Results of treatment of 17 patients aged from 27 to 82 years with acute inflammation of omental processes (OP) are analyzed. The majority of them were hospitalized on day 1-3 from the beginning of the disease. In 9 cases inflammation was in the right half of the colon, in 7 -- in sigmoid colon (which in 3 patients was located in the right iliac area). In right-sided location of inflammation clinical picture looks like acute appendicitis. In some patients mainly in left-sided location of the inflammation the disease looks like renal colic, perforation of colon or peritonitis. Acute pathology of OP was suspected only in one case. All the patients underwent surgery. In 8 of them necrosis was revealed, in 7 -- phlegmonous inflammation of one OP, in 2 -- inflammatory infiltration without destruction. Surgery comes to removing of affected OP, which was supplemented with appendectomy in 9 cases. There were no complications and lethal outcomes. Problems of diagnosis and surgical treatment of acute inflammation of OP are discussed.