caa a22 4500 605495289 CHVBK 20210128100530.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s00261-015-0365-4 doi (NATIONALLICENCE)springer-10.1007/s00261-015-0365-4 Gastrointestinal hemorrhage: evaluation with MDCT [Elektronische Daten] [Jorge Soto, Seong Park, Joel Fletcher, Jeff Fidler] Gastrointestinal (GI) bleeding is a common medical problem, with high associated morbidity and mortality. The clinical presentation of gastrointestinal hemorrhage varies with the location of the bleeding source, the intensity of the bleed, and the presence of comorbidities that affect the ability to tolerate blood loss. Conventional endoscopic examinations are usually the initial diagnostic tests in patients presenting with overt gastrointestinal hemorrhage. However, implementation of upper tract endoscopy and colonoscopy in the emergency setting can be challenging due to inconsistent availability of the service and difficulties in achieving adequate colonic cleansing in emergent situations. Thus, imaging tests are often relied upon to establish the location and the cause of bleeding, either for initial diagnosis or after non-revealing upper and lower tract endoscopies ("obscure” bleeding). This article discusses the imaging evaluation of patients with gastrointestinal bleeding and reviews the imaging appearance of the most common causes, taking into account the two most relevant clinical presentations: overt bleeding and obscure bleeding. Springer Science+Business Media New York, 2015 Gastrointestinal hemorrhage nationallicence CT enterography nationallicence CT angiography nationallicence Overt bleeding nationallicence Obscure bleeding nationallicence Soto Jorge Boston University and Boston Medical Center, 820 Harrison Avenue, FGH3, 02118, Boston, MA, USA aut Park Seong Department of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, 138-736, Seoul, South Korea aut Fletcher Joel Department of Radiology, Mayo Clinic, 200 First St. SW, 55905, Rochester, MN, USA aut Fidler Jeff Department of Radiology, Mayo Clinic, 200 First St. SW, 55905, Rochester, MN, USA aut Abdominal Imaging Springer US; http://www.springer-ny.com 40/5(2015-06-01), 993-1009 0942-8925 40:5<993 2015 40 261 https://doi.org/10.1007/s00261-015-0365-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 review-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00261-015-0365-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Soto Jorge Boston University and Boston Medical Center, 820 Harrison Avenue, FGH3, 02118, Boston, MA, USA aut NATIONALLICENCE 700 1- Park Seong Department of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, 138-736, Seoul, South Korea aut NATIONALLICENCE 700 1- Fletcher Joel Department of Radiology, Mayo Clinic, 200 First St. SW, 55905, Rochester, MN, USA aut NATIONALLICENCE 700 1- Fidler Jeff Department of Radiology, Mayo Clinic, 200 First St. SW, 55905, Rochester, MN, USA aut NATIONALLICENCE 773 0- Abdominal Imaging Springer US; http://www.springer-ny.com 40/5(2015-06-01), 993-1009 0942-8925 40:5<993 2015 40 261