Duodenum versus Jejunum vs ileum vs Colon NEETPG HY Topic

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  • The first part of the duodenum is visible as a triangular shadow on barium studies and is k/a duodenal cap.
  • The small intestine contains mucosal folds known as plicae circulares or valvulae conniventes that are visible on barium studies and help in the distinction between small intestine and colon.
  • Colon instead can be identified by presence of haustrations.
  • Valvulae conniventes are more prominent in the jejunum giving the ‘feathery appearance’ on barium.
  • These mucosal folds are gradually reduced distally giving a ‘featureless’ appearance of distal ileum.

 

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