Table 3.

Presumptive diagnoses and abdominal imaging results for missed NoV patients presenting at the emergency room with community-acquired NoV infection^a

Presumptive diagnosis	Abdominal imaging performed	Diagnosis confirmedb	NoV relevantc
Cholecystitis		+	−
Subacute bacterial peritonitis	Sigmoidoscopy + echo	+	+
AIDS-related pneumonia		−	+
Inflammatory bowel disease	Echo + colonoscopyd	−	+
C. difficile infection, exacerbation, CU	X ray + sigmoidoscopy	−	+
Protein-losing diarrhea	X ray + scoping (twice) + CT	−	+
Addison crisis		−	+
Food poisoning	X ray	−	+
Renal dysfunction (n = 3)		−	+
Thymoma, Giardia infection, CMV	Endoscopy + CT	−	+
Graft vs host disease		−	+
Celiac disease, CU, Crohn's disease	Echo	−	+
Diverticulitis	Sigmoidoscopy	−	+
AIDS-presenting symptom		−	+
Ileus	X ray	−	+
Tropical infection (n = 2)		−	+
Bacterial infection (n = 10)		−	+

^aTwenty-eight NoV patients presented at the emergency room with community-acquired NoV infection. CU, colitis ulcerosa; GE, gastroenteritis; CT, computed tomography; CMV, cytomegalovirus; echo, abdominal echogram.

^b+, the presumptive diagnosis was confirmed.

^c+, NoV infection retrospectively explained the clinical symptoms.

^dRoutinely tested.