
Right transverse section.

Left transverse section.
Man, 25 y. o.
Congenital
hypothyroidism by thyroid agenesis.
Therapy with T4 was started in the seventh month of life;
neurologic damages occurred.
Transverse section of the neck: no visible echoes of thyroid
tissue.
A- Jugular vein
B- Carotid
C- Windpipe
D- Prethyroid muscle
E- SCM