International Journal of Anatomy and Research

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Type of Article: Original Research

Year: 2016 | Volume 4 | Issue 1 | Page No. 1892-1895

Date of Publication: 29-02-2016



Dhanalakshmi V *1, Manoharan C 2, Rajesh R 3, Suba Ananthi K 4.

*1 Senior Assistant Professor, Department of Anatomy, Govt. Thoothukudi Medical College, Thoothukudi, Tamilnadu, India.
*2 Associate Professor, Department of Forensic Medicine, Government KanyaKumari Medical College, Tamilnadu, India.
3 Professor, Department of Forensic Medicine, Government Thoothukudi Medical College, Thoothukudi, Tamilnadu, India.
4 Associate Professor, Department of Anatomy, Indhira Gandhi Institute of Medical Sciences, Pondicherry. India.

Address: Dr. Dhanalakshmi V, M.D (Anatomy), Senior Assistant Professor, Department of Anatomy, Govt. Thoothukudi Medical College, 3rd Mile, Kamaraj Nagar, Thoothukudi, Tamilnadu, India 628008


Introduction: Lungs are essential organs of respiration. Variations in lobes and fissures of lungs are clinically significant. Awareness of these variations is essential during segmental resections of lung. This study is conducted to observe the completeness of fissures, presence of accessory fissures and accessory lobes of lungs.
Materials and Methods: 100 lungs (50 right and 50 left) from embalmed cadavers and autopsied bodies were studied for the presence of normal fissures, its variations including number of lobes, accessory lobes and accessory fissures.
Results: The right lungs had complete oblique fissure and complete horizontal fissure in   68% and 30% respectively. The left lungs had complete oblique fissure 62 %. Oblique fissure was incomplete in 32 % of right lung and in 38% of left lung. Horizontal fissure was incomplete in 52 % and absent in 18%. 73.3% of incomplete oblique fissure of right lung showed incompleteness posteriorly. In the left lung oblique fissure showed incompleteness anteriorly in 26.3%, in the middle in 21.1% and posteriorly in 52.6%. Horizontal fissure of right lung was incomplete anteriorly in 96.2%.
Accessory fissures were present in 4 specimens (8%) of right lungs and in 1 specimen (2%) of left lung and accessory lobes were present in 2 specimens (4%) of right lungs.
Conclusion: The fissures in normal lungs enhance uniform expansion of lobes. Absence of fissures can affect the expansion of the lungs. Incomplete fissures may also alter the spread of disease within the lung. Knowledge of accessory fissure and variations in lobes and fissures of lung are important as it may mislead while interpreting in radiology.
Key words: Accessory, Fissure, Lobes, Lung, Variation.


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Dhanalakshmi V, Manoharan C, Rajesh R, Suba Ananthi K. MORPHOLOGICAL STUDY OF FISSURES AND LOBES OF LUNGS. Int J Anat Res 2016;4(1):1892-1895. DOI: 10.16965/ijar.2016.104




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