Knowledge of communication between parietal abdominal veins, testicular vein and mesenteric veins is important for Surgeons, Urologists and Radiologists. These communications can result in varicocele or hemorrhoids and may lead to low success rate in hemorrhoid and varicocele surgeries. During routine dissection classes, we observed an unusual large venous plexus on the left psoas major muscle. The venous plexus was unilateral and was formed by many anastomotic venous channels on the psoas fascia and communicated with the left testicular and inferior mesenteric veins. The testicular and inferior mesenteric veins were significantly enlarged below the level of communication with the venous plexus.
Mesenteric Veins

Anatomy of portal and superior mesenteric vein confluence was investigated in 54 specimens collected from adult cadavers that underwent autopsy at ViÖt §øc Hospital during 1995 - 2000. Results showed that the average length of superior mesenteric vein is 203cm. The confluence of superior mesenteric and portal vein is under common truncal wall in 15/54 cases. 3 veins, including spleen, superior and inferior mesenteric veins meet each other at unique confluent point in 3/54 cases. 46/54 cases have 9 to 14 vein branches that flow to superior mesenteric vein at left wall of mobilized segment. These branches have cluster-like distribution in 4/45 cases. It is not found that the immobilized segment of superior mesenteric vein divided into two or three that cause difficulty for making portal-aortic anastomosis in right wall. 30/54 cases have Descomps trunk that flows to immobilized segment. 38/54 cases have 2-3 extra branches that flows to superior mesenteric vein from head of pancreas at posterior wall of immobilized segment
Veins ; anatomy & histology ; Mesenteric Veins

No abstract available.
Ischemia* ; Mesenteric Veins* ; Thrombosis*

No abstract available.
Mesenteric Veins ; Thrombosis

No abstract available.
Humans ; Mesenteric Veins* ; Nephrotic Syndrome* ; Thrombosis*

No abstract available.
Bile* ; Carcinoembryonic Antigen* ; Gallbladder* ; Mesenteric Veins*

We expierienced five cases of bilateral inferior vena cava for recent one year. We evaluated the CT findings of the cases and of dilated veins located in the left retroperitoneum (seven left gonadal, seven inferior mesenteric, and two left ascending lumber veins)in the viewpoints of the size, location and relation with the surrounding structures. Bilateral inferior vena cava (IVC) may be asymmetric and the left IYC may be smaller than other retroperitoneal veins with a round contour. The left lYC was located anterior to the spinal body and corresponded with contralateral vena cava in the anteroposterior plane. The gonadal vein was located anterior or anterolateral side of the psoas and always crossed the ureter. Most of the inferior mesenteric vein showed similar location to the opposite site of the vena cava in the anterolateral side of the psoas muscle, medial to the left ureter without crossing. The left ascending lumbar vein was similarly located to the left vena cava but dilated in a short segment. It is required to trace the vessel upward and downward and observe its continuity for correct differentiation. If it is impossible, some differential points suggested in the results of our study will be helpful for distinguishing them.
Gonads ; Mesenteric Veins ; Psoas Muscles ; Ureter ; Veins* ; Vena Cava, Inferior

PURPOSE: Acute mesenteric ischemia (AMI) is one of the most dramatic abdominal emergencies. The most common cause of AMI is a thrombo-embolism of the mesenteric artery or vein. The aim of this study was to evaluate the feasibility of CT angiography for evaluating mesenteric vascular steno-occlusive lesion in AMI. MATERIALS AND METHODS: Fifteen patients with clinically and angiographically proven AMI underwent a two-phase CT. The CT angiographic images were reconstructed using a 3D rendering algorithm, such as the maximum intensity projection and volume-rendering. All the CT angiographic images were reviewed with respect to stenosis or occlusion of mesenteric vessel by the consensus of two radiologists, and were correlated with the findings of digital subtraction angiography. RESULTS:Digital subtraction angiography (DSA) visualized 60 mesenteric vessels including the superior mesenteric artery (n=15) and vein (n=15), and the inferior mesenteric artery (n=15) and vein (n=15). DSA showed steno-occlusive lesions in 16 mesenteric vessels (13 superior mesenteric arteries, two superior mesenteric veins, and one inferior mesenteric artery). CT angiography detected steno-occlusive lesions in 16 mesenteric vessels (12 superior mesenteric arteries, one superior mesenteric vein, and three inferior mesenteric arteries). The sensitivity, specificity, and accuracy of CT angiography for evaluating mesenteric vascular steno-occlusive lesion were 87.5%, 95.4%, and 93.3%, respectively. CONCLUSION: CT angiography is an useful adjunct to abdominal CT in an AMI setting on account of its ability to detect the causes of AMI such as a steno-occlusive lesion of the mesenteric vessel.
Angiography* ; Angiography, Digital Subtraction* ; Consensus ; Constriction, Pathologic ; Emergencies ; Humans ; Ischemia* ; Mesenteric Arteries ; Mesenteric Artery, Inferior ; Mesenteric Artery, Superior ; Mesenteric Veins ; Sensitivity and Specificity ; Tomography, X-Ray Computed ; Veins

We recently encountered a case of posttraumatic SMAVF(Superior mesenteric arteriovenous fistula), which has treated by coil embolization. He had history of stab wound and emergent operation. Operative diagnosis was gastric perforation and mesenteric laceration which was simply repaired. After history of abdominal stab woung and operation, he developed palpitation and thrill in left upper abdomen. Recentrly he have experienced syncope twice. On superior mesenteric arteriogram, early visualiation of superior mesenteric vein and portal vein was noted. We embolized the SMAVF by using coils. Since coil embolization, palpitation and thrill disappreared.
Abdomen ; Diagnosis ; Embolization, Therapeutic* ; Fistula* ; Lacerations ; Mesenteric Arteries ; Mesenteric Veins ; Portal Vein ; Syncope ; Wounds, Stab

Vessel identification and dissection are the key processes of laparoscopic complete mesocolic excision (CME). Vascular injury will lead to complications such as prolonged operative time, intraoperative hemorrhage and ischemia of anastomotic stoma. Superior mesenteric artery (SMA), superior mesenteric vein(SMV), gastrointestinal trunk, left colic artery(LCA), sigmoid artery and marginal vessels in the mesentery have been found with possibility of heteromorphosis, which requires better operative techniques. Surgeons should recognize those vessel heteromorphosis carefully during operations and adjust strategies to avoid intraoperative hemorrhage. Preoperative abdominal computed tomography angiography(CTA) with three-dimensional reconstruction can find vessel heteromorphosis within surgical area before operation. Adequate dissection of veins instead of violent separation will decrease intraoperative bleeding and be helpful for dealing with the potential hemorrhage. When intraoperative hemorrhage occurs, surgeons need to control the bleeding by simple compression or vascular clips depending on the different situations. When the bleeding can not be stopped by laparoscopic operation, surgeons should turn to open surgery without hesitation.
Colonic Neoplasms ; surgery ; Dissection ; Hemorrhage ; prevention & control ; Humans ; Laparoscopy ; Mesenteric Artery, Inferior ; Mesenteric Veins ; Mesocolon ; surgery