isolated spontaneous dissection of the superior mesenteric artery (SMA) are both well-recognized entities, and these were first reported on by Halpern et al. in 1968 and Bauersfield in 1947, respectively (1-3). Noninvasive diagnostic modalities such as Doppler ultrasonography (US), computed tomography (CT) and magnetic resonance imaging (MRI) all are known to provide adequate information for th...

Spontaneous isolated splanchnic artery dissection is uncommon with superior mesenteric artery (SMA) being the most commonly dissection-affected artery. Spontaneous celiac artery dissection is rare, but underestimation is anticipated due to variable clinical manifestations. Only 11% of celiac artery dissections are associated with SMA dissections. Spontaneous isolated splanchnic artery dissectio...

BACKGROUND Both spontaneous SMA dissection and anatomical variants of GIT vasculature are well known entities. We present a case initially diagnosed as an SMA dissection on CT, but upon detailed review of the imaging findings was considered to be incompletely fused ventral segmental arteries--a rare anatomic variant not well described before. This finding is clinically significant, as it can mi...

A true isolated superior mesenteric artery (SMA) dissection is a rare occurrence. The increasing use of diagnostic imaging studies has resulted in this rare disease being more recognized. A 68-year-old Caucasian female presented with sharp upper abdominal pain. Computed tomography (CT) of the abdomen showed dissection with thrombosis in the proximal SMA. Conservative management with bowel rest,...

OBJECTIVE The is to report immunohistochemical observations of aortic α-smooth muscle actin (SMA) expressions in patients with aortic aneurysm, acute aortic dissection, and coronary artery disease and to discuss phenotypic switching of smooth muscle cells (SMCs) of these lesions. METHODS Forty-nine consecutive patients scheduled for surgical treatment for acute type A aortic dissection (20 pa...

BACKGROUND AND METHOD The aim of this study was to assess retrospectively the clinical presentation, management and outcome of three patients with isolated SMA dissection encountered at Okinawa Prefectural Chubu Hospital, Japan from 2005 to 2006, along with a review of the literature. We follow up the patient's clinical symptoms and the image by using enhanced dynamic CT at 1 week, 1 or 2 month...

A 56-year-old man presented with abrupt onset epigastric and back pain for 4 hours. Computed tomography angiography (CTA) revealed a dissection at the proximal part of the superior mesenteric artery (SMA) without a limitation in distal flow or bowel ischemia (Fig. 1A). However, an 1-week follow-up CTA showed progression of the SMA dissection down to the distal jejunal branch (Fig. 1B). Thus, we...

Spontaneous isolated superior mesenteric artery (SMA) dissection was a sporadically reported vascular event, but an increasing number of case reports have been published in recent years. The optimal therapy opinions are widely divided. Despite there still being no consensus on the best treatment, an increasing number of patients in recent years have been reported to be treated successfully by n...

In this study, the case of a 46-year-old female patient with localized aortic root dissection and a superior mesenteric artery (SMA) aneurysm is described. Computed tomographic angiography could not clearly delineate an intimal flap in the aortic root, but it detected SMA aneurysm, which implied the presence of a vulnerability of the aortic wall. Finally, transesophageal echocardiography (TEE) ...

INTRODUCTION The supplementary motor area (SMA) is frequently involved by brain tumours (particularly WHO grade II gliomas). Surgery in this area can be followed by the 'SMA syndrome', characterised by contralateral akinesia and mutism. Knowledge of the connections of the SMA can provide new insights on the genesis of the SMA syndrome, and a better understanding of the challenges related to ope...