Figure 6. Histologic findings in ulcerative jejunitis.

Extensive ulceration (left) and villous atrophy (upper right) in the jejunum of a patient with refractory CD compatible with ulcerative jejunitis (Figure 6a, hematoxylin and eosin, 10x original magnification), most intraepithelial lymphocytes in the atrophic mucosa adjacent to ulceration express CD3 (Figure 6b) but not CD8 (Figure 6c). Brown color denotes positive immunostaining (20x original magnification). (Courtesy of Dr. Tsung-Teh Wu, Anatomic Pathology, Mayo Clinic, United States)