Morphological variations of Superior Mesenteric Artery: A cadaveric study.
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Date
2013-07
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Abstract
Background: Anatomical knowledge of the variations of Superior mesenteric artery (SMA) and its branches is
important to minimize the complications and hence this article will be helpful for the clinicians planning surgery
and intervention around the aforementioned vessels. Materials and Methods: In the present study, we studied
the pattern of arrangement and distribution of the SMA in twenty cadavers in the gross anatomy dissection
room in the department of anatomy, AIIMS, New Delhi. Results and Discussion: On the basis of branching
pattern of SMA, the cadavers were divided into three groups I, II, III. Group I consisted of the most usual pattern
of arrangement of SMA, in 70% of cases (14 cadavers). In Group II i.e. in 25 % cases (5 cadavers) we observed a
common trunk of ileocolic and right colic arteries. Group III consisted of the rarest variation in the branching
pattern of SMA, where we got a common trunk of left colic artery with an accessory splenic artery arising from
anterior aspect of SMA, instead of Inferior mesenteric artery (IMA) which was seen in 5% cases (1 cadaver).Main
splenic artery took origin from coeliac trunk as usual. Conclusions: These uncommon and rare variations in the
branching pattern of arteries of the gut are clinically very important for surgeons and radiologists to prevent
damage to these vessels which otherwise may lead to severe haemorrhage and other complications. In the
present article we discuss about the morphology and development of the SMA along with its variations.
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Keywords
COLIC BRANCHES, ILEOCOLIC ARTERY, INFERIOR MESENTERIC ARTERY, SUPERIOR MESENTERIC ARTERY, VARIATIONS
Citation
Jain Pooja, Motwani Rohini. Morphological variations of Superior Mesenteric Artery: A cadaveric study. International Journal of Anatomy and Research. 2013 Jul-Sept; 1(2): 83-97.