Trivedi et al reported the Paddington International Virtual Chromoendoscopy Score for patients with ulcerative colitis. The training module contains photographs of the mucosal and vascular appearances. The authors are from multiple institutions in Europe and Canada.
Patient selection: ulerative colitis
Components:
(1) mucosal architecture
(2) vascular architecture
Mucosal Status
Descriptor
Score
no mucosal defect
regular crypt architecture
0.A
crypts not visible (scar)
0.B
disconinuous and/or dilated/elongated crypts
0.C
microerosions or crypt abscesses
discrete
I.1
patchy
I.2
diffuse
I.3
erosions (< 5 mm)
discrete
II.1
patchy
II.2
diffuse
II.3
ulcerations (>= 5 mm)
diffuse
III.1
patchy
III.2
diffuse
III.3
Vascular Status
Descriptor
Score
vessels not dilated
roundish, following crypt architecture
0.A
vessels not visible (scar)
0.B
sparse (deep) vessels without dilatation
0.C
vessels with dilatation
with round, dilated vessels
I.A
with crowded or tortuous superficial vessels that are dilated
I.B
intramucosal bleeding
with round, dilated vessels
II.A
with crowded or tortuous superficial vessels that are dilated
II.B
intraluminal bleeding
with round, dilated vessels
III.A
with crowded or tortuous superficial vessels that are dilated
III.B
An abbreviated version just uses the mucosal and vascular status without desriptors. This will be used in the implementation.
Score III findings tend to indicate moderate-to-severe or severe disease.
Score 0 findings are seen during remission.
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