Abstract
Developmental defects of the thyroid gland are very rare. The common developmental
abnormalities are ectopic thyroid, hemiagenesis and agenesis of thyroid gland. These
developmental defects may or may not be associated with deranged thyroid function
tests. Ultrasonography (USG) is the initial modality of choice for thyroid hemiagenesis
but further evaluation by computed tomography (CT) scan or nuclear scan should be
done to look for ectopic thyroid tissue rest. Here, we report a rare case of a 9-year-old
female having hemiagenesis of the right thyroid lobe and isthmus along with dual ectopic
thyroid tissue at prehyoid and infrahyoid regions of the neck presenting as a midline
neck swelling and subclinical hypothyroidism.
Keywords
Ectopic thyroid - subclinical hypothyroidism - thyroid hemiagenesis
