Possible Variations of Thyroid Gland: A Detailed Cadaveric Study
Introduction: The knowledge regarding the identification of anatomical variations of thyroid gland is very important in formulating planned surgical approaches to the thyroid gland and in alerting the surgeons to prevent accidental injuries to the vital anatomical structures in this area. Aim:...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
JCDR Research and Publications Pvt. Ltd.
2018-04-01
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| Series: | International Journal of Anatomy Radiology and Surgery |
| Subjects: | |
| Online Access: | http://www.ijars.net/article_fulltext.asp?issn=0973-709x&year=2018&month=April&volume=7&issue=2&page=AO09-AO13&id=2375 |
| Summary: | Introduction: The knowledge regarding the identification
of anatomical variations of thyroid gland is very important
in formulating planned surgical approaches to the thyroid
gland and in alerting the surgeons to prevent accidental
injuries to the vital anatomical structures in this area.
Aim: To find out the possible anatomical variations and
morphometric parameters of the entire thyroid gland.
Materials and Methods: A total of 60 thyroid glands were
studied in the cadavers by routine neck dissection method.
The morphological variations, arterial supply variations
and the morphometric parameters of length, breadth, and
thickness were observed.
Results: Out of 60 thyroid glands we observed one
thyrotrachealis biceps muscle. Isthmus was absent in 5
(8.3%) of cases, pyramidal lobe was present in 8 (13.3%)
of cases, levator glandulae thyroidae was in 3 (5%) of
cases , the left STA from LCC in 3 (5%) of cases, left STA
bifurcation level in 2 (3.3%) of cases, right STA from right
ECA lateral side in 1 (1.6%) of cases, arteria thyroidae ima
from arch of aorta was in 1 (1.6%) of cases, the minimum
and maximum length of the right lobe was 1.9 cm, 6.9 cm
and for the left lobe was 2.1 cm, 5.8 cm, the minimum and
maximum breadth of the right lobe was 0.94 cm, 3.72 cm
and for the left lobe was 1.2 cm, 3.5 cm, the minimum and
maximum thickness of the right lobe was 0.87cm,2.9cm
and for the left lobe was 0.7 cm, 2.5 cm, the average weight
of the thyroid gland was 14.4 gm.
Conclusion: Thyroid gland in a cadaver caught our
attention as it had multiple variations. The implications
of such variations are relevant for academic and clinical
purposes. |
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| ISSN: | 2277-8543 2455-6874 |