Hepatic portal venous gas due to cryptosporidiosis in a patient with acquired immunodeficiency syndrome

Figure 1 Cryptosporidium microorganisms shown by the biopsy. A: On the surface epithelium of the terminal ileum; B: On the surface epithelium of the duodenum (Periodic acid schiff stain).

Figure 2 Non-contrast axial computed tomography of the upper abdomen demonstrates multiple peripheral linear branching air density structures consistent with portal venous air.

Figure 3 Gallbladder showing Cryptosporidium located on the surface of the epithelium.