Inflammatory Pseudotumor of the Liver Diagnosed as Metastatic Liver Tumor in Patient with Islet Cell Tumor of the Pancreas

Hiromichi Kawaida, Jun Itakura, Hiroshi Kono, Tadashi Hyuga and Hideki Fujii

First Department of Surgery, University of Yamanashi, Faculty of Medicine

An asymptomatic 48-year-old woman diagnosed with pancreatic tumor detected in abdominal ultrasonography (US) and no abnormal laboratory test, findings was found in enhanced computed tomography (CT) to have a hypervascular mass in the body of the pancreas and late-phase enhanced masses at S4 and S8 of the liver. Arterial port graphy (CTAP) showed the liver mass to have a perfusion defect, arteriography (CTA) showed enhancement. Gadolinium ethoxybenzyl magnetic resonance imaging (Gd-EOB-MRI) showed early enhanced masses at S4 and S8 of the liver that did not show late-phase perfusion defects. Following distal pancreatectomy and partial liver resection, histological examination showed an islet cell tumor of the pancreas and a liver tumor consisting of proliferative fibrous tissue and infiltrative diffuse inflammatory cells definitively diagnosed as inflammatory pseudotumor of the liver.

Key words
islet cell tumor, inflammatory pseudotumor, Gd-EOB-MRI

Reprint requests
Hiromichi Kawaida First Department of Surgery, University of Yamanashi, Faculty of Medicine
1110 Simokatou, Chuo, 409-3898 JAPAN

Accepted
May 27, 2009

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