PMC10075211_01
(a) Dissection of the right cervical region showing the variant branching pattern of the subclavian artery. CDST-cervicodorsoscapular trunk, SCM- sternocleidomastoid muscle, CCA-common carotid artery, Sc Ant- scalenus anterior, 1-first part of subclavian artery, 3-third part of subclavian artery; (b) Schematic diagram showing the variant branching pattern.
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There was a rare occurrence of a cervicodorsoscapular trunk (CDST) (Figure 1). At the posterior border of the scalenus medius muscle, this common trunk gave rise to superficial cervical, suprascapular, and dorsal scapular arteries, just anterior to the trapezius muscle (Figures 1 and 2).
(a) Dissection of the left cervical region showing the variant branching pattern of the subclavian artery. CDST-cervicodorsoscapular trunk, SCM- sternocleidomastoid muscle, Sc Ant- scalenus anterior, 1-first part of subclavian artery, 3-third part of subclavian artery; (b) Schematic diagram showing the variant branching pattern.
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All branches of the subclavian artery took their origin from its first part (Figure 2). At the posterior border of the scalenus medius muscle, this common trunk gave rise to superficial cervical, suprascapular, and dorsal scapular arteries, just anterior to the trapezius muscle (Figures 1 and 2).