Background : Inflammatory myofibroblastic tumors of the liver (IMLT) are benign neoplasm, but there were a few case reports because it was extremely rare. Due to their absolute rarity, pathological examination is the best method for differential diagnosis from other hepatic malignant tumors.

Methods : Herein, we present a case of a healthy 69-year-old women who presented with epigastric pain, mild fever. Laboratory findings was elevated CRP, alkaline phosphate and gamma-GTP. About 8cm sized arterial enhancing mass with delayed wash-out in left lateral segment of liver in CT and same findings with high signal intensity on T2 weighted image in MRI were reported. Also high FDG uptake of left lateral segment in the positron emission tomography-CT was reported. And the diagnosis of radiological and nuclear medicine was hepatocellular carcinoma or neuroendocrine tumor.

Results : We performed laparoscopic left lateral sectionectomy. Intraoperative finding was that the tumor size become smaller than previous radiological reports. Histological analysis diagnosed inflammatory myofibroblastic tumor of liver (hepatic inflammatory pseudotumor). The patient was relieved symptoms especially abdominal pain after operation.

Conclusions : Because IMLT are extremely rare and difficult to diagnose from other hepatic tumor, surgical resection should recommend for accurate diagnosis.