Year: 2018 | Month: September | Volume: 8 | Issue: 9 | Pages: 287-291
A Morphological Variation in Thyroid Gland- A Case Report
Vislavath Srikanth1, Jyoti Umarji1, Anju Thomas2
1Post Graduate Scholar, 2Associate Professor
Department of Rachana Sharir Sri Dharmasthala Manjunatheshwara College of Ayurveda and Hospital, Hassan, Karnataka, India.
Corresponding Author: Vislavath Srikanth
There are many variants in the size and shape of the thyroid gland, and the position of the embedded parathyroid glands. It is the largest endocrine gland located in the anterior neck, on the trachea just inferior to the larynx. The two right and left lobes are connected each other in the mid of the trachea by isthmus. Besides these two lateral lobes, sometimes an accessory thyroid lobe termed as Pyramidal Lobe, develops from isthmus or lateral lobes as a result of embryological remnant of the thyroglossal duct. Approximately 50% of thyroid glands may have pyramidal lobe. In rare cases, the Pyramidal Lobe may be the site of primary thyroid disease such as follicular carcinoma. The presence of the Pyramidal Lobe may be misinterpreted during a preoperative diagnosis on ultra-sonographic images. This case highlights about Pyramidal lobe with its position, extent, relationship to neighbouring structures and size. The knowledge of such morphological variation is important to perform safe and effective thyroid surgeries.
Key words: Thyroid gland, Thyroglossal duct, Pyramidal lobe, Variation