A cyst in the neck caused by persistence of portions of, or by lack of closure of, the primitive thyroglossal duct. (Dorland, 27th ed)

'Tongue diseases' is a broad term referring to various medical conditions that primarily affect the structure, function, or appearance of the tongue, including but not limited to infections, inflammatory conditions, autoimmune disorders, congenital abnormalities, and malignancies.

Defective development of the THYROID GLAND. This concept includes thyroid agenesis (aplasia), hypoplasia, or an ectopic gland. Clinical signs usually are those of CONGENITAL HYPOTHYROIDISM.

A malignant neoplasm characterized by the formation of numerous, irregular, finger-like projections of fibrous stroma that is covered with a surface layer of neoplastic epithelial cells. (Stedman, 25th ed)

The part of a human or animal body connecting the HEAD to the rest of the body.

Tumors or cancer of the THYROID GLAND.

Surgical removal of the thyroid gland. (Dorland, 28th ed)

Diseases of LYMPH; LYMPH NODES; or LYMPHATIC VESSELS.

A highly vascularized endocrine gland consisting of two lobes joined by a thin band of tissue with one lobe on each side of the TRACHEA. It secretes THYROID HORMONES from the follicular cells and CALCITONIN from the parafollicular cells thereby regulating METABOLISM and CALCIUM level in blood, respectively.