CSS) after surge…
COMPARATIVE STUDY ON THE ELECTROPHYSIOLOGICAL EFFECTS OF MONENSIN ON ATRIAL AND VENTRICULAR MUSCLE PREPARATIONS OF GUINEA-PIG HEART
1995
The effects of monensin (10 µmol/L) alone and in presence of verapamil (3 µmol/L) or ouabuin (1 µmol/L) or glibenclamide (10 µmol/L) or BaCl2 separately were studied on the electrophysiological properties represented by force of contraction, duration of action potential, and membrane resting potential of isolated atrial and ventricular muscle of guinea –pig heart. Monensin induced a transient increase in the force of contraction of atrial and ventricular muscles. It caused a decrease in action potential duration of papillary muscle, this effect was reversed by glibenclamide. Monensin increased the action potential duration of atrial muscle in absence or presence of glibenclamide. In presenc…
PD-L1 and PD-1 expression in thyroid follicular epithelial dysplasia : Hashimoto thyroiditis related atypia and potential papillary carcinoma precurs…
2022
Programmed cell death ligand (PD-L1)/PD-1 expression has been studied in a variety of cancers and blockage of PD-L1/PD-1 pathway is a cornerstone of immunotherapy. We studied PD-L1/PD-1 immunohistochemical expression in 47 thyroid gland specimens in groups of (1) Hashimoto thyroiditis (HT) only; (2) HT and follicular epithelial dysplasia (FED); and (3) HT, FED, and papillary thyroid carcinoma (PTC). PD-1 positivity was found in immune cells, namely in lymphocytes, macrophages, and plasma cells with mean values for lymphocytes and macrophages 9% in HT group, 4% in FED group, and 4% in PTC group. PD-L1 positivity was identified in both immune cells and in the normal epithelial cells. In the H…