Resected Inflammatory Splenic Pseudotumor with High FDG–PET Uptake

Abstract

A 49–year–old man admitted for a splenic mass found in abdominal ultrasonography in an annual checkup was confirmed in abdominal contrast–enhanced computed tomography (CT) to have a solitary low–densityarea with a maximum 3.8 cm diameter at the splenic apex. In the absence of physical and serum biochemistry abnormalities, the man was monitored. Fourteen months later, CT scan growth to 4.4 cm. 18–fluorodeoxyglucose positron emission tomography (FDG–PET) showed high uptake in the same area. With a malignant tumor not able to be ruled out, we conducted open abdominal splenectomy. The histopathological diagnosis was inflammatory splenic pseudotumor.