Abstract

Introduction: Liver is largest organ occupying the right hypochondrium, epigastrium and extending to left hypochondrium. Liver is wedge-shaped, it is concave inferiorly. Liver is divided into anatomical right and left lobes and quadrate lobe on inferior surface and caudate lobe on posterior surface. These two lobes are separated from each other by porta hepatis. Quadrate lobe is rectangular or triangular shape and is the segment IV of left lobe according to Couinaud classification. Pons hepatis means a segment of liver tissue connecting quadrate lobe with left lobe over fissure for ligamentum teres. Aim of the study was to observe morphological variations of quadrate lobe of liver in the cadaveric liver specimens. Materials and methods: A study was done for a period of 1 year by collecting 35 formalin fixed cadaveric liver specimens from the Department of Anatomy, Adichunchanagiri Institute of Medical Sciences, B G Nagara, Dist Mandya from July 2025 - June 2026. Results: Shape of the quadrate lobe was rectangular in 18, triangular in 9, square in 3, pear shape in 3 and irregular in 2 specimens. Quadrate lobe was absent in 2 specimens. Pons hepatis was observed in 5 specimens. There were 5 fissures seen, 4 transverse and 1 vertical. Conclusion: Anatomical knowledge of variations such as absence, fissures and pons hepatis of quadrate lobe are important in radiological diagnosis and surgical procedures in the vicinity.

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