Massive Asymptomatic Extrahepatic Portal Vein Aneurysm Palashkumar Jaiswal, MBBS, John Erikson Yap, MD, Bashar M. Attar, MD, PhD, Yuchen Wang, MD, Kalpit Devani, MD, Radhika Jaiswal, MBBS, Anupam Basu, MD, MBA, Satya Mishra, MD  The American Journal of Medicine  Volume 130, Issue 9, Pages e383-e386 (September 2017) DOI: 10.1016/j.amjmed.2017.04.002 Copyright © 2017 Elsevier Inc. Terms and Conditions

Figure 1 Computed tomography scan of the abdomen showing a saccular structure (as highlighted) at the confluence of the superior mesenteric vein and the splenic vein posterior to the pancreatic neck, measuring 36.5 mm × 53.7 mm × 52.1 mm. The mass enhances during the portal venous phase on contrast-enhanced computed tomography and is contiguous with the portal venous system. No compression of surrounding viscera appreciated. (A) Coronal section; (B) transverse section; (C and D) 3-dimensional reconstruction. The American Journal of Medicine 2017 130, e383-e386DOI: (10.1016/j.amjmed.2017.04.002) Copyright © 2017 Elsevier Inc. Terms and Conditions

Figure 2 Color Doppler ultrasound scan demonstrating an anechoic mass within the porta hepatis (A), with internal flow (B) contiguous with the portal vein (B-D), measuring 5.3 × 3.3 cm, consistent with portal vein aneurysm. The anechoic mass is continuous with the vessel with monophasic waveform (portal vein), ruling out arterial aneurysm (C). The American Journal of Medicine 2017 130, e383-e386DOI: (10.1016/j.amjmed.2017.04.002) Copyright © 2017 Elsevier Inc. Terms and Conditions