Model to differentiate intestinal TB from Crohn's disease

Clinical manifestations

Endoscopic findings

Pathological findings

granuloma characteristics

other findings

CT enterography findings

Interferon gamma release assay

How To Use This Model

Select a baseline prevalence for TB in patients with small bowel ulceration.
For example, 0.5 in Bangkok, Thailand, or 0.05 for Ann Arbor, USA.
Then use the dropdown menus at the left to enter the results of all tests.
The percent probability of TB will be displayed below.
You can also estimate the effect of future tests on the percent probability of TB, by entering the possible results of these tests, and determining how these results would affect the percent probability.
These calculations are based on Limsrivilai, J., Am J Gastroenterol. 2017 Mar; 112(3): 415-427.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5551982/

The percent probability for Intestinal Tuberculosis (%)