lateral cervical region

(redirected from posterior triangle of neck)

lateral cervical region

[TA]
the region of the neck bounded by the sternocleidomastoid muscle, the trapezius muscle, and the upper border of the clavicle, including the omoclavicular triangle.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
They are most common in the posterior triangle of neck (97%) followed by sub-mandibular region (20%), and 5 % in rare site like abdomen, axilla, shoulder, chest wall, parotid region.
Most common lesions of posterior triangle of neck are mostly solids and include inflammatory and metastatic adenopathies, lymphomas, lipomas, and neurofibromatosis [71, 72].
On clinical examination, swelling was soft, cystic, non-mobile, situated in posterior triangle of neck extended anterior up to posterior border of sternocleidomastoid muscle and posterior up to anterior border of trapezius muscle and inferior up to upper border of clavicle measured 12 x 8 x 4 cm size with transillumination and fluctuation test positive.
On examination, a solitary swelling of 6cms x 5cms beneath the left sternocleidomastoid muscle, ill-defined borders, cystic in consistency, non-compressible, fluctuant, non-tender, with restricted mobility noted in the posterior triangle of neck.
Ultrasound of neck showed a cystic lesion measuring 5.3x4.9x3.5cms with internal echoes & septation in the posterior triangle of neck extending anteriorly into carotid triangle.
Other structures in the region of posterior triangle of neck were normal.
General Examination revealed 3 discrete, firm, nontender lymph nodes of size 1cm palpable in the posterior triangle of neck. Systemic examination was unremarkable.
During exposure of posterior triangle of neck, we observed long thin belly of a muscle superficial to brachial plexus and subclavian vessels, which shared a common origin with subclavius muscle anteriorly, while posteriorly this muscle was attached to superior angle of scapula, medial to the attachment of inferior belly of omohyoid.
During dissection of left side of posterior triangle of neck, an aberrant muscle (subclavius posticus) was found superficial to brachial plexus and subclavian artery.

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