Background and Objective:
Abdominal pain is a frequent reason for admission to the
Emergency Department. It may be a symptom of an underlying "organic" disease or a
"functional" manifestation without an underlying anatomic or physiologic alteration. The
evaluation of patients with abdominal pain is a challenge for the emergency physician and the
selection of patients for second-level radiological examinations or endoscopic procedures is not
always easy to perform. Faecal calprotectin could be a useful diagnostic marker to distinguish
between "organic" or "functional" form and its determination could be helpful to select patients
for further examinations in the context of an emergency setting.
Materials and Methods:
This is an observational and retrospective study on 146 patients with
abdominal pain and/or diarrhea (with or without rectal bleeding) admitted to the Emergency
Department of Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, who collected a
fecal sample to evaluate fecal calprotectin. We evaluated and correlated the level of fecal
calprotectin with the final diagnosis they received. Results: 50/146 patients (34,24%) received a
diagnosis of acute diverticulitis, in particular, 14/50 (28%) were complicated and 36/50 (72%)
were uncomplicated; 4/146 (2,7%) were cholangitis, 32/146 (21,9%) were colitis, 6/146 (4,1%)
gastritis, 42/146 (28,7%), Irritable bowel syndrome and 12/146 (8,2%) Inflammatory bowel
disease. For the differential diagnosis between Irriable or inflammatory bowel diseses, our study
showed a VPP and a VPN of 100% meanwhile for the differential diagnosis between Acute
complicated and uncomplicated diverticulitis, our study showed a VPP of 40% and a VPN of
84%.
Conclusion:
In the emergency setting, faecal calprotectin could be a helpful marker to select
patients with abdominal pain who need second-level radiological examinations or endoscopic
procedures, guiding the emergency physician in the evaluation of such a complex and wideranging symptom.