Figure 1From: Is it Crohn's disease? A severe systemic granulomatous reaction to sulfasalazine in patient with rheumatoid arthritis A: Medium-power photomicrograph of the colon showing a small epithelioid granuloma (arrow) (Hematoxylin and eosin stain. B: Low-power photomicrograph of bone marrow showing a hypercellular marrow with an epithelioid granuloma (arrow) (Hematoxylin and eosin stain).Back to article page