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endoscopic biopsies
Preoperative endoscopic biopsies should be obtained to identify carcinoma, but, they have high false-negative rates and cannot be relied upon to rule out malignancy.
      
Histologic classification of dysplasia on endoscopic biopsies is the single most predictive biomarker for progression to cancer.
      
Yet there is little and contradictory information as to the diagnostic accuracy of endoscopic biopsies in tumors of the papilla.
      
Moreover, after endoscopic sphincterotomy data on the diagnostic impact of endoscopic biopsies from the papilla are scarce and, in most cases, retrospectively obtained.
      
Thus, the aim of the present prospective and histopathologically controlled study was to assess the diagnostic accuracy of endoscopic biopsies taken from tumors of the papilla before and after sphincterotomy.
      
Because they are localized in the submucosa small, superficial endoscopic biopsies may fail to confirm the diagnosis.
      
Repeated endoscopic biopsies did not reveal the histologic diagnosis, although endoscopic ultrasound invasion to the tunica muscularis could not be excluded.
      
Endoscopies and histopathologic analyses of endoscopic biopsies confirmed non-transmural ischemic proctosigmoiditis in all patients.
      
Multiple endoscopic biopsies from the larynx, trachea and paranasal sinuses as well as radiologic examination are of decising importance for diagnosis.
      
Endoscopic biopsies were taken from the oxyntic mucosa at the beginning and at the end of the treatment period.
      
Of the cases, 31 (17 DLBCL and 14 MALT lymphoma) represented small endoscopic biopsies.
      
Immunoreactive atrial natriuretic peptide (ANP) in endoscopic biopsies of the human gastrointestinal tract
      
PAF was not identified in mucosa from normal surgical resections or in endoscopic biopsies from either patients with ulcerative colitis or normal individuals.
      
Both C16:0 lyso-PAF and C18:0 lyso-PAF were found in mucosa from normal and ulcerative colitis surgical resections and in endoscopic biopsies from ulcerative colitis and normal tissue.
      
Addition of3H-PAF to endoscopic biopsies from either normal individuals or patients with ulcerative colitis resulted in hydrolysis to3H-lyso-PAF.
      
All patients are surviving without sign of recurrence and no cancer cells were detected by endoscopic biopsies.
      
Extent of inflammatory lesions in ulcerative colitis assessed by radiology, colonoscopy, and endoscopic biopsies
      
A recent increase in the number of Barrett's esophagis being diagnosed is probably directly related to a proportional increase in endoscopic biopsies of the esophagus and awareness of premalignant potential of Barrett's mucosa.
      
Radiographic features of the duodenal mucosa were analyzed in a series of 26 patients in whom the diagnosis of Brunner gland hyperplasis (BGH) had been established by endoscopic biopsies.
      
Histologic proof is rarely obtained by means of endoscopic biopsies.
      
 

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