Accordian sign is seen in
The 'Accordion sign' (also known as 'conceina sign') is seen on CT examinations of the abdomen Refers to the similarity between the thickened oedematous wall of Pseudomembranous colitis and the folds of an accordion. This appearance is the result of hyperaemic enhancing mucosa stretched over markedly thickened submucosal folds. Also seen when contrast is trapped between oedematous haustral folds and pseudomembranes formed on the luminal surface of the colon.
Pseudomembranous colitis
Intussusception
Ileocecal TB
Ischemic colitis
Gastrointestinal Radiology