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Anatomical study of fissures and lobes of lung with their surgical and imaging importance

Authors:Kranti Kumar Gour, Dr.Natwar Lal Agrawal, Nidhi Agrawal, Mayura Setiya
Int J Biol Med Res. 2021; 12(2): 7301-7305  |  PDF File


Background: Lungs are the primary organs of respiration located on either side of the heart in thoracic cavity and are suspended from the mediastinum by the lung root which is a collection of structures entering and leaving the lungs. For the purpose or intention of uniform expansion, the whole lung is divided into lobes by means of fissures which form an elemental part of the lungs. Sound knowledge of the disposition of fissures of the lungs directs the cardiothoracic surgeons performing segmental lung resections and lobectomies to avoid any untoward situation during surgery and also minimize the postoperative complications. Aims of the study: This cadaveric study was done to show the anatomical variations in fissures and lobes of lung to help surgeons and radiologist in clinical interpretations. Materials and methods: The present observational study wherein 103 adult formalin fixed cadaveric lungs were procured during routine cadaveric dissection was conducted in the department of anatomy of our institute NSCB, Medical College Jabalpur, M.P. All the specimens were preserved in 10% formalin and were thoroughly studied to note every morphological detail of fissures present in the lungs. Results: The observations of the present study showed that there was presence of incomplete oblique fissure (Grade II & III) in 4 lungs (09.09%) on the right and in 10 lungs (16.95%) on the left side. Horizontal fissure was incomplete in 20 lungs (45.45%) of right side. Conclusion: Present study reveals that parenchymal fusion of various extents is a very common entity of oblique fissure of lung. So, more lung parenchyma has to be dissected to reach the bronchi and pulmonary arteries during partial lung resection which naturally might lead to perioperative hemorrhage and more postoperative complications. This knowledge of anatomy of fissures of lung may also help resolve perplexed radiographic findings.