Page 25 - SONO 260 Chapter 12 The Neck
P. 25
ANATOMY & PHYSIOLOGY OF THE
PARATHYROID GLANDS
• There are typically two pairs of parathyroid glands, though some individuals may have a fifth gland.
• Their locations are variable.
• However, commonly one is located near the posterior aspect of the midportion of each lobe, and one is often positioned inferior to each lobe.
• Normal parathyroid glands will measure 5.0 x 3.0 x 1.0 mm and their sonographic appearance is similar to thyroid tissue.
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