Portal venous gas caused by barium swallow examination: an
extremely rare clinical finding
Takuya Wakabayashi1, Kentaro
Tominaga1*, Akira Sakamaki1, Shuji
Terai1
1Division of Gastroenterology and Hepatology, Graduate
School of Medical and Dental Sciences, Niigata University, 1-757,
Aasahimachi-Dori, Chuo-Ku, Niigata, Japan