A Case Of Retroperitoneal Fibrosis As A Confusing Reason Of Positive FDG/PET.

Retroperitoneal fibrosis is a rare disease and characterized by the presence of fibrous and inflammatory retroperitoneal tissue. Fluorine-18-fluorodeoxyglucose positron emission tomography (FDG/PET)is a beneficial methods for inflammatory dieseases. We presented here a case of 40 year old woman with idiopathic retroperitoenal fibrosis which detected high SUVmax level (21.4) on FDG/PET and had high erythrocyte sedimentatiton rate (140mm/h). If high SUVmax is detected, histologic confirmation is necessary to exclude malignancies.