Gastric bubble
Bulla gastrica
Definition
The gastric bubble is a collection of swallowed air that normally accumulates in the fundus of the stomach. Because the fundus is the highest part of the stomach in the upright position, gas rises and collects there, forming a visible airfilled radiolucent area on chest or abdominal radiographs. It is typically seen beneath the left hemidiaphragm and is considered a normal radiological finding.
References
Watanabe T, Urita Y, Maeda T, Sasaki Y, Hike K, Sanaka M, Nakajima H, Sugimoto M. Form of gastric air bubble is associated with gastroesophageal reflux symptoms. Hepatogastroenterology. 2009 SepOct;56(9495):156670.
