scholarly journals Course and Variations in Branches of Inferior Mesenteric Artery

2021 ◽  
Vol 9 (1) ◽  
pp. 17-20
Author(s):  
Prerna Gupta ◽  
Neeraj Gupta
Keyword(s):  
Mesenteric Artery ◽  
Inferior Mesenteric Artery ◽  
Mesenteric Arteries ◽  
Middle Colic Artery ◽  
Type I ◽  
Colic Artery ◽  
Male Fetus ◽  
Male Adult ◽  
Female Fetus ◽  
Study Results

Background : The mesenteric blood supply is a combination of rich collateral networks. There are frequent anatomical variants encountered and these variations are sometimes involved in pathologies. Treatment of which requires a better understanding of the variations in the normal anatomy of the inferior mesenteric artery. Methods : The present study was carried out in the Department of Anatomy, Prathima Institute of Medical Sciences, Karimnagar. A total of n=50 specimens, with n=17 adult males and n=2 adult female cadavers and fetuses of which n=26 were term and n=2, was preterm. Female fetuses n=2 of term and n=1 preterm were included in the study. Results : The following variations were observed in the present study of course and variations in the branches of the inferior mesenteric artery and are grouped into three types. Type I: In this type middle colic artery is arising from the inferior mesenteric artery instead of the superior mesenteric artery. It is a rare-variations and observed in a female fetus. Type-II: Four Sigmoidal arteries are arising from an inferior mesenteric artery, after the origin of the left colic artery. This type is observed in a male fetus. Type-III: Three Sigmoidal arteries are originated from the inferior mesenteric artery. This type was observed in a male adult and a male fetus. Conclusion: Out of the 50 cases included in the study we found type 1 variation of IMA in 2% of cases, type 2 variation was found in 2% samples, and type 3 variation was found in 4% of samples. Based on the variations radiologists and Surgeons should be aware of possible consequences when doing colectomy, right hemicolectomy, left hemicolectomy, sigmoidectomy, en-bloc resection of the head of the pancreas, aneurysm, and chronic bowel ischemia. The present study is also useful for reconstructive surgeries in inferior mesenteric arteries in the case of ischemia.

scholarly journals Anatomical study on origin, course and distribution of cranial and caudal mesenteric arteries in the White New Zealand rabbit (Orycotolagus cuniculus)

2012 ◽  
Vol 2 (2) ◽  
pp. 54-59 ◽  
Author(s):  
M Uddin ◽  
ML Rahman ◽  
MA Alam ◽  
ASML Ahasan
Keyword(s):  
New Zealand ◽  
Abdominal Aorta ◽  
Transverse Colon ◽  
Mesenteric Artery ◽  
Mesenteric Arteries ◽  
Middle Colic Artery ◽  
Colic Artery ◽  
Left Wall ◽  
Zealand Rabbit ◽  
Descending Colon

The present study was carried out on fifteen healthy adult White New Zealand rabbit (Orycotolagus cuniculus) to clarify the obscure mesenteric arteries, which and their branches which are usually involved in intestinal surgery. The mesenteric artery is a high caliber vessel, 2cm in length dependent on the abdominal aorta, right below the emergence of the vessels destined for the liver and stomach. The animals were sacrificed, injecting diazepam (30 mg/kg) in jugular vein. Cannulation of the abdominal aorta, perfusion with warmed water (40ºC) and stained latex injection (Neoprene 450, Capitol Scientific, Austin, U.S.A, Red carmine stain) were performed, followed by fixation. With formalin (10%) the dissection and photographic documents (Casio Cyber-shot, 12.1 mega pixels) made it possible to systemize the arteries and define the vascular patterns of the viscera. The results prone that the cranial mesenteric artery of the White New Zealand rabbit (Orycotolagus cuniculus) arose from the abdominal aorta, at the level of the second lumbar vertebra, entered the cranial mesentery forming its root, then proceeded caudoventrally in the mesojejunum and continued as the last cecal artery. The cranial mesenteric artery gave off: - Caudal pancreaticoduodenal artery to the right lobe of the pancreas and the descending and ascending parts of the duodenum. Middle colic artery, a small vessel (frequently two) arising from the left wall and passing to the transverse colon, Eighteen to twenty jejunal arteries, Ileocecocolic artery to the ileum, cecum, ascending colon, transverse colon and the cranial part of the descending colon. The caudal mesenteric artery arose from the abdominal aorta at the level of the caudal border of the root of the 6th lumbar transverse process, passed caudoventrally in the descending mesocolon, then divided into: left colic artery to the caudal two thirds of the descending colon, and cranial rectal artery to the cranial segment of the rectum. The obtained results were compared with their corresponding in the domestic animals, especially the domestic carnivores and laboratory animals. DOI: http://dx.doi.org/10.3329/ijns.v2i2.11386 International Journal of Natural Sciences (2012), 2(2):54-59

scholarly journals A three-dimensional computed tomography angiography study of the anatomy of the accessory middle colic artery and implications for colorectal cancer surgery

2020 ◽  
Vol 42 (12) ◽  
pp. 1509-1515
Author(s):  
Mitsuhiro Yano ◽  
Shinji Okazaki ◽  
Ichiro Kawamura ◽  
Shunichiro Ito ◽  
Shintaro Nozu ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Computed Tomography ◽  
Mesenteric Artery ◽  
Inferior Mesenteric Artery ◽  
Three Dimensional ◽  
Middle Colic Artery ◽  
Inferior Mesenteric Vein ◽  
Colic Artery ◽  
Left Colic Artery ◽  
Colorectal Cancer Surgery

Abstract Purpose In the present study, we focused on the accessory middle colic artery and aimed to increase the safety and curative value of colorectal cancer surgery by investigating the artery course and branching patterns. Methods We included 143 cases (mean age, 70.4 ± 11.2 years; 86 males) that had undergone surgery for neoplastic large intestinal lesions at the First Department of Surgery at Yamagata University Hospital between August 2015 and July 2018. We constructed three-dimensional (3D) computed tomography (CT) angiograms and fused them with reconstructions of the large intestines. We investigated the prevalence of the accessory middle colic artery, the variability of its origin, and the prevalence and anatomy of the arteries accompanying the inferior mesenteric vein at the same level as the origin of the inferior mesenteric artery. Results Accessory middle colic artery was observed in 48.9% (70/143) cases. This arose from the superior mesenteric artery in 47, from the inferior mesenteric artery in 21, and from the celiac artery in two cases. In 78.2% (112/143) cases, an artery accompanying the inferior mesenteric vein was present at the same level as the origin of the inferior mesenteric artery; this artery was the left colic artery in 92, the accessory middle colic artery in 11, and it divided and became the left colic artery and the accessory middle colic artery in 10 cases. Conclusion 3D CT angiograms are useful for preoperative evaluation. Accessory middle colic arteries exist and were observed in 14.9% of cases.

Preservation of the Arterial Arc Formed by Left Colic Artery, Proximal Inferior Mesenteric Artery, and the First Branch of Sigmoid Arteries in Anus Saving Treatment of Low Rectal Cancer

2020 ◽  
pp. 000313482098318
Author(s):  
Zakari Shaibu ◽  
Zhi-hong Chen ◽  
Acquah Theophilus ◽  
Said A. S. Mzee
Keyword(s):  
Rectal Cancer ◽  
Blood Supply ◽  
Mesenteric Artery ◽  
Inferior Mesenteric Artery ◽  
Leakage Rate ◽  
Low Rectal Cancer ◽  
Mesenteric Arteries ◽  
Colic Artery ◽  
Left Colic Artery ◽  
Number Of Patients

Background Low anterior, ultralow anterior, and intersphincteric resection are conventional, elective anus-sparing techniques for low rectal cancer, and good prognosis depends on a good blood supply and tension-free anastomosis. Aim The goal is to assess the effect of preserving the arc formed by the left colic and proximal inferior mesenteric arteries (IMAs), and first branch of the sigmoid arteries on the anastomotic blood supply, tension, and leakage rate in anus-sparing surgery for low rectal cancer. Method From 2011 to 2020, a patient with low rectal cancer resection was distributed into the ligation group (42 cases with inferior mesenteric artery ligation) and the preservation group (61 cases with preservation of the left colic and proximal IMAs and first branch of the sigmoid artery). Results We evaluated patient characteristics, operative results, morbidity, and postoperative follow-up results. There were comparable outcomes between ligation and preservation groups in relations to the number of patients in each operative procedure, duration of surgery, operative blood loss, postoperative hospital stay, and the number of patients with protective stoma ( P >.05). In postoperative morbidity, there were similar outcomes between ligation and preservation groups in terms of anastomotic subclinical dehiscence, bleeding and stricture, and urinary retention ( P >.05). There were significant differences in anastomotic leakage and intra-abdominal abscess ( P < .05). Conclusion Preservation of the arterial arc formed by left colic artery, proximal IMA, and the first branch of sigmoid arteries with apical lymph node dissection could increase anastomotic blood supply, reduce anastomotic tension, and leakage rate in anus-saving treatment of low rectal cancer.

scholarly journals Anatomical Study of Variations in the Branches of Superior Mesenteric Artery – A Study from a Teaching Hospital in Chennai, India

2021 ◽  
Vol 10 (20) ◽  
pp. 1506-1510
Author(s):  
Ganga Venkatachalam ◽  
Kanagavalli Paramasivam ◽  
Lakshmi Valliyappan
Keyword(s):  
Superior Mesenteric Artery ◽  
Abdominal Aorta ◽  
Mesenteric Artery ◽  
Lumbar Vertebra ◽  
Anatomical Study ◽  
Middle Colic Artery ◽  
Branching Pattern ◽  
Colic Artery ◽  
Human Cadavers ◽  
Derivatives Of

BACKGROUND Superior Mesenteric Artery (SMA) is one of the anterior branches of the abdominal aorta. It originates from abdominal aorta at the level of lower border of first lumbar vertebra, one centimeter below the coeliac trunk. It gives the first branch inferior pancreaticoduodenal artery (IPDA), The colic branches arise from concave right side of the superior mesenteric artery, these are middle colic artery (MCA), right colic artery (RCA), ileo colic artery (ICA). Jejunal and ileal branches arise from left side of the SMA. Superior mesenteric artery supplies derivatives of midgut. Knowledge of branching pattern of the SMA is clinically important to gastroenterologists operating on gut and neighboring structures like pancreas, duodenum, and liver. We wanted to study the variations in the branches of superior mesenteric artery. METHODS This is a descriptive study conducted on 50 adult embalmed human cadavers by conventional dissection method, the findings were noted and tabulated. RESULTS Present study shows that inferior pancreatic duodenal artery orginated from SMA in 47 (94 %) specimens. IPDA was absent in 3 (6 %) specimens. Middle colic artery was found to arise from SMA in 48 (94 %) and MCA was absent in 2 (4 %) specimens. Right colic artery was found to arise from SMA in 47 (94 %) specimens and it was absent in 3 (6 %) specimens. Ileo-colic artery was found to arise from SMA in all 50 (100 %) specimens. CONCLUSIONS Awareness of these complex variations may prevent devastating complications during colonic surgeries. Variations in the branching pattern of superior mesenteric artery is essential for surgeons operating on derivatives of midgut, liver, pancreas. KEY WORDS Branches, Colic, Superior Mesenteric Artery, Variations

Duplex ultrasound interpretation criteria for inferior mesenteric arteries

Vascular ◽  
2012 ◽  
Vol 20 (3) ◽  
pp. 145-149 ◽  
Author(s):  
Ali F AbuRahma ◽  
L Scott Dean
Keyword(s):  
Mesenteric Artery ◽  
Inferior Mesenteric Artery ◽  
Duplex Ultrasound ◽  
Mesenteric Arteries ◽  
Reasonable Accuracy ◽  
Diastolic Velocity ◽  
Interpretation Criteria ◽  
The Mean ◽  
Better Than ◽  
Mesenteric Arteriography

There is no specific duplex ultrasound (DUS) criteria for the diagnosis of inferior mesenteric artery (IMA) stenosis. This study will define the optimal duplex velocity values with the best overall accuracy (OA) in detecting ≥50% stenosis of the IMAs. Eighty-five IMAs with both DUS and mesenteric arteriography were analyzed. Eighty-five IMAs were examined: 45 were normal, 12 with <50% stenosis, eight with ≥50–69% stenosis and 15 with ≥70% stenosis (including occlusion) based on angiography. The mean peak systolic velocities (PSVs) for a normal IMA, <50% and ≥50% stenosis was 105, 215 and 392 cm/second, respectively ( P < 0.0001). The most accurate PSV in detecting ≥50% stenosis was ≥250 cm/second with a sensitivity of 90%, a specificity of 96% and an OA of 95%. The most accurate end-diastolic velocity (EDV) in detecting ≥50% stenosis was ≥80% or ≥90 cm/second, with an OA of 86%, a sensitivity of 60% and a specificity of 100%. The most accurate ratio in detecting ≥50% stenosis was ≥4 or ≥4.5 with an OA of 93%.Receiver operator curves analysis showed that the PSV was not better than EDV and PSV ratio in detecting ≥50% stenosis ( P = 0.1661 and 0.4568, respectively). In conclusion, specific IMA PSVs, EDVs and IMA/aortic systolic ratios can be used in detecting significant IMA stenosis with reasonable accuracy.

Rupture prone aneurysm of the inferior mesenteric artery complicated by mid aortic syndrome with occluded celiac and superior mesenteric arteries

VASA ◽  
2011 ◽  
Vol 40 (1) ◽  
pp. 73-77 ◽  
Author(s):  
Werth ◽  
Rodionov ◽  
Hinterseher ◽  
Beyer-Westendorf ◽  
Stroszczynski ◽  
...  
Keyword(s):  
Mesenteric Artery ◽  
Inferior Mesenteric Artery ◽  
Bypass Graft ◽  
Celiac Trunk ◽  
Mesenteric Arteries ◽  
Vascular Pathology ◽  
Vein Bypass ◽  
Large Aneurysm ◽  
Vein Bypass Graft ◽  
Saphenous Vein Bypass Graft

We present the case of a 45-year-old male patient with a large aneurysm of the inferior mesenteric artery complicated by mid aortic syndrome with occlusion of the celiac trunk and superior mesenteric artery. The vascular pathology was detected by CT imaging after presentation and hospitalization with symptoms of acute cholecystitis. After resolve of the acute symptoms, the aneurysm was resected and the proximal inferior mesenteric artery interponated with a reversed saphenous vein bypass graft. Besides presenting this case we review the literature concerning the rare descriptions of inferior mesenteric artery aneurysms.

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