ANATOMICAL VARIATIONS OF THYROID GLAND AND ITS CLINICAL SIGNIFICANCE IN NORTH INDIAN POPULATION

Dr. Hussein Muktyaz, Dr.Yadav

Abstract

Thyroid gland lies deep to the sternothyroid and sternohyoid muscles, located anteriorly in the neck at the level of the 5th cervical to first thoracic vertebrae. Accessory nodules/ ectopic thyroid tissues are usually present at the embryonic origin of thyroid gland, at the foramen caecum, or on the lingual duct and thyroglossal tract within the tongue. The morphological variations are usually diagnosed incidentally during examination for other thyroid gland diseases; therefore the true incidence is uncertain. This study was structured to investigate the gross anatomical features of the thyroid gland in 56 cadavers (41 males and 15 females) from the North Indian population at Govt. Medical College, Ambedkar Nagar U.P. and S.R.M.S. Institute of Medical Sciences, Bareilly U.P. In our study we observed pyramidal lobe in (41.0%), levator glandular thyroideae (19.6%), absence of isthmus in (12.5%) and one case (3.5%) accessory thyroid tissue was found out of 56 cadavers. This study highlights the various developmental anomalies of the thyroid gland, which forms a cornerstone for safe and effective surgery.

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