Unusual Arterial Pattern of the Gastrointestinal Tract

Nassar, Lara; Atweh, Lamya A.; Kutoubi, Aghiad Al

doi:10.1177/1538574412445217

Cited by 5 publications

(1 citation statement)

References 10 publications

(15 reference statements)

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“…Nassar et al [23] also report a rare incident of a male patient with an IMA arising from the left common iliac artery, and the ipsilateral external iliac artery having a corkscrew pattern. These were detected during CT angiography of the abdomen.…”

Section: Origin Of Inferior Mesenteric Arterymentioning

confidence: 99%

A Comprehensive Review of the Anatomy of the Inferior Mesenteric Artery: Branching Patterns, Variant Anatomy and Clinical Significance

McSweeney¹,

Kotakadeniya

Dissabandara

2020

SN Compr. Clin. Med.

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The objective of this review is to describe the normal and variant anatomy of the inferior mesenteric artery (IMA), including a brief overview of the relevant embryology, as well as proposing a classification system of the IMA vasculature, and clinical significance. A systematic review of articles published in Google Scholar and PubMed database using search terms: inferior mesenteric artery anatomy, inferior mesenteric artery variation, inferior mesenteric artery development, mesenteric circulation anatomy and variation, inferior mesenteric artery angiography. This was followed by review of the reference list of relevant publications to reveal publications missed during the initial search. Several standard anatomy and surgery text books were also referred for normal anatomy. The anatomy of the inferior mesenteric system is highly variant, with only a small proportion of anatomical, angiographic or surgical studies providing support for what is traditionally taught to be normal anatomy. Whilst the origin of the inferior mesenteric artery is less variant, the branching into left colic, sigmoidal and superior rectal arteries is variable between individuals in terms of origin of branches, number of branches and the presence or absence of certain branches. Whilst there did not appear to be a common classification system, similarities included three main variants of branching with a colosigmoid trunk, recto-sigmoid trunk or common trifurcation. There is a disparity between what is described in anatomical texts as the 'normal' IMA, and what is seen in anatomical, radiological and surgical research studies. The variable anatomy of the inferior mesenteric artery and its branches is significant in radiological interpretation and colorectal surgery from both an oncological perspective when considering resection, as well as in colonic ischaemia. A classification system has been introduced with a stepwise approach to the assessment of the IMA anatomy to avoid misleading nomenclature and provide a framework for surgeons to assess the vasculature.

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Section: Origin Of Inferior Mesenteric Arterymentioning

confidence: 99%

A Comprehensive Review of the Anatomy of the Inferior Mesenteric Artery: Branching Patterns, Variant Anatomy and Clinical Significance

McSweeney¹,

Kotakadeniya

Dissabandara

2020

SN Compr. Clin. Med.

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Abdominal Aorta

Sahni

Aggarwal

Gupta

et al. 2016

Bergman's Comprehensive Encyclopedia of Human Anatomic Variation

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A rare branching pattern of hindgut: absence of inferior mesenteric artery

Kim

Han

2016

Surg Radiol Anat

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The arterial system of the gastrointestinal tract has many variations. However, variation in the inferior mesenteric artery (IMA) is less common than for the other abdominal arteries. The case in the present cadaver subject showed a variation in the anatomy of the IMA that differed from those seen in previous studies, because it did not originate from the abdominal aorta and had no branches. A single artery arising from branches of the inferior pancreaticoduodenal and middle colic arteries supplied the hindgut. This variation generated blood vessels along the digestive tract during the later stages of development. The marginal artery of the colon in this case probably was more highly developed instead of the IMA. It is clinically important to know the range of variations, as these data are used in the diagnosis and treatment of abdominal diseases. This hitherto unknown variation might affect the health of patients, and we recommend radiographic examinations for diagnosis and treatment.

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Unusual Arterial Pattern of the Gastrointestinal Tract

Cited by 5 publications

References 10 publications

A Comprehensive Review of the Anatomy of the Inferior Mesenteric Artery: Branching Patterns, Variant Anatomy and Clinical Significance

A Comprehensive Review of the Anatomy of the Inferior Mesenteric Artery: Branching Patterns, Variant Anatomy and Clinical Significance

Abdominal Aorta

A rare branching pattern of hindgut: absence of inferior mesenteric artery

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