Search results for "Endoscopy"

NITROGLYCERINE DILATATION OF SPHINCTER OF ODDI FOR ENDOSCOPIC REMOVAL OF BILEDUCT STONES

1984

Magnetresonanztomographie bei chronischer Aortendissektion

1993

17 patients with chronic aortic dissection were examined by MRI. In 12 patients, comparison between gradient echo sequences and SE sequences was possible. Gradient echo sequences, unlike SE sequences, permitted evaluation of flow in the true and false lumen, reliable differentiation between thrombus and flowing blood and clear delineation of the intimal flap. An additional comparison between transoesophageal ultrasound and MRT in 15 patients showed significant advantages in favour of MRI. In three patients MRI was able to detect more proximal origins of the dissection. Moreover, MRI allowed evaluation of the major aortic branches and their relation to the dissection; this was not possible w…

Endo-neuro-sonography: Anatomical aspects of the basal cisterns

1997

SummaryTo evaluate the usefulness of transendoscopic sonography, two sono catheters of 6F diameter were studied in 15 fresh specimens. A precise imaging was seen of well known anatomical structures. An additional dimension in endoscopy was also obtained as the sono added to the endo view a transversal scan like a mini CT at the tip of the probe. The guiding characteristic of this imaging technique, which is in real time and on line, was also experienced. These observations offer such interesting prospects for use in minimally invasive neurosurgery that further development and clinical experience seem to be justified.

Two mesalazine regimens in the prevention of the post-operative recurrence of Crohn's disease: a pragmatic, double-blind, randomized controlled trial

2003

Summary Background : The role of mesalazine in preventing the clinical recurrence of Crohn's disease after surgery has been shown in a meta-analysis of all published studies. No clear relationship, however, has been shown between dosage and response. Aim : To evaluate whether 4.0 g/day of mesalazine may offer therapeutic advantages over 2.4 g/day in the prevention of both endoscopic and clinical post-operative recurrence of Crohn's disease. Methods : The study was a double-blind, randomized, multi-centre, prospective, controlled clinical trial. Two hundred and six patients, submitted to first or second intestinal resection for Crohn's disease limited to the terminal ileum, with or without i…

Confocal laser endoscopy: new approach to the early diagnosis of tumors of the esophagus and stomach

2006

The prognosis of malignancies of the upper gastrointestinal tract is poor if early diagnosis is missed. Therefore, a rapid in vivo diagnosis of early cancer and premalignant lesions is highly important for succesful therapy. Confocal laser endomicroscopy allows in vivo cellular and subcellular imaging at high resolutions during ongoing endoscopy. The first studies and clinical observations suggest a major role of this novel technique in the in vivo diagnosis of cancer of the esophagus and stomach and of precursor conditions, such as Barrett’s esophagus, intestinal metaplasia of the stomach and Helicobacter pylori infection. Based on recent experiences from animal models, future studies wil…

Follow-up of patients with colonic polyps containing severe atypia and invasive carcinoma. Compliance, recurrence, and survival

1988

Between January 1975 and December 1984 1769 polyps were endoscopically removed from 1219 patients. Eight percent of these patients had polyps containing severe atypia and 5.0% had polyps containing invasive cancer. A close postoperative surveillance program was followed by only a few patients, but compliance improved with longer follow-up intervals. Metachronous polyps were observed with similar frequency in patients with benign polyps (34.8%) and those with polyps containing severe atypia (23.8%) or cancer (41.7%). Patients in whom malignant polyps were endoscopically removed had a 5-year survival rate of 84.3% that did not differ from that of patients' whose polyps contained severe atypia…

Endoscopic ultrasonography in gastric lymphomas: appraisal on reliability in long-term follow-up

2011

The reliability of endoscopic ultrasonography (EUS) in follow-up management of gastric lymphomas has not been clearly validated. We conducted a retrospective analysis on 23 patients, 12 affected by mucosa-associated lymphoid tissue (MALT) lymphoma, eight by diffuse large B-cell lymphoma, and three by high-grade lymphoma with low-grade component, all treated with a stomach-conservative approach. One hundred and twenty matched evaluations with both EUS and endoscopy with biopsy (E-Bx) were performed, according to validated guidelines and clinical judgment. At a median follow-up of 87 months ranged between 9.5 and 166 months, the analysis of progression-free survival and disease-free survival …

Does endoscopic follow-up improve the outcome of patients with benign gastric ulcers and gastric cancer?

1992

This study investigated whether an endoscopic surveillance program for patients with "benign" gastric ulcers and gastric cancer leads to early detection of neoplasms and improves survival. The clinical course of all patients diagnosed between 1977 and 1986 as having either gastric ulcers or gastric cancer was followed for a minimum of 3 years. Of 597 patients with initially benign gastric ulcers, 452 (76%) returned for the recommended endoscopic follow-up examinations. In eight patients (1.8%), repeated biopsies disclosed malignant neoplasms; four of these patients (0.9%) had become asymptomatic. Survival curves were nearly identical in patients who complied and those who did not. Of 241 pa…

ERCP and MRCP--when and why.

2002

Since the introduction of endoscopic retrograde cholangiopancreatography (ERCP) in the 1970s, gastroenterologists have a wide spectrum of diagnostic and therapeutic options in the biliopancreatic ductal system at their disposal. With its arrival in the 1990s, magnetic resonance cholangiopancreatography (MRCP) developed as a potent diagnostic tool in biliopancreatic pathology. Currently, MRCP is widely replacing diagnostic ERCP and thereby avoiding complications related to endoscopic technique.We summarize evidence-based data and demonstrate indications and differential indications for MRCP and ERCP in pancreatic disease. Complications related to the procedures and possible medical preventio…

Influence of root width and dentin wall thickness evaluated by endoscopy upon the outcome of periapical surgery. A cohort study.

2020

Background: An analysis was made of the correlation between root width, the thickness of the remaining dentinal wall as determined by endoscopy, and the outcome of periapical surgery. Material and Methods: A retrospective cohort study was carried out involving patients subjected to periapical surgery between 2017 and 2019 at the University of Valencia (Valencia, Spain). One year after surgery, cone-beam computed tomography (CBCT) was used to evaluate healing against the preoperative volumes. The maximum root width was measured on the postoperative CBCT scan at the apical section of the treated root. This measurement was transferred to the intraoperative endoscopic image, where the minimum r…