<prompt> Coffee bean sign is seen in?Gastric volvulusSigmoid volvulusHypertrophic pyloric stenosisMidgut volvulus  <response>: ANSWER: B Sigmoid volvulusREF: Wofganag 5th e p. 846748SignDiseaseRat tail appearanceCarcinoma esophagusBird beak appearanceAchalasiaBeak signdouble track tram trackHypertrophic pyloric stenosisMedusa head colonies on CTRound wormPincerdawcoiled springtargetmeniscus signIntussceptionCoffee bean signSigmoid volvulousLead pipe appearanceUlcerative colitisString of kantorbulls eyeChrons diseaseThumb printing signIschemic colitisSaw tooth appeance on barium enemaDiverticulosisApple core signCarcinoma colonCork screw appearanceDiffuse esophageal spasmString signHypertrophic pyloric stenosis 