Fig. 2
From: Microscopic features of small bowel mucosa of patients with Crohn’s disease
Obstructive granulomatous lymphangitis. a: Obstructive granulomatous lymphangitis with scattered macrophages in the lymphatics. HE 400×; b: Obstructive granulomatous lymphangitis with compacted macrophages in the lymphatics. HE 400×; c: A few epithelioid cells aggregated in the center of the villus. HE 400×; d: CD68 immunohistochemistry showing macrophages scattered in the lumina of the lymphatics (as shown by the red arrow). 400×; e: D2–40 immunohistochemistry outlined the very thin lymphatic vessels (as shown by the red arrow). 400×