User's Manual

Reviewing and Interpreting RAPID Videos
Lewis Score 157
• Length of segment for Longitudinal extent
• Correct Distribution
4. Under Ulcers, select the:
• Appropriate Number
• Length of segment for Longitudinal extent
• Correct range for
Circumferential extent
5. Select the next tertile and repeat.
6. Under Stenosis, select:
• The appropriate Number
• Yes or No for Ulcerations
• Yes or No for Traversed
The Lewis Score at the top of the screen updates automatically.
Lewis Score Glossary:
Term Meaning
Appearance (of villi) Edema where width of villi is equal or greater than height
of villi. Evaluated villi in mucosa distinct and separated
from an ulcer rather than contiguous to a mucosal break.
Circumferential Extent Portion of the entire image involved by the lesion, based
on the entire lesion including its collar. This value is
entered for the largest ulcer in the tertile.
Few (ulcers) 2–7 lesions.
Lewis Score A capsule endoscopy scoring index for small intestinal
mucosal disease activity (Aliment Pharmacol Ther 27,
146-154).
Long segment Equal to 11–50% of a tertile.
Multiple (ulcers) 8 or more lesions.
Short segment Less than or equal to 10% of a tertile.
Tertile One third of small bowel as calculated by the transit time
of the PillCam capsule in the small bowel.
• 1st SB Tertile is the proximal third of the small bowel.
• 2nd SB Tertile is the middle third of the small bowel.
• 3rd SB Tertile is the distal third of the small bowel.
Whole segment Greater than 50% of a tertile.
Ulceration Mucosal break with white or yellow base surrounded by a
red or pink collar.