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    [A case of necrotizing colitis presenting with hepatic portal venous gas and pneumatosis intestinalis]. Song Jong Gyu,Koo Ja Seol,Kang Hyo Sung,Park Jin Yong,Kim Seoung Young,Hyun Jong Jin,Jung Sung Woo,Lee Sang Woo The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi Hepatic portal venous gas is a very rare radiologic sign which is characterized by gas accumulation in the portal venous circulation. Pneumatosis intestinalis is also very rare and is characterized by multiple air cysts in the serosal or submucosal layers of the gastrointestinal tract walls. These two findings are caused by various pathological conditions and can develop individually or simultaneously. The latter is clinically more significant because it is frequently related to bowel ischemia or necrosis, and represents a poor prognosis. However, prognosis is more influenced by the severity of underlying disease rather than hepatic portal venous gas or pneumatosis intestinalis itself. If bowel ischemia or necrosis is the primary cause, emergency operation is very important to improve patient's prognosis. Herein, we report a case of necrotizing colitis presenting as hepatic portal venous gas and pneumatosis intestinalis which was successfully managed by early surgery. 10.4166/kjg.2015.65.3.177