These muscles are found lateral to each lobe of the thyroid.
What are the sternocleidomastoid muscles?
Internal microcalcifications in the thyroid indicates this. 
What is malignancy?
Oligomenorrhea, heat intolerance, and tachycardia are all symptoms of this.
What is Graves disease?
This is a cystic mass at the mandibular angle.
What is a branchial cleft cyst?
A hypoechoic mass, taller-than-wide shape, mass with internal microcalcifications, a solitary mass, vascularity within the central part of a nodule, interrupted peripheral calcification, lobulated margins, enlargement of the cervical lymph nodes, and a cold nodule indicates this.
What is a malignant thyroid nodule?
This is the main duct of the parotid gland.
This is the name for a round cyst in the thyroid that has hyperechoic foci.
What is a colloid cyst?
Scaly plaques and swelling on the lower legs is associated with Graves disease and called this.
What is pretibial myxedema?
A thyroid inferno is most commonly associated with this.
What is Graves disease?
This is the most common form of salivary gland cancer.
What is mucoepidermoid carcinoma?
What is the Wharton Duct?
#4 indicates this muscle. 
What is the sternocleidomastoid muscle?
This pathology causes weight gain, menorrhagia, cold sensitivity, and a heterogeneous thyroid appearance.
What is autoimmune lymphatic thyroiditis, also known as Hashimoto thyroiditis?
Fibromatosis colli mostly affects this muscle.
What is the sternocleidomastoid muscle?
A thyroid isthmus over this length indicates thyroid enlargement.
What is 10 mm?
These muscles are posterior to each thyroid gland.
What are the longus colli muscles?
This hypoechoic mass adjacent to the thyroid is associated with elevated serum calcium and elevated PTH. 
What is a parathyroid adenoma?
Dysphagia, dyspnea, and hoarseness indicates this.
What is a goiter?
This is an autoimmune disease that affects the glands that produce moisture, leading to dysfunction of the salivary glands and dryness of the eyes, nose, skin, and mouth.
What is Sjögren’s Syndrome?
This is an anechoic mass near the angle of the mandible that is congenital.
What is a branchial cleft cyst? 
This hormone is the most abundantly produced by the thyroid.
What is Thyroxine?
This image demonstrates this. 
What is a thyroid inferno?
Another name for Graves disease is this.
What is diffuse toxic goiter?
Extensive cystic components, cysts <5 mm, a hyperechoic mass, "eggshell" calcifications, spongiform composition, wider-than-tall shape, and hot nodules all indicate this.
What is a benign thyroid nodule?
This is a palpable mass within the midline of the neck superior to the thyroid gland. If infected, it is painful. It is anechoic, well-defined, unilocular with posterior enhancement and may have internal components.

What is a thyroglossal duct cyst?