Variant Origin of the Left Vertebral Artery from a Vertebro-Subclavian Trunk Associated with an Unusual Branch Arising from the Brachiocephalic Trunk
- Author:
Satheesha BN
;
Sirasanagandla SR
;
Surekha DS
;
Deepthinath R
;
Sudarshan S
;
Raghu J
- Publication Type:Case Reports
- Keywords:
Vertebral artery;
subclavian artery;
variation;
brachiocephalic trunk;
thymic branch;
tracheal branch
- From:Journal of Surgical Academia
2014;4(1):73-75
- CountryMalaysia
- Language:English
-
Abstract:
Variant origin of the left vertebral artery (LVA) from the arch of aorta is well documented in the literature.
Involvement of complex sequential developmental steps in the aortic arch formation results in different patterns of
origin of LVA. Morphological variations in the LVA are thought to alter the cerebral hemodynamics and can cause
the cerebral dysfunction. Knowledge of the morphological variations of the LVA is useful while performing the head
and neck and thoracic surgeries. We here report one of the extremely rare patterns of the LVA origin, in a male
cadaver aged about 65 years. LVA and left subclavian artery (LSA) arose as a common vertebro-subclavian trunk
from the convexity of the aortic arch. Further, brachiocephalic trunk (BT) gave an unusual artery from its anterior
surface. This artery divided into thymic and tracheal branches. Variant origin of thymic branch may be crucial during
imaging and thymectomy procedures.
- Full text:P020150617571414654375.pdf
