T h y r o i d g l a n d
Anatomical structure of the thyroid gland and larynx.
Thyroid gland has two lobes connected by the isthmus.
Larynx has a female type of structure.
Thyroid cartilage angle is 100 degrees.
Position is changed.
Upper poles mount to the middle of upper horns of the thyroid cartilage.
Lower poles mount to 7th-8th tracheal cartilages.
Upper border of the isthmus mounts to the cricothyroid ligament.
Shape is deformed.
Anterior surface is protruded and antedisplaced.
Lateral border is straightened and displaced to outside.
Posterior surface is protruded and displaced towards vertibri.
Medial border is displaced to the sagittal line and repeats the shape of the trachea.
S i z e i s i n c r e a s e d.
Height of the thyroid lobe - 70 mm. Width - 60 mm.
Depth - 32 mm. Depth of the isthmus - 11 mm.
Volume of the thyroid gland (according to the tomographic findings) - 25,9 cm3.
Echostructure is microgranular, homogenous.
Integrated
optical density — 0.4323±0.1063 ![]() |
Fig.46.2. Small goiter. Reconstructed two-dimensional images of the thyroid gland. A - Right lateral view - projection on the sagittal plane. B - Anterior view - projection on the frontal plane. Scale 1:1. Horizontal lines in fig.46.2.B show the levels of transverse section. Numbers in rectangular frame indicate the sections included in fig.46.1. Signs. 1 - mus-culus constrictor pharyngis inferior, 2 - cartilago thyroidea, 3 - cartilago cricoidea, 4 - glandula thyroidea, lobus dexter, 5 - oesophagus, 6 - vertebra, 7 - trachea, 8 - sagittal line.