What are the usual symptoms and signs suggestive of Crohn’s disease? The symptoms of Crohn’s disease are determined by the site and type of involvement, that is, inflammatory, stenotic, or fistulizing. The most common site of involvement is ileocolitis. These patients present with diarrhea; abdominal pain that is usually insidious in the right lower quadrant, [...]

What is the best screening test for fat malabsorption? Microscopic examination of stool using Sudan stain to detect fat is the best screening test for fat malabsorption. This test has a 100% sensitivity and 96% specificity. A stool sample is smeared on a microscope slide and mixed with ethanolic Sudan III and glacial acetic acid. [...]