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A rare case of triple thyroid ectopia.

Rahalkar M, Rahalkar A, Solav S - Indian J Endocrinol Metab (2014)

Bottom Line: Various anomalies of thyro-glossal duct have been described, in which the duct may form a cyst or may present as a solid nodule to form an ectopic gland.The ectopic gland can develop along the tract of the duct to give rise to ectopic lingual, sublingual (pre-hyoid) or sub-hyoid (pyramidal) gland, with or without normal pre-tracheal thyroid gland.There are a few reports of double ectopia of thyroid but triple ectopia of thyroid is extremely rare.We have come across a case of triple thyroid ectopia, i.e., thyroid tissue at three locations along the tract of descent of thyro-glossal duct on CT, which hast been rarely reported in the world literature, and hence this report.

View Article: PubMed Central - PubMed

Affiliation: Sahyadri Speciality Hospital, Pune, Maharashtra, India.

ABSTRACT
Various anomalies of thyro-glossal duct have been described, in which the duct may form a cyst or may present as a solid nodule to form an ectopic gland. The ectopic gland can develop along the tract of the duct to give rise to ectopic lingual, sublingual (pre-hyoid) or sub-hyoid (pyramidal) gland, with or without normal pre-tracheal thyroid gland.There are a few reports of double ectopia of thyroid but triple ectopia of thyroid is extremely rare. We have come across a case of triple thyroid ectopia, i.e., thyroid tissue at three locations along the tract of descent of thyro-glossal duct on CT, which hast been rarely reported in the world literature, and hence this report.

No MeSH data available.


Related in: MedlinePlus

Post contrast axial images showing three hyperdense, (a) enhancing nodules over the surface of posterior tongue measuring 9 × 12 mms in size. (b) second ectopic nodule at a lower level just anterosuperior to the body of hyoid bone measuring 11 × 9 mms in size (c) the third nodule below the hyoid bone and anterior to thyroid cartilage as an enlarged pyramidal lobe measuring 19 × 24 mms in size. (d) an axial image showing absent lateral lobes of thyroid with the result that carotid and jugular vessels are closely applied to trachea
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Figure 1: Post contrast axial images showing three hyperdense, (a) enhancing nodules over the surface of posterior tongue measuring 9 × 12 mms in size. (b) second ectopic nodule at a lower level just anterosuperior to the body of hyoid bone measuring 11 × 9 mms in size (c) the third nodule below the hyoid bone and anterior to thyroid cartilage as an enlarged pyramidal lobe measuring 19 × 24 mms in size. (d) an axial image showing absent lateral lobes of thyroid with the result that carotid and jugular vessels are closely applied to trachea

Mentions: CT revealed etopic thyroid nodules over the surface of posterior tongue, anterosuperior and close to body of hyoid bone and in sub-hyoid region as an enlarged pyramidal lobe. The normal thyroid lobes and isthmus were absent and as a result common carotid and internal jugular veins were closely applied to trachea without the interposing thyroid lobes [Figure 1]. All these were un-connected and separated by 5-8 mms in craniocaudal direction in the midline. These were hyperdense and showed enhancement (post contrast CT value measuring more than 200. A nuclear scan was performed using 3 millicuries of Technetium 99m pertechnetate administered intravenously. The static images were acquired at 20 minutes. The frontal projection showed two hot spots, a smaller and upper one between submandibular glands due to lingual ectopia and the lower larger one due to combined activity from pre-hyoid (sublingual) and pyramidal ectopic gland [Figure 2].


A rare case of triple thyroid ectopia.

Rahalkar M, Rahalkar A, Solav S - Indian J Endocrinol Metab (2014)

Post contrast axial images showing three hyperdense, (a) enhancing nodules over the surface of posterior tongue measuring 9 × 12 mms in size. (b) second ectopic nodule at a lower level just anterosuperior to the body of hyoid bone measuring 11 × 9 mms in size (c) the third nodule below the hyoid bone and anterior to thyroid cartilage as an enlarged pyramidal lobe measuring 19 × 24 mms in size. (d) an axial image showing absent lateral lobes of thyroid with the result that carotid and jugular vessels are closely applied to trachea
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3987280&req=5

Figure 1: Post contrast axial images showing three hyperdense, (a) enhancing nodules over the surface of posterior tongue measuring 9 × 12 mms in size. (b) second ectopic nodule at a lower level just anterosuperior to the body of hyoid bone measuring 11 × 9 mms in size (c) the third nodule below the hyoid bone and anterior to thyroid cartilage as an enlarged pyramidal lobe measuring 19 × 24 mms in size. (d) an axial image showing absent lateral lobes of thyroid with the result that carotid and jugular vessels are closely applied to trachea
Mentions: CT revealed etopic thyroid nodules over the surface of posterior tongue, anterosuperior and close to body of hyoid bone and in sub-hyoid region as an enlarged pyramidal lobe. The normal thyroid lobes and isthmus were absent and as a result common carotid and internal jugular veins were closely applied to trachea without the interposing thyroid lobes [Figure 1]. All these were un-connected and separated by 5-8 mms in craniocaudal direction in the midline. These were hyperdense and showed enhancement (post contrast CT value measuring more than 200. A nuclear scan was performed using 3 millicuries of Technetium 99m pertechnetate administered intravenously. The static images were acquired at 20 minutes. The frontal projection showed two hot spots, a smaller and upper one between submandibular glands due to lingual ectopia and the lower larger one due to combined activity from pre-hyoid (sublingual) and pyramidal ectopic gland [Figure 2].

Bottom Line: Various anomalies of thyro-glossal duct have been described, in which the duct may form a cyst or may present as a solid nodule to form an ectopic gland.The ectopic gland can develop along the tract of the duct to give rise to ectopic lingual, sublingual (pre-hyoid) or sub-hyoid (pyramidal) gland, with or without normal pre-tracheal thyroid gland.There are a few reports of double ectopia of thyroid but triple ectopia of thyroid is extremely rare.We have come across a case of triple thyroid ectopia, i.e., thyroid tissue at three locations along the tract of descent of thyro-glossal duct on CT, which hast been rarely reported in the world literature, and hence this report.

View Article: PubMed Central - PubMed

Affiliation: Sahyadri Speciality Hospital, Pune, Maharashtra, India.

ABSTRACT
Various anomalies of thyro-glossal duct have been described, in which the duct may form a cyst or may present as a solid nodule to form an ectopic gland. The ectopic gland can develop along the tract of the duct to give rise to ectopic lingual, sublingual (pre-hyoid) or sub-hyoid (pyramidal) gland, with or without normal pre-tracheal thyroid gland.There are a few reports of double ectopia of thyroid but triple ectopia of thyroid is extremely rare. We have come across a case of triple thyroid ectopia, i.e., thyroid tissue at three locations along the tract of descent of thyro-glossal duct on CT, which hast been rarely reported in the world literature, and hence this report.

No MeSH data available.


Related in: MedlinePlus