Anatomical variations of the branches from left colic artery and middle colic artery at splenic flexure.
Surg Radiol Anat
; 44(3): 467-473, 2022 Mar.
Article
en En
| MEDLINE
| ID: mdl-35230505
ABSTRACT
BACKGROUND:
Variations of the vasculature at splenic flexure by left colic artery (LCA) and middle colic artery (MCA) remain ambiguous.OBJECTIVES:
This study aim to investigate the anatomical variations of the branches from LCA and MCA at splenic flexure area.METHODS:
Using ultra-thin CT images (0.5-mm thickness), we traced LCA and MCA till their merging site with paracolic marginal arteries through maximum intensity projection (MIP) reconstruction and computed tomography angiography (3D-CTA).RESULTS:
A total of 229 cases were retrospectively enrolled. LCA ascending branch approached upwards till the distal third of the transverse colon in 37.6%, reached the splenic flexure in 37.6%, and reached the lower descending colon in 23.1%, and absent in 1.7% of the cases. Areas supplied by MCA left branch and aMCA were 33.2%, 44.5% and 22.3% in the proximal, middle and distal third of transverse colon of the cases, respectively. The accessory MCA separately originated from the superior mesenteric artery was found in 17.9% of the cases. Mutual correlation was found that, when the LCA ascending branch supplied the distal transverse colon, MCA left branch tended to feed the proximal transverse colon; when the LCA ascending branch supplied the lower part of descending colon, MCA left branch was more likely to feed the distal third of transverse colon.CONCLUSIONS:
Vasculature at splenic flexure by LCA and MCA varied at specific pattern. This study could add more anatomical details for vessel management in surgeries for left-sided colon cancer.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias del Colon
/
Colon Transverso
Tipo de estudio:
Observational_studies
Límite:
Humans
Idioma:
En
Revista:
Surg Radiol Anat
Asunto de la revista:
ANATOMIA
/
RADIOLOGIA
Año:
2022
Tipo del documento:
Article