Friday, December 21, 2007

Jejunum

Regarding jejunum,

1. Jejunal valvulae conniventes are more numerous than ileal ones
2. Jejunal valvulae conniventes are 1 mm thick
3. Jejunal valvulae conniventes are characteristically spiral shaped
4. Low density barium is widely used as oral contrast for the CT evaluation of the jejunum in the UK
5. Jejunum accounts for 40% of small bowel

Answers: T, F, F, F, T

Notes: Jejunal valvulae conniventes are more numerous than ileal ones, measure 2mm in thickness and are circular in appearance. Ileal ones measure 1 mm and are spiral in appearance. Water is commonly used as oral contrast in the UK.

Reference:
Hyland R et al. CT features of jejunal pathology.Clinical Radiology Volume 62, Issue 12, December 2007, Pages 1154-1162