BREAST & THYROID

Question 1

ANTERIOR TRIANGLE

Answer 1

Medially: midline of neck
Laterally: medial border of sternocleidomastoid muscle
Superiorly: Inferior border of body of mandible

hyoid bone, suprahyoid and infrahyoid muscle are used to further subdivide the anterior triangle into 4 triangle

Question 2

CAROTID TRIANGLE

Answer 2

Superior: posterior border of digastric muscle
Lateral: Medial border of sternocleidomastoid muscles
Inferior: superior border of the omohyoid muscle

contain: caroid artery, internal jugular vein, hypoglossal and vagus nerves

Question 3

SUBMENTAL TRIANGLE

Answer 3

Inferiorly: hyoid bone
Medially: Midline of the neck
Laterally: anterior border of digastric

Question 4

SUBMANDIBULAR TIRANGLE

Answer 4

Superiorly: body of mandible
Anteriorly: Anterior border of digastric muscle
Posteriorly: Posterior border of digastric muscle

facial artery and vein pass through this area

Question 5

MUSCULAR TRIANGLE

Answer 5

Superiorly: hyoid bone
Medially: midline of the neck
Supero-laterally: superior border of the omohyoid bone
Infero-laterally: Inferior border of the sternocleidomastoid muscle

Question 6

POSTERIOR TRIANGLE

Answer 6

Anteriorly: posterior border of sternocleidomastoid muscle
Posteriorly: Anterior border of trapezius muscle
Base: Middle third of clavicle

Question 7

Middline swelling + move with deglutination

Answer 7

• Thyroid swelling
• Ectopid thyroid
• Thyroglossal cyst (moves with protrusion of tongue)
• Subhyoid bursitis / subhyoid cyst
• Enlarged pretracheal lymph node
• Laryngocele