"While the Van Assche index focuses on assessing perianal Crohn's disease, other indices, such as the Magnetic Resonance Index of Activity (MaRIA), can also be used for a more global evaluation of the bowel."
"van Assche index"
"Modified van Assche index"
"extra- or inter-sphincteric (1)"
"The total score ranges between 0-22 for the original index with the higher the score, the more severe the disease activity 4."
"The total score thus ranges between 0-19."
Expected headings
"Classification"
"van Assche index"
"Modified van Assche index"
"thickened; >3 mm if distended 3 (2)"
"thickened; >3 mm if distended 3 (1)"
"collection - small; 3-10 mm (3)"
"collection - large; >20 mm (5)"
"While both indices were designed primarily to allow quantitative radiological evaluation of perianal fistulising Crohn disease and its response to therapy, a recent study did not show a clear difference between the original and modified index. A important caveat is that about one-third of clinical responders will not demonstrate a drop in the score, suggesting that further modifications of the system are potentially warranted 2."
"History and etymology"