Clinical Implication and Ontological Basis of Bilobed Spleen: A Rare Case Report

Anatomical knowledge regarding the external morphology of the spleen is essential for surgical intervention and radiological diagnosis. A characteristic feature of the spleen is the presence of splenic notches at the superior border; however, such notches rarely extend deep enough to be considered fissures or to separate the spleen into multiple lobes. To date, there are very few cadaveric reports of complete splenic fissures. During a routine dissection class of the abdominal region, the spleen removed from the abdominal cavity exhibited a morphological variation in the form of a complete fissure. The spleen showed a complete notch extending as a fissure from the superior to the inferior border, dividing the spleen into two lobes. This study provides valuable information regarding the anatomy and prevalence of splenic fissures and bilobed spleens. A bilobed spleen is a rare congenital malformation that should be considered distinct from other known splenic anomalies. The presence of splenic fissures in bilobed spleens can serve as a guide for surgeons during conservative splenectomy procedures.