scholarly journals Double Pyramidal Lobe of the Thyroid Gland

2018 ◽  
Vol 35 (4) ◽  
pp. 350-351 ◽  
Author(s):  
Emin Gürleyik
Keyword(s):  
2017 ◽  
pp. 19-23
Author(s):  
Muhammad Iqbal ◽  
Muhammad Naeem ◽  
Muhammad Imran ◽  
Muhammad Akhtar

2014 ◽  
Vol 6 (3) ◽  
pp. 110-112 ◽  
Author(s):  
R Fernando ◽  
Anuradha Rajapaksha ◽  
Narada Ranasinghe ◽  
Duminda Gunawardana

ABSTRACT Thyroid gland has three main embryological remnants: pyramidal lobe, tubercle of Zuckerkandl and thyrothymic remnants. They are commonly missed or misidentified during dissection. Each of these remnants plays a critical role in thyroidectomy as they help to identify the relevant anatomy and therefore help prevent accidental damage to other structures in close proximity during dissection. In this article, we describe the current knowledge of each of these remnants and their significance in thyroidectomy. Conclusion It is important that all these remnants are objectively looked for and removed during surgery in order to prevent recurrences. How to cite this article Fernando R, Rajapaksha A, Ranasinghe N, Gunawardana D. Embryological Remnants of the Thyroid Gland and their Significance in Thyroidectomy. World J Endoc Surg 2014;6(3):110-112.


2015 ◽  
Vol 05 (01) ◽  
pp. 086-087
Author(s):  
Raghavendra A Y. ◽  
Vishal Kumar ◽  
Vinay Kumar V. ◽  
Harsha C R.

AbstractThe thyroid gland is an important and easily approachable endocrine gland, situated in the lower part of anterior aspect of neck. The Levator glandulae thyroidea (LGT) is a fibro-musculo-glandular band. It is usually present on the left side connecting the pyramidal lobe of thyroid gland to the hyoid bone. During the routine dissection of neck it was observed that the LGT was present on the right side of midline of neck extending from pyramidal lobe of the right side of isthmus of thyroid gland to the inferior border of hyoid bone. It was muscular throughout with 6.5cm in length, 1.5cm breadth and 1.75mm in its thickness. This is a rare variation in the morphology and situation of LGT observed for the first time. The presence of LGT and its anatomical variations gain importance in the pathologies related to thyroid gland and their treatment modalities.


2019 ◽  
Vol 10 (2) ◽  
pp. 385-388 ◽  
Author(s):  
Arsheed Hussain Hakeem ◽  
Imtiyaz Hussain Hakeem ◽  
Hassaan Javaid ◽  
Fozia Jeelani Wani

2021 ◽  
Vol 73 (1) ◽  
pp. 73-81
Author(s):  
Bojan Milojevic ◽  
Vladan Zivaljevic ◽  
Ivan Paunovic ◽  
Aleksandar Malikovic

We investigated two structures that are in close association with the pyramidal lobe of the thyroid gland. Our investigation was performed using microdissection and histological examination in 106 human postmortem specimens. The first investigated structure was identified as the thyroid fibrous band that was present in 28.3% of cases. This band was always associated with the pyramidal lobe (which was significantly longer and thicker when associated with this band) and it had a constant hyo-pyramidal extension; it was located close to the midsagittal plane and predominantly composed of dense irregular connective tissue. The second investigated structure was the levator glandulae thyroideae muscle, which was associated with the pyramidal lobe in only 13.6% of cases. This muscle had a double extension, hyo-pyramidal and laryngo-pyramidal, located farther from the midsagittal plane, it was longer and thinner than the thyroid fibrous band and predominantly composed of striated muscle fibers. We confirmed our hypothesis that the thyroid fibrous band, which may be considered as the partial fibrous remnant of the thyroglossal duct and levator glandulae thyroideae, and which may be considered as infrahyoid or laryngeal muscle, are two different structures of the thyroid gland.


Clinically, a diffuse, firm goiter with pyramidal lobe enlargement, and without signs of thyrotoxicosis, should suggest the diagnosis of Hashimoto's thyroiditis (HT). The association of goiter with hypothyroidism is almost diagnostic. The thyroid stimulating hormone (TSH) is the sensitive marker of hypothyroidism and diagnosis of subclinical hypothyroidism. Thyroid perioxidase antibodies (TPO-Ab) and, less frequently, thyroglobulin antibodies (Tg-Ab) are elevated in the serum of patients with HT. Ultrasound may display an enlarged gland with normal texture, focal, or diffuse glandular enlargement with coarse, heterogenous, and hypo-echoic pattern, or a suggestion of multiple ill-defined micro-nodules. Color Doppler shows extensive hyper-vascularity. Histologically, the thyroid gland shows diffuse lymphocytic and plasma cell infiltration with formation of lymphoid follicles. Atrophy of the thyroid parenchyma is usually evident. It also reveals scant colloid, and a few epithelial cells, which may show Hurthle cell change. This chapter explores the diagnosis of Hashimoto's disease.


1970 ◽  
Vol 18 (2) ◽  
pp. 120-123 ◽  
Author(s):  
M Begum ◽  
M Khatun ◽  
S Kishwara ◽  
R Ahmed ◽  
J Naushaba

Background: The pyramidal lobe is also called the 3rd lobe of the thyroid gland which ascends toward the hyroid bone from the isthmus or the adjacent part of either lobe. A fibrous or fibromascular band the levetor glandulae thyroideae occasionally extends upwards from the apex of the pyramidal lobe to the body of the hyoid bone. Any pathology of thyroid gland involves this lobe, some pathology started from here or recurrence may occur from this lobe. Anatomical knowledge about pyramidal lobe is essential for surgeons, endocrinologists, pathologists and sonologists for proper diagnosis and management of thyroid diseases. Study design: Cross sectional descriptive type of study. Place and period of study: Department of Anatomy, Sir Salimullah Medical College, Dhaka. Study period was from July 2003 to June 2004. Materials: The study was done by examining 60 post mortem human thyroid glands, age ranging from 7 to 67 years. The glands were collected from unclaimed dead bodies autopsied in the morgue of Dhaka Medical College and Sir Salimullah Medical College under the department of Forensic Medicine. Methods: The collected sample were grouped in to three age groups including group A(0-20 years), group B (21-50 years) and group C (>50 years). The presence, variation of position of the pyramidal lobe and its relation with levator glandulae thyroideae were studied. Result: The pyramidal lobe was found in 16 of 60 thyroid glands in different age groups and situated more on the left side than the right. In 9 cases, levator glandulae thyroideae were found. All extended from the apex of the pyramidal lobe to the body of the hyoid bone. Key words: Pyramidal lobe; levator glandulae thyroideae; thyroid gland. DOI: 10.3329/jdmc.v18i2.6270 J Dhaka Med Coll. 2009; 18(2) : 120-123


Author(s):  
Theodosios S. Papavramidis ◽  
Anna Zisi ◽  
Sofia-Eleni Tzorakoleftheraki ◽  
Triantafyllia Koletsa ◽  
Ioannis Pliakos ◽  
...  

2012 ◽  
Vol 22 (2) ◽  
pp. 83-87
Author(s):  
Fakhrul Amin Mohammad Hasanul Banna ◽  
Zakia Sultana ◽  
Mansur Khalil ◽  
Jahan Ara Begum ◽  
Manowara Begum ◽  
...  

Back Ground: The thyroid is a brownish red, highly vascular earliest endocrine glandular structure appears in mammal. The size of thyroid gland varies considerably with age, sex, physiologic state, race and geographical location. It is larger and heavier in mature females than in males, and it hypertrophies during menstruation and pregnancy. Diseases of thyroid may need surgical intervention. During thyroid surgery, there is every possibility of occurrence of haemorrhage and recurrent laryngeal nerve injury. So this study is to carry out the macroscopic and microscopic architecture of thyroid gland of different age and sex groups in Bangladeshi people to establish a normal standard. This study will also help in minimizing complications of thyroid surgery and tracheostomy.Study design: Mainly descriptive cross-sectional study with an analytic component.Place and period of study: Department of Anatomy, Sylhet M. A. G. Osmani Medical College, Sylhet, from 1st July 2006 to 30th June 2007.Materials: The study was carried out on 54 autopsied human thyroid glands aged 5 to 65 years. Thyroid glands were collected from unclaimed dead bodies autopsied in morgue of Sylhet M. A. G. Osmani Medical College, Sylhet.Methods: The collected specimens were divided into age group A (10 years and below), group B (11 to 20 years), group C (21 to 30 years), group D (31 to 40 years), group E (41 to 50 years) and group F (51years and above). All specimens were examined morphologically by fine dissection method.Result: Pyramidal lobe and levator glandulae thyroideae were present in 37.04% and 59.26% cases respectively and were situated to the left side of midline in most of the cases. In most of the cases levator glandulae thyroideae had association with apex of pyramidal lobe to the body of the hyoid bone.Conclusion: From observation and results it reached conclusion that the present study will help to increase the information pool on the anatomy of thyroid gland of Bangladeshi people. To establish a normal standard for Bangladeshi people, further studies with large samples from different zones including goitre endemic zones of the country are suggested. Medicine Today 2010 Volume 22 Number 02 Page 83-87 DOI: http://dx.doi.org/10.3329/medtoday.v22i2.12440


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