Yeungnam Univ J Med.  2008 Jun;25(1):64-71.

Three Cases of Fever Unknown Origin with Lymphoproliferative Features and a Unique Pattern of 18-FDG Uptake on the Fusion PET/CT

Affiliations
  • 1Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea. cklee@med.yu.ac.kr

Abstract

Evaluation of a fever of unknown origin (FUO) is complex. Recently, PET scanning has been approved for screening in FUO evaluation. We treated three cases of FUO associated with increased FDG uptake in the bone marrow of the femur and tibia on the fusion PET/CT; all three had the same pattern of uptake. Bone marrow biopsies revealed mature lymphocyte and histiocyte infiltration and myxoid changes in one case, and cortical bone involvement in another case. The cases were all young females who had fever with neutropenia and relative lymphocytosis that lasted for several weeks and then remitted spontaneously. Even though the results of the studies were not diagnostic, the unique uptake pattern on PET/CT and the histology might be related to the cause of the illness and should be studied further to assess the association with classic FUO.

Keyword

FUO; Bone marrow lymphocytosis; PET

MeSH Terms

Biopsy
Bone Marrow
Female
Femur
Fever
Fever of Unknown Origin
Histiocytes
Humans
Lymphocytes
Lymphocytosis
Mass Screening
Neutropenia
Positron-Emission Tomography
Tibia
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