Bt Anjiografi İncelemelerinde İnferior Mezenterik Arterin Anatomik Özellik ve İlişkilerinin Değerlendirilmesi

Abstract

Balcı H,Evaluation of Inferior Mesenteric Artery Anatomy and its Relations on CT

Anjiografi Examinations, Hacettepe University, Faculty of Medicine, Department

of Radiology, Thesis in Radiology, Ankara, 2017

The aim of this study is to evaluate inferior mesenteric artery (IMA) anatomy,

variations and its course with multislice computed tomography angiography

(MSCTA). We evaluated IMA aterosclerosis, branching pattern of IMA, distance

between origin of IMA and its first branch (truncus diameter), distance between

IMA origin and celiac artery origin, distance between IMA origin and superior

mesenteric artery (SMA) origin, and the distance between IMA origin and aortic

bifurcationin in 200 patients who underwent MSCTA studies for several reasons.

Branching patten was classified in accordance with Zebrowski classification. Our

patient cohort composed of 114 (57%) male and 86 (43%) female. The mean age

was 57.09 (+/-18.6) years. Aterosclerotic changes was observed in 57 patients

(28.5%). The IMA trunk diameter was 37,8 +/- 10,1 mm, distance between IMA

origin and celiac artery was 84,23 +/- 13,27 mm, distance between IMA and SMA

was 67 +/- 12 mm, distance between IMA and aortic bifurcation was 42,1 +/- 9,6

mm. The IMA was detected in all our patients and originated from the anterior wall

of the abdominal aorta. 194/200 of the cases (97%) cvould be classified in

accordance with Zebrowski classification. 6 patients (3%) demonstrated several

different branching configurations that were not in compliance with Zebrowski

classification and these cases were seperately discussed in detail. We classified the

patients with Zebrowski classification as following: 8 patients (4%) type A, 103

patients (51.5%) type B, 28 patients (14 %) type C, 3 patients (1,5 %) type D, 5

patients (2,5 %) type E, 2 patients (1%) type G, 45 patients (22,5 %) type H. Sigmoid

artery arising from IMA could not be detected in 2 patients, while in 1 patient there

was no left colic artery arising from the IMA. In 3 patients right colic artery was

observed to arise from IMA. In conclusion; the branching pattern of IMA had a great

variability and the awaraness of this high variability may have a strong clinical

impact.