​Comparative Gross Anatomical and Biometrical Studies on Thyroid Gland of Buffalo, Sheep and Goat

2021 ◽  
Author(s):  
Amit Poonia ◽  
Anuradha Gupta ◽  
Varinder Uppal
Keyword(s):  
Thyroid Gland ◽  
Thyroid Cartilage ◽  
Tracheal Ring ◽  
Left Lobe ◽  
Biologically Active ◽  
Endocrine Gland ◽  
Water Displacement ◽  
Blood Calcium ◽  
Right Lobe ◽  
The Right

Background: The thyroid gland is vital endocrine gland which secretes three hormones i.e. thyroxin (T4), triiodothyronine (T3) and Calcitonin hormones. The thyroxin (T4) and triiodothyronine (T3) hormones are biologically active and are required for maintenance of normal levels of metabolic activity. The thyroid also produces calcitonin from the parafollicular cells which act directly on osteoclast to decrease the bone resorption which lower the blood calcium level. Deficient or excessive production of thyroid hormones may lead to serious pathological states with outward symptoms. Methods: The gross anatomical and biometrical studies were conducted on thyroid gland of buffalo, sheep and goat (n=12) collected immediately after slaughtering from slaughter house and local meat shop. The weight of thyroid gland was measured by weighing balance, volume by water displacement method, length and width of lateral lobes and isthmus by calibrated scale and inelastic thread and thickness of lateral lobes and isthmus was measured by digital vernier calliper. The data was analysed statistically. Result: The lateral lobes were roughly triangular in buffalo and elongated in sheep and oval in goat. The surfaces were granular and rough in buffalo but smooth in sheep and goat. It extended from thyroid cartilage to 2nd tracheal ring in buffalo, 1st to 6th tracheal ring in sheep and 1st to 7th tracheal ring in goat. The left lobe was larger than the right lobe in all the three species studied. The thyroid gland was biggest in buffalo followed by goat and smallest in sheep. The density of isthmus was more than the lobes in sheep and goat but not in buffalo.

scholarly journals Ultrasonographic and Scintigraphic Findings of Thyroid Hemiagenesis in a Child: Report of a Rare Male Case

2015 ◽  
Vol 2015 ◽  
pp. 1-3
Author(s):  
Ümit Yaşar Ayaz ◽  
Sevin Ayaz ◽  
Mehmet Ercüment Döğen ◽  
Arman Api
Keyword(s):  
Thyroid Gland ◽  
Thyroid Tissue ◽  
Invasive Procedure ◽  
Final Diagnosis ◽  
Left Lobe ◽  
Current Status ◽  
Complementary Method ◽  
Thyroid Hemiagenesis ◽  
Right Lobe ◽  
The Right

Thyroid hemiagenesis is a rare congenital anomaly in which one lobe of thyroid gland fails to develop. It is much rarer in males. There is a higher incidence of associated thyroid disorders in patients with thyroid hemiagenesis; therefore early and prompt diagnosis is important for children. We present the ultrasonographic and scintigraphic findings of thyroid hemiagenesis in an eight-year-old-boy. On ultrasonography (US), left lobe of the thyroid gland could not be demonstrated and the right lobe showed minimal hyperplasia. Its echogenicity was normal and no nodule was seen. On thyroid scintigraphy, left lobe of thyroid gland or any ectopic thyroid tissue could not be demonstrated, while the right lobe showed minimal hyperplasia. Without performing any invasive procedure, we enrolled the child in a follow-up program with the guidance of US and scintigraphy, which were effective both in making the final diagnosis of thyroid hemiagenesis and in evaluating the current status of the present thyroid tissue. In conclusion, if only one thyroid lobe is detected in a pediatric case initially with US or scintigraphy, the diagnosis of thyroid hemiagenesis should be suggested and, before any unnecessary or invasive attempt, the other complementary method (scintigraphy/US) should be performed.

scholarly journals THE HISTOLOGICAL CHANGES IN THE THYROID GLAND OF THE RABBIT FOLLOWING LOBECTOMY

1925 ◽  
Vol 42 (2) ◽  
pp. 193-200 ◽  
Author(s):  
J. Hamilton Crawford ◽  
J. N. J. Hartley
Keyword(s):  
Thyroid Gland ◽  
Epithelial Cells ◽  
Left Lobe ◽  
Compensatory Hypertrophy ◽  
The Other ◽  
Histological Changes ◽  
Right Lobe ◽  
Cervical Sympathetic ◽  
The Right

1. In a series of rabbits the changes which took place in the histology of the left lobe of the thyroid gland after excision of the right lobe have been studied at varied intervals of time. 2 days after the removal of one lobe the other lobe showed a slightly increased colloid content, an increased vacuolation of the colloid, and a slight increase in the size of the epithelial cells. At the end of a week the vesicles were greatly increased in size, distended with colloid, and the epithelial cells were flattened, while after 3 to 4 months signs of compensatory hypertrophy were present. 2. The changes observed were uninfluenced by division of the vagus or cervical sympathetic.

Scintiscan Characteristics of Normal Thyroid Gland in a Region of Known Iodine Intake

1976 ◽  
Vol 15 (02) ◽  
pp. 60-62
Author(s):  
Lucille E. Snoop ◽  
G. T. Krishnamurthy
Keyword(s):  
Thyroid Gland ◽  
Surface Area ◽  
Iodine Intake ◽  
Left Lobe ◽  
Morphological Features ◽  
Poor Correlation ◽  
Normal Thyroid ◽  
Right Lobe ◽  
The Mean ◽  
The Right

SummaryMorphological features of a normal thyroid gland in a geographical region where the daily iodine intake is about 1 mg are established. The mean weight of the thyroid gland is 31.3 gm with a range from 19 to 43 gm. Oblique length of the right lobe is 5.0 cm and that of the left lobe 4.8 cm. The surface area of the right and left lobes is 9.7 and 9.1 cm2, respectively. The weight of the thyroid gland calculated on the basis of the scan obtained with 99mTcO4 is quite variable and shows poor correlation (γ = 0.40) with the weight obtained on the basis of I-131 scan. It is suggested that the criteria of normalcy be established regionally based on iodine intake, and that an isotope of iodine be used in calculating the weight of thyroid gland for dosimetry purposes.

scholarly journals Follow-up of a case of subacute thyroiditis with uncommon thyroid 99mTc uptake

2013 ◽  
Vol 57 (8) ◽  
pp. 659-662 ◽  
Author(s):  
Zhe Zhang ◽  
Chengjiang Li
Keyword(s):  
Thyroid Gland ◽  
Interstitial Fibrosis ◽  
Left Lobe ◽  
Subacute Thyroiditis ◽  
Short Course ◽  
Right Lobe ◽  
The Right ◽  
Inflammatory Changes ◽  
Cellular Destruction

Thyroidal 99mTc uptake in the acute thyrotoxic phase of subacute thyroiditis (SAT) is always inhibited. However, a patient with SAT had signs in the right-side thyroid gland with transient thyrotoxicosis and slightly high 99mTc uptake levels in the right lobe, low 99mTc uptake in the left lobe, and normal overall uptake. Histological examination showed cellular destruction and granulomatous inflammatory changes in the right lobe, with marked interstitial fibrosis in the left lobe. The patient was thyrotrophin-receptor antibody (TRAb) positive. After a short course of prednisolone, SAT-like symptoms and signs improved. TRAb-positivity resolved spontaneously after 22 months, and TSH levels were slightly low for 22 months. Levels then kept normal in the following four years. In conclusion, high 99mTc uptake by the right lobe was due to the combined effects of TRAb and left thyroid gland fibrosis.

scholarly journals Morphometry, Topography and Arterial Supply of the Thyroid Gland in Brazilian Shorthair Cats

2021 ◽  
Vol 49 ◽  
Author(s):  
Anieli Vidal Stocco ◽  
Shirley Viana Peçanha ◽  
Renata Medeiros Nascimento ◽  
Carlos Augusto dos Santos-Sousa ◽  
Paulo Souza Júnior ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Linear Correlation ◽  
Cricoid Cartilage ◽  
Tracheal Ring ◽  
Left Lobe ◽  
Arterial Supply ◽  
Thyroid Lobe ◽  
Significant Difference ◽  
The Common ◽  
The Right

 Background: Thyroid gland diseases are the most common endocrinopathies in feline practice. Diagnosis and surgical treatment must base on solid anatomical knowledge about the gland size, localization, and blood supply. However, some textbooks provide a general anatomical description of the thyroid gland of domestic carnivores. Thus, specific details of the feline gland are missing. The present study aimed to investigate the dimensions, topography, and arterial supply of the thyroid gland in Brazilian shorthair cats and, therefore, provide additional data to diagnose and treat feline thyroid diseases.Materials, Methods & Results: Thirty Brazilian shorthair cats formalin-fixed cadavers (15 male and 15 female) were injected with red-stained latex solution by a canula in the thoracic aorta. The necropsy unit of the Rural Federal University of Rio de Janeiro donated the specimens. The study included only adult animals with no history of thyroid disease. After the fixation period, the cadavers were dissected to investigate the measurements (length, width at cranial and caudal poles, and thickness), topography, and in situ arterial supply of the thyroid lobes. The mean measurements of the length, cranial pole width, caudal pole width, and thickness in the right lobe were 19.39 ± 3.10 mm, 5.36 ± 1.40 mm, 3.67 ± 0.93 mm, and 1.30 ± 0.29 mm, respectively; and 20.29 ± 3.35 mm, 4.85 ± 1.58 mm, 3.88 ± 0.91 mm, 1.64 ± 0.65 mm in the left lobe, respectively. There were no statistical differences (P > 0.05) in the comparison of the measures between sexes or antimers (sides). Pearson's linear correlation detected a positive, moderate (r = 0.55), and significant (P < 0.05) correlation between the right and left lobe lengths. In 70% of the cats, both left and right lobes had the cranial poles located at the same level. Typically, the lobes extended between the first to the eighth tracheal ring. However, the cranial pole of some lobes located as cranially as the cricoid cartilage level, and the caudal pole as caudally as the 12th tracheal ring. Fifty-six percent of the cats had a ventrally located isthmus. In all the sampling, one single thyroid artery emerged as a branch of the common carotid artery and provided branches directly to the thyroid lobe, isthmus and the adjacent muscles and esophagus.Discussion: Besides establishing average dimensions of normal thyroid lobes in Brazilian shorthair cats, this study detected no significant difference between the average measurements of right and left lobes. Also, a positive linear correlation between the length and width of the right and left lobes became evident. Therefore, the practitioner must consider suspicious any length asymmetry between right and left thyroid lobes until further endocrine test proves otherwise. Most of the cats had the right and left thyroid lobe positioned at the same transversal level; however, positional asymmetries are not uncommon. Unlike dogs, Brazilian shorthair cats have only a single artery to supply each lobe: the thyroid artery. In a feline thyroidectomy, the surgeon must avoid blindly ligating the thyroid artery since this vessel also provided numerous branches to adjacent muscles and esophagus. In a bilateral thyroidectomy, the ventral region between lobes should be thoroughly inspected for the common presence of an isthmus. Sometimes, the surgeon may need to extend the incision caudally beyond the 12th tracheal ring level to visualize the gland tissue entirely.Keywords: endocrinology, feline anatomy, morphometrics, thyroidectomy.

scholarly journals Anatomical and histological study of thyroid gland in female local donkeys (Eqws africanus asinus) at Basrah city

2014 ◽  
Vol 13 (1) ◽  
pp. 85
Author(s):  
S. A. Ali
Keyword(s):  
Thyroid Gland ◽  
Histological Study ◽  
Left Lobe ◽  
The Body ◽  
Follicular Epithelium ◽  
Endocrine Gland ◽  
Connective Tissue Capsule ◽  
Length Width ◽  
Right Lobe ◽  
Tissue Capsule

Thyroid gland is an endocrine gland that influences many organs of the body and play an important role in the metabolism of animals and another species. Thyroid gland of female donkeys was situated in the interior part of neck inferior to the larynx. It consist of two lobes were connected by isthmus. The mean and SD of length, width, and thickness in right lobe was 25.66±0.41mm, 21.31±0.59mm, 8.51±0.009mm, while in the left lobe it was 23.15±o.16 mm. 19.65±o.22mm, 8.42±0.19mm respectively. Histologically, the thyroid gland surrounded by connective tissue capsule and contained follicles, follicular epithelium, and parafollicular cells. The follicles filled with colloid.

scholarly journals Cadaver Study of the Extension of the Lobes of the Thyroid Gland

1970 ◽  
Vol 19 (1) ◽  
pp. 47-50
Author(s):  
ASM Nurunnabi ◽  
S Ara ◽  
R Ahmed ◽  
S Kishwara ◽  
S Mahbub ◽  
...  
Keyword(s):  
Thyroid Gland ◽  
Thyroid Cartilage ◽  
Cadaver Study ◽  
Tracheal Ring ◽  
Human Thyroid ◽  
Medical College ◽  
Key Words Thyroid Gland ◽  
Dead Bodies ◽  
The Right ◽  
Inferior Limit

Context: The present study was designed to see the extension i.e. the superior and the inferior limits of the right and the left lobes of the thyroid gland of Bangladeshi people and compare with the previous studies. Study design: Descriptive type of study. Place and period of the study: Department of Anatomy, Dhaka Medical College, Dhaka from January to December 2008. Materials: The present study was performed on 60 post mortem human thyroid gland (39 of male and 21 of female) of unclaimed dead bodies which were in the morgue under examination in the Department of Forensic Medicine, Dhaka Medical College, Dhaka. Methods: The samples were collected from the dead bodies by ‘block dissection' and upper and lower limits of the lobes of the thyroid gland were observed in situ and recorded. Results: The superior limit of the right and left lobes of the thyroid glands reached above the midpoint of the lamina of the thyroid cartilage in 16.67% and 8.33% cases and was found at the level of that midpoint in 41.67% and 43.33% of cases respectively. 41.67% on the right and 48.33% on the left could not reach that midpoint of the thyroid cartilage. The inferior limit of the right and left lobes of the thyroid gland reached up to the 5th tracheal ring in 63.33% and 60% cases respectively and inferiorly up to the 6th tracheal ring in 36.67% and 40% cases respectively. Key words: Thyroid gland; extension of lobes; superior and inferior limit. DOI: 10.3329/jdmc.v19i1.6252 J Dhaka Med Coll. 2010; 19(1) : 47-50.

scholarly journals Determination of Relationship between Thyroid Gland Volume and Anthropometric Indices

2019 ◽  
pp. 1-12
Author(s):  
A. J. Salaam ◽  
S. M. Danjem ◽  
A. A. Salaam ◽  
H. A. Angba ◽  
P. O. Ibinaiye
Keyword(s):  
Thyroid Gland ◽  
Thyroid Volume ◽  
Left Lobe ◽  
The Body ◽  
Gland Volume ◽  
Thyroid Gland Volume ◽  
Right Lobe ◽  
Males And Females ◽  
The Mean ◽  
The Right

Objective: To sonographically determine the thyroid gland volume in normal adults in Jos University Teaching Hospital, as well as how it relates to anthropometric factors. Background: The thyroid gland is one of the largest endocrine glands in the body weighing about 10-25g.  It regulates the rate of metabolism and controls the growth and rate of function of many other systems in the body. These it does, by producing thyroid hormones, principally thyroxine (T4) and triiodothyronine (T3). The accurate estimation of the size of the thyroid is very important for the evaluation and management of thyroid disorders. Thus, knowing the normal size in a geographic location would form a baseline for detecting abnormalities. Ultrasonography is a cheap, readily available, easy to perform and non-invasive method to image the thyroid gland, hence its use in this resource-limited setting. Methods: This is a cross-sectional study of sonographic measurement of thyroid gland volume on 400 normal (healthy) adults in Jos, Plateau State, Northern part of Nigeria. All examinations were performed using LOGIC 5, a real-time ultrasound machine using a 10MHZ linear transducer and ultrasound transmission gel to act as a coupling gel. Measurements of each lobe and isthmus were obtained in longitudinal (length), transverse (width) and depth(breath) in centimetres (cm). Blood samples were taken for thyroid function tests. The weight and heights were obtained. The data obtained were statistically analyzed using SPSS software version 17. The results were presented in forms of tables, graphs and chart. Results: The mean thyroid volume for males   6.03 cm3±2.22 was higher than that of females 5.62 cm3±2.14. The mean right lobe volume (RLV) was 3.09 cm3±1.47 and that of males and females were 3.16 cm3 ±1.34 and 3.04 cm3 ±1.55 respectively. The mean left lobe volume (LLV) was 2.69 cm3 ± 1.37 and that of males and females were 2.89 cm3±1.32 and 2.57 cm3±1.39 respectively. The right lobe volume was significantly greater than the left lobe(p=0.000). The total mean isthmus volume was 0.27 cm3±0.31. The mean isthmus volume in males 0.3±0.28 is significantly higher than that of females 0.24±0.23 (p=0.025). The BMI increases in females with increasing age. BMI and BSA are higher in males. Conclusion: The volume obtained in this study was slightly lower than those reported by previous studies in Nigerian adults. The right lobe volume was higher than that of the left and the volume was higher in males compared to females. Anthropometric parameters were noted to affect the thyroid volume.

scholarly journals Primary synovial sarcoma thyroid: an unusual presentation

2020 ◽  
Vol 10 (2) ◽  
pp. 1776-1778
Author(s):  
Pallavi Srivastava ◽  
Nidhi Anand ◽  
Nuzhat Husain
Keyword(s):  
Thyroid Gland ◽  
Synovial Sarcoma ◽  
Neck Mass ◽  
Left Lobe ◽  
Treatment Regimens ◽  
Immunohistochemical Markers ◽  
Positive Expression ◽  
Right Lobe ◽  
The Right ◽  
Enhancer Of Split

Primary Synovial sarcoma of the thyroid gland is a rare sarcoma. We report a case of synovial sarcoma of the thyroid gland in a 2-yr-old boy presenting with a palpable progressively increasing neck mass, high resolution ultrasound revealed a heterogeneous lesion measuring 5 x 4 cm identified in the right lobe compressing the left lobe. A total thyroidectomy was performed and grossly both the lobes were involved. Histologically, the tumor was a biphasic synovial sarcoma which was confirmed by immunohistochemical markers showing positive expression for vimentin, Epithelial membrane antigen &Transducin-like enhancer of split-1. This is an unusual location for the occurrence of primary synovial sarcoma and aggressive nature the early diagnosis is difficult, and no definite treatment regimens are being defined due to the rarity of neoplasm.

scholarly journals Thyroid Carcinoma on the Side of the Absent Lobe in a Patient with Thyroid Hemiagenesis

2017 ◽  
Vol 2017 ◽  
pp. 1-5
Author(s):  
Hiroki Sato ◽  
Kiyoaki Tsukahara ◽  
Ray Motohashi ◽  
Midori Wakiya ◽  
Hiromi Serizawa ◽  
...  
Keyword(s):  
Thyroid Carcinoma ◽  
Papillary Carcinoma ◽  
Thyroid Tissue ◽  
Needle Aspiration ◽  
Left Lobe ◽  
Thyroid Hemiagenesis ◽  
Poorly Differentiated ◽  
Node Metastases ◽  
Right Lobe ◽  
The Right

Background. Thyroid carcinoma complicated by hemiagenesis is very rare, and previous reports have not described this cancer on the side of the absent lobe. Methods and Results. We report the case of a 64-year-old woman in whom left thyroid hemiagenesis was discovered incidentally during investigations of abnormal sensation during swallowing. A tumorous 1.4 cm lesion was also found on the side of the absent lobe, left of the isthmus. Fine-needle aspiration biopsy revealed class V papillary carcinoma, but no lymph node metastases. Total thyroidectomy was performed for stage cT1bN0M0 carcinoma. Histopathology revealed normal thyroid tissues in the right lobe and isthmus, while the left lobe was absent. The mostly papillary carcinoma was adjacent to the truncated thyroid tissue, with a portion histologically consistent with poorly differentiated carcinoma. Conclusions. All previously reported cases of thyroid cancer complicated by hemiagenesis have represented carcinoma occurring within the present lobe. This case is extremely rare.

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