Right Portal Fissure of a Patient with Metastatic Liver Cancer, detected by High-end Liver Analysis System: A Case Report

Abstract

No anatomical landmark exists for right portal fissure. We report a patient with a deep notch on the surface of the right hepatic lobe. To assess whether this notch was consistent with right portal fissure, we analyzed it using high-end 3-dimensional liver simulation software. A 72-year-old man seen for metachronous liver metastasis of sigmoid colon cancer was found in CT to have a low-density area, 3 cm in diameter in segment 7 of the liver, necessitating partial resection. A deep notch found during surgery on the surface of the right lobe, coincided with the border between the right paramedian and right lateral sectors. We conclude that this corresponded to a right portal fissure based on simulation software findings. With multidetector-row computed tomography data and high-end 3-dimensional liver simulation software, it is possible to identify a portal fissure accurately.