294
Participants
Start Date
December 31, 2013
Primary Completion Date
November 30, 2016
Study Completion Date
January 31, 2017
NBI endoscopy
GI endoscopy examination and additional the entire length of esophagus is evaluate with NBI endoscopy Biopsy at the visually abnormal lesions
Lugol chromoendoscopy
GI endoscopy examination and additional the entire length of esophagus is evaluate with Lugol chromoendoscopy Biopsy at the unstained lesions \>= 5 mm diameter Pathologic examination of all biopsy tissue specimens
Maria Sklodowska-curie Memorial Cancer Center, Institiute of Oncology, Warsaw
Centre of Postgraduate Medical Education
OTHER
Maria Sklodowska-Curie National Research Institute of Oncology
OTHER