Morphological Variations Of The Structures At The Hilum Of Bilateral Lungs: A Cadeveric Study

Background: The hilum of both lung contains the pulmonary artery, pulmonary veins, main bronchus,bronchial arteries and and the arrangement of these structures differs between the right and left lungs. Aim of the present study was to study the morphological Variation of the Structures at the Hilum of Lungs.Objective. To Measure Vertical and Antero-posterior Length of Hilum of the Lungs. 2. To Study the Morphological Variation of Structure of the Hilum of Lung. 3.To Study the Relation and Arrangement of the Structure of the Hilum of Lung. 4.To Study the Bilateral Difference and Left and Right Lung. Methods:The present study involves 60 cadaveric lungs, comprising 30 right and 30 left lungs, to evaluate the morphometric and morphological variations of the pulmonary hilum. The vertical (V) and anteroposterior (AP) dimensions of the hilum will be measured using digital vernier calipers. In addition, morphological variations such as the number of hilar structures, including pulmonary arteries, pulmonary veins, and bronchi, along with their specific spatial arrangements, will be carefully documented. A comparative analysis will also be performed to identify bilateral differences between the left & right lungs.Conclusion:The lung hilum showed consistent side-based differences, with the right lung exhibiting a larger vertical and anteroposterior dimension. Several variations in bronchovascular arrangement, including accessory veins and altered bronchial branching, were also documented. These findings reaffirm that pulmonary hilar anatomy, though predictable, demonstrates notable individual variation.