Document Detail

The thyroid gland and its variations: a cadaveric study.
MedLine Citation:
PMID:  20235050     Owner:  NLM     Status:  MEDLINE    
The size and shape of the thyroid gland is subject to much variation, as stated by Wood Jones. Literature is replete with a large number of variations of the gland. By utilizing various techniques like gross dissection, histology, developmental anatomy, and recently thyroid scans and scintigraphy, some common and certain rare anomalies of the thyroid with their possible developmental bases are described in the literature. An attempt has been made to study the thyroid glands in 90 male cadavers available in our department, with ages ranging from 60 to 75 years with mean height of 5'4". The parameters that were observed included the length and width of lobes, presence or absence of pyramidal lobe, levator glandulae thyroideae, and isthmus with its relation to the tracheal rings. The average length of the right lobe was 4.32 cm, and the left lobe was 4.22 cm. The thickness of the right lobe was 1.13 cm, and the left lobe was 1.18 cm. Pyramidal lobe was present in 34 (37.77%) cases, frequently arising from the left lobe, while the levator glandulae thyroideae was present in 27 (30%) instances, mostly attached superiorly to the body of the hyoid bone. The isthmus was absent in 15 (16.66%) cases; its relation with the tracheal rings greatly varied from the cricoid cartilage to the fourth tracheal ring. Knowledge of variations of the thyroid assumes significance as this has relevance in the resection of thyroid, tumours, and tracheostomy.
S D Joshi; S S Joshi; S R Daimi; S A Athavale
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Folia morphologica     Volume:  69     ISSN:  0015-5659     ISO Abbreviation:  Folia Morphol. (Warsz)     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-03-17     Completed Date:  2010-07-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374620     Medline TA:  Folia Morphol (Warsz)     Country:  Poland    
Other Details:
Languages:  eng     Pagination:  47-50     Citation Subset:  IM    
Department of Anatomy, Rural Medical College, PIMS, Loni, Dist-Ahmednagar, Maharashtra, India.
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MeSH Terms
Middle Aged
Organ Size
Thyroid Gland / anatomy & histology*,  physiology
Trachea / anatomy & histology*,  physiology

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