Fig. 4
From: Inflammatory and infectious manifestations of immunodeficiency in the gastrointestinal tract

A right hemicolectomy from a neutropenic patient shows patchy necrosis and hemorrhage with extensive mucosal pneumatosis (arrow) a. The mucosa shows ischemic-type injury with “withered” crypts and hyalinized lamina propria. Bacterial colonies are present at the surface b (Hematoxylin and eosin; original magnification: × 40 a; × 400 b)