A pyramidal lobe is an anomaly where a third thyroid gland extends ________.

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Multiple Choice

A pyramidal lobe is an anomaly where a third thyroid gland extends ________.

A pyramidal lobe is a superior extension of thyroid tissue arising from the anterior isthmus toward the hyoid bone, due to persistence of the thyroglossal duct during the gland’s descent. This upward, midline extension explains why the direction is superior. It’s a normal anatomic variant and may contain functional thyroid tissue; it is not an inferior, medial, or lateral extension.

A pyramidal lobe is a superior extension of thyroid tissue arising from the anterior isthmus toward the hyoid bone, due to persistence of the thyroglossal duct during the gland’s descent. This upward, midline extension explains why the direction is superior. It’s a normal anatomic variant and may contain functional thyroid tissue; it is not an inferior, medial, or lateral extension.

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