SMA Dissection 48-year-old female who presents with diffuse abdominal pain and tearing back pain associated with nausea and vomiting. Axial (A) and sagittal (B) CT images demonstrate a short segment nonocclusive type II dissection of the mid SMA (red arrows) without bowel wall thickening or ischemia, amenable to stenting. The 3D volume rendering sagittal (C) and coronal (D) CT images depict the extent of the dissection (yellow arrows).  |
SMA Dissection 56-year-old male with Marfan syndrome. Sagittal images (A and B) demonstrating the long segment of SMA dissection with the flap extending 11 cm. An aneurysm of the mid-SMA measuring 1.7 cm is identified by the yellow arrows. The false lumen is patent and provides flow to multiple intestinal branches. The start of the dissection flap (blue arrow) is 1.4 cm from the origin of the SMA. All findings are important to know for possible endovascular treatment.  |
SMA Dissection 49-year-old male who presents with acute onset abdominal pain radiating to his back pain. Coronal (A and B) and sagittal (C) CT images demonstrate a proximal dissection of the SMA (red arrow) extending into jejunal and ileal branches (yellow arrows). Thrombosed and dilated proximal false lumen depicted by the blue arrow. Near complete occlusion of the distal SMA (orange arrow).  |
SMA Dissection 59-year-old male with a type B aortic dissection. Axial image (A) and the volume rendering 3D image demonstrate the descending aorta dissection flap (red arrow) involving the SMA (yellow arrow), precluding primary repair with endovascular stenting. The volume rendering 3D image depicts the blind ending false lumen with intestinal branches (blue arrow).  |
Visceral Artery Aneurysms: Facts Splenic artery aneurysms are the most common VAAs, representing 60–70% of all VAAs. Significantly less common are hepatic artery aneurysms and celiac/ mesenteric artery aneurysms, which comprise 20 and 10% of VAAs, respectively. Splenic artery aneurysms are most common among multiparous women, while hepatic and gastroduodenal arteries are more common in men. Celiac and superior mesenteric artery aneurysms have been reported equally among both sexes . |
Visceral Artery Aneurysms: Facts Etiologies for VAAs include atherosclerosis (most common, 32%), vasculitis, collagen vascular disease, infection, fibromuscular dysplasia, trauma (22%), and iatrogenic and idiopathic causes. Multiple aneurysms are found in up to one third of patients and are frequently associated connective tissue or collagen vascular diseases. |
Visceral Artery Aneurysms: Treatment
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Splenic Artery Aneurysm Splenic artery aneurysms, defined as a dilation of greater than 1 cm in diameter, are the most common type of VAAs. Over 80% of patients with splenic aneurysms are asymptomatic. The small subset of symptomatic individuals typically present with epigastric pain, nausea, vomiting, or anorexia. Spontaneous rupture is the presenting complication in up to 10% of all SAAs, but the prevalence increases to 28% in giant SAA (more than 10 cm in size). |
Splenic Artery Aneurysms: Causes
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Splenic Artery Pseudoaneurysms: Associated With
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Splenic Artery Pseudoaneurysms: Presentation
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1cm Splenic Artery Aneurysm  |
Portal Hypertension and Splenic Artery Aneurysm  |
Splenic Artery Aneurysm  |
Plus GDA Aneuyrsm  |
Splenic Artery Aneurysm  |
Splenic Artery Aneurysm  |
Giant Splenic Artery Aneurysm  |
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Celiac and Splenic Artery Aneurysms and Ehlers Danlos Syndrome  |
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Spenic Artery Pseudoaneurysm  |
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Splenic Artery Pseudoaneurysm  |
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Renal Artery Stenosis
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Renal Artery Stenosis
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Renal Artery Stenosis  |
RAS: Benefits of Stenting
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Renal Artery Stenosis  |