Table 1.

Differential diagnosis of diarrhea in SOT patients

Infectious
Viral	Cytomegalovirus, rotavirus, norovirus, herpesviruses, adenovirus
Bacterial	Escherichia coli (shiga toxin–producing strains), Salmonella, Shigella, Clostridium difficile, Yersinia, Campylobacter, Vibrio
Parasite	Cryptosporidia, Isospora, Cyclospora, Giardia
Fungal	Microsporidia
Noninfectious
Medications	Antibiotics, azathioprine, mycophenolate mofetil, sirolimus, tacrolimus
Other	Idiopathic enteritis or colitis, inflammatory bowel disease, posttransplant lymphoproliferative disease, graft-vs-host disease