Abstract :
Introduction: Congenital anomalies are very uncommon in thyroid gland and dual ectopic thyroid (DET)is
even more rare entity. Till date only about 30 cases of DET have been reported in the world literature,
majority of them being in the anterior midline neck region:
Case Report: Here we report a case of a seven year old male child with dual ectopic thyroid in lingual
and subhyoid regions with mild hypothyroidism. The diagnosis of DET was based on CT scan findings
and FNAC of the subhyoid swelling. The normal thyroid gland was not visualized in the neck on CT scan.
The microscopyof the aspirate revealed abundant thick and thin colloid with normal thyroid follicular cells
arranged in small sheets and clusters along with cyst macrophages confirming the swelling to be of thyroid
origin.
Conclusion: Ectopic thyroid tissue is a rare entity and dual ectopic thyroid with absence of thyroid gland
in its normal location is extremely rare. Clinical, radiological and cytological analysis helps in arriving at
a diagnosis.
Keyword :
Dual ectopic thyroid, ETT, CT scan, FNAC, DET, TDC.