Spec. Lita Year: 2013. : 220 s. Diseases of the esophagus , stomach and duodenum (DPC), commonly referred to as acid-dependent diseases, This is one of the most important problems of modern medicine,. This is due to the high prevalence of ,. significant impact on the quality of life and social functioning of a person . Diseases of the upper digestive system remain one of the difficult sections of internal diseases, despite the achievements of modern science and practice. Carrying out diagnostic, therapeutic, rehabilitation measures for these diseases is accompanied by significant costs, which determines both the medical and social aspect of the problem. The manual covers the issues of the clinic, diagnosis and treatment of major diseases of the esophagus, stomach and WPC, which are most often encountered in their practice by first-contact doctors (therapist and general practitioner) and a gastroenterologist .