Variation In Lobes And Fissures Of Lung

ABSTRACT

Introduction: Lungs are the paired vital organs meant for respiration situated in the thoracic cavity on either sideof the heart. The right lung is divided into supe-rior, middle & inferior lobes by oblique and horizontal fissure.While the left lung is divided into supe-rior & inferior lobes by an oblique fissure. The fissures permit distensionof the lobes during respiration. The fissures may be complete, incomplete or absent.Aim: To find out the variations in fissures and lobes along with their patterns, in human lungs; collected fromcadavers.Result: Out of 50 right lung specimen, the horizontal fissure was absent in two cases whereas the horizontalfissure was incompletely seen in 18 specimens. Incomplete oblique fissure was seen in 7 right sided lungs. Wereported accessory fissures and accessory lobes in 14 specimens. The oblique fissure was absent in 4 left lungsand it was incomplete in 14 lungs. Accessory fissures and lobes were present in 8 specimens.Conclusion: Knowledge of any variations is necessary in performing segmental resection and lobectomy. Accessoryfissures indicate persistence of prenatal fissures.