Plain X - Ray Abdomen in Gall Bladder Diseases

An easy was to remember findings is - 
1. Gas 
2. Opacity 
3. Gas in Opacity 

1. Gas - 
- Outside Gall Bladder (Perforation of Gall Bladder) 
- In Wall of Gall Bladder (Emphysematous Cholecystitis) 
- Within Gallbladder lumen (also Known as Pneumobilia) 
(seen in Cholecystenteric fistula, Post ERCP) 

2. Opacity - 
- Outside Gall Bladder (Gallstone ileus) 
- In Wall of Gall bladder (Calcified Gallbladder) 
- In lumen (Limey bile, Gall Stones, Calcification in Tumor) 

3. Gas in Opacity - Mercedez Benz Sign / Seagull's Sign