Cross-Sectional Imaging of Nontraumatic Peritoneal and Mesenteric Emergencies Michael N. Patlas, MD, FRCPC, Abdullah Alabousi, MD, Mariano Scaglione,

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Cross-Sectional Imaging of Nontraumatic Peritoneal and Mesenteric Emergencies Michael N. Patlas, MD, FRCPC, Abdullah Alabousi, MD, Mariano Scaglione, MD, Luigia Romano, MD, Jorge A. Soto, MD Canadian Association of Radiologists Journal Volume 64, Issue 2, Pages 148-153 (May 2013) DOI: 10.1016/j.carj.2013.02.001 Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 1 (A) Longitudinal sonogram, showing omental cake (arrow) in a patient with ascites; the finding was overlooked during the initial interpretation. (B) Axial contrast-enhanced computed tomography, demonstrating extensive omental involvement (arrows) in the same patient. Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 2 Axial contrast-enhanced computed tomography image in a patient who presented to the emergency department with abdominal pain, demonstrating a large omental mass at the right upper quadrant. Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 3 (A) Unenhanced axial computed tomography (CT), demonstrating spontaneous splenic rupture complicated by hemoperitoneum (arrows). (B) Axial contrast-enhanced CT obtained in the portal venous phase, showing active extravasation of intravascular contrast from the spleen (short arrows) and hemoperitoneum (long arrows). Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 4 Arterial phase of axial computed tomography, showing ruptured splenic pseudoaneurysm. Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 5 Coronal reformation of contrast-enhanced computed tomography image, demonstrating thickened and enhancing peritoneum (arrow) in a patient with peritonitis. Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 6 Sagittal reformation of contrast-enhanced axial computed tomography, showing a large mixed fatty and soft tissue attenuation mass (arrows, arrowheads) located anterior to ascending colon in keeping with omental infarction. Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 7 (A) Axial contrast-enhanced computed tomography (CT) image, depicting fatty mass (arrows) at the left mid abdomen, representing omental infarction. (B) Follow-up CT performed 1 month later, showing marked improvement of infarction (arrows). Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 8 Axial contrast-enhanced computed tomography image, demonstrating multiple enlarged mesenteric lymph nodes at the right lower quadrant (arrows) in a patient with mesenteric adenitis. Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions

Figure 9 Axial contrast-enhanced computed tomography image obtained at the portal venous phase, depicting fatty mesenteric mass surrounded by a thin pseudocapsule (arrows). Canadian Association of Radiologists Journal 2013 64, 148-153DOI: (10.1016/j.carj.2013.02.001) Copyright © 2013 Canadian Association of Radiologists Terms and Conditions